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<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="A way to create simple reusable template components in Django."><link href=https://django-components.github.io/django-components/latest/concepts/advanced/extensions/ rel=canonical><link href=../tag_formatters/ rel=prev><link href=../testing/ rel=next><link rel=icon href=../../../assets/images/favicon.png><meta name=generator content="mkdocs-1.6.1, mkdocs-material-9.6.19"><title>Extensions - Django-Components</title><link rel=stylesheet href=../../../assets/stylesheets/main.7e37652d.min.css><link rel=stylesheet href=../../../assets/stylesheets/palette.06af60db.min.css><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet 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</style> <main class=md-main data-md-component=main> <div class="md-main__inner md-grid"> <div class="md-sidebar md-sidebar--primary" data-md-component=sidebar data-md-type=navigation> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--primary md-nav--lifted" aria-label=Navigation data-md-level=0> <label class=md-nav__title for=__drawer> <a href=../../.. title=Django-Components class="md-nav__button md-logo" aria-label=Django-Components data-md-component=logo> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3 3 3 0 0 0 3 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54"/></svg> </a> Django-Components </label> <div class=md-nav__source> <a href=https://github.com/django-components/django-components title="Go to repository" class=md-source data-md-component=source> <div class="md-source__icon md-icon"> <svg 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<!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_1> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_1 id=__nav_1_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Overview <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_1_label aria-expanded=false> <label class=md-nav__title for=__nav_1> <span class="md-nav__icon md-icon"></span> Overview </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../overview/welcome/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Welcome to Django Components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../overview/compatibility/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Compatibility <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../overview/security_notes/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Security notes 🚨 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../overview/performance/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Performance <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../overview/license/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> License <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_2> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_2 id=__nav_2_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Getting Started <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_2_label aria-expanded=false> <label class=md-nav__title for=__nav_2> <span class="md-nav__icon md-icon"></span> Getting Started </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../getting_started/installation/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Installation <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../getting_started/your_first_component/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Create your first component <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../getting_started/adding_js_and_css/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Adding JS and CSS <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../getting_started/components_in_templates/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Components in templates <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../getting_started/parametrising_components/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Parametrising components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../getting_started/adding_slots/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Adding slots <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../getting_started/rendering_components/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Rendering components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--active md-nav__item--section md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_3 checked> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_3 id=__nav_3_label tabindex> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Documentation:<br>Concepts <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_3_label aria-expanded=true> <label class=md-nav__title for=__nav_3> <span class="md-nav__icon md-icon"></span> Documentation: Concepts </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--section md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_3_1> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_3_1 id=__nav_3_1_label tabindex> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Fundamentals <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_3_1_label aria-expanded=false> <label class=md-nav__title for=__nav_3_1> <span class="md-nav__icon md-icon"></span> Fundamentals </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/single_file_components/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Single-file components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/html_js_css_files/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> HTML / JS / CSS files <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/html_js_css_variables/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> HTML / JS / CSS variables <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/secondary_js_css_files/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Secondary JS / CSS files <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/component_defaults/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Component defaults <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/render_api/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Render API <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/rendering_components/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Rendering components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/slots/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Slots <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/template_tag_syntax/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Template tag syntax <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/html_attributes/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> HTML attributes <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/component_views_urls/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Component views and URLs <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/http_request/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> HTTP Request <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/typing_and_validation/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Typing and validation <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/subclassing_components/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Subclassing components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../fundamentals/autodiscovery/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Autodiscovery <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--active md-nav__item--section md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle " type=checkbox id=__nav_3_2 checked> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_3_2 id=__nav_3_2_label tabindex> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Advanced <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_3_2_label aria-expanded=true> <label class=md-nav__title for=__nav_3_2> <span class="md-nav__icon md-icon"></span> Advanced </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../rendering_js_css/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Rendering JS / CSS <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../html_fragments/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> HTML fragments <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../provide_inject/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Prop drilling and provide / inject <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../hooks/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Lifecycle hooks <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../component_registry/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Registering components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../component_caching/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Component caching <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../component_context_scope/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Component context and scope <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../template_tags/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Custom template tags <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../tag_formatters/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Tag formatters <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class="md-nav__item md-nav__item--active"> <!-- State toggle --> <input class="md-nav__toggle md-toggle" type=checkbox id=__toc> <!-- Hack: see partials/toc.html for more information --> <!-- Navigation link to table of contents --> <label class="md-nav__link md-nav__link--active" for=__toc> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Extensions <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <a href=./ class="md-nav__link md-nav__link--active"> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Extensions <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> <!-- Table of contents --> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#live-examples class=md-nav__link> <span class=md-ellipsis> Live examples </span> </a> </li> <li class=md-nav__item> <a href=#install-extensions class=md-nav__link> <span class=md-ellipsis> Install extensions </span> </a> </li> <li class=md-nav__item> <a href=#lifecycle-hooks class=md-nav__link> <span class=md-ellipsis> Lifecycle hooks </span> </a> </li> <li class=md-nav__item> <a href=#per-component-configuration class=md-nav__link> <span class=md-ellipsis> Per-component configuration </span> </a> <nav class=md-nav aria-label="Per-component configuration"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#example-component-as-view class=md-nav__link> <span class=md-ellipsis> Example: Component as View </span> </a> </li> <li class=md-nav__item> <a href=#example-storybook-integration class=md-nav__link> <span class=md-ellipsis> Example: Storybook integration </span> </a> </li> <li class=md-nav__item> <a href=#extension-defaults class=md-nav__link> <span class=md-ellipsis> Extension defaults </span> </a> </li> <li class=md-nav__item> <a href=#extensions-in-component-instances class=md-nav__link> <span class=md-ellipsis> Extensions in component instances </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#writing-extensions class=md-nav__link> <span class=md-ellipsis> Writing extensions </span> </a> <nav class=md-nav aria-label="Writing extensions"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#extension-class class=md-nav__link> <span class=md-ellipsis> Extension class </span> </a> </li> <li class=md-nav__item> <a href=#component-config class=md-nav__link> <span class=md-ellipsis> Component config </span> </a> </li> <li class=md-nav__item> <a href=#install-your-extension class=md-nav__link> <span class=md-ellipsis> Install your extension </span> </a> </li> <li class=md-nav__item> <a href=#full-example-custom-logging-extension class=md-nav__link> <span class=md-ellipsis> Full example: Custom logging extension </span> </a> </li> <li class=md-nav__item> <a href=#utility-functions class=md-nav__link> <span class=md-ellipsis> Utility functions </span> </a> </li> <li class=md-nav__item> <a href=#access-component-class class=md-nav__link> <span class=md-ellipsis> Access component class </span> </a> </li> <li class=md-nav__item> <a href=#pass-slot-metadata class=md-nav__link> <span class=md-ellipsis> Pass slot metadata </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#extension-commands class=md-nav__link> <span class=md-ellipsis> Extension commands </span> </a> <nav class=md-nav aria-label="Extension commands"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#define-commands class=md-nav__link> <span class=md-ellipsis> Define commands </span> </a> </li> <li class=md-nav__item> <a href=#define-arguments-and-options class=md-nav__link> <span class=md-ellipsis> Define arguments and options </span> </a> </li> <li class=md-nav__item> <a href=#argument-groups class=md-nav__link> <span class=md-ellipsis> Argument groups </span> </a> </li> <li class=md-nav__item> <a href=#subcommands class=md-nav__link> <span class=md-ellipsis> Subcommands </span> </a> </li> <li class=md-nav__item> <a href=#help-message class=md-nav__link> <span class=md-ellipsis> Help message </span> </a> </li> <li class=md-nav__item> <a href=#testing-commands class=md-nav__link> <span class=md-ellipsis> Testing commands </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#extension-urls class=md-nav__link> <span class=md-ellipsis> Extension URLs </span> </a> <nav class=md-nav aria-label="Extension URLs"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#url-paths class=md-nav__link> <span class=md-ellipsis> URL paths </span> </a> </li> <li class=md-nav__item> <a href=#nested-urls class=md-nav__link> <span class=md-ellipsis> Nested URLs </span> </a> </li> <li class=md-nav__item> <a href=#extra-url-data class=md-nav__link> <span class=md-ellipsis> Extra URL data </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> <!-- Navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../testing/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Testing <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../component_libraries/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Component libraries <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_4> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_4 id=__nav_4_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Documentation:<br>API Reference <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_4_label aria-expanded=false> <label class=md-nav__title for=__nav_4> <span class="md-nav__icon md-icon"></span> Documentation: API Reference </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/api/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> API <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/commands/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> CLI commands <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/components/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Components <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/exceptions/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Exceptions <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/extension_hooks/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Extension hooks <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/extension_commands/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Extension commands API <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/extension_urls/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Extension URLs API <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/settings/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Settings <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/signals/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Signals <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/tag_formatters/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Tag formatters <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/template_tags/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Template tags <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/template_variables/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Template variables <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/urls/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> URLs <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../reference/testing_api/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Testing API <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_5> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_5 id=__nav_5_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Documentation:<br>Guides <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_5_label aria-expanded=false> <label class=md-nav__title for=__nav_5> <span class="md-nav__icon md-icon"></span> Documentation: Guides </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_5_1> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_5_1 id=__nav_5_1_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Setup <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_5_1_label aria-expanded=false> <label class=md-nav__title for=__nav_5_1> <span class="md-nav__icon md-icon"></span> Setup </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../guides/setup/caching/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Caching <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../guides/setup/development_server/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Development server <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_5_2> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_5_2 id=__nav_5_2_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Other <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_5_2_label aria-expanded=false> <label class=md-nav__title for=__nav_5_2> <span class="md-nav__icon md-icon"></span> Other </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../guides/other/troubleshooting/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Troubleshooting <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_6> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_6 id=__nav_6_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Documentation:<br>Upgrading <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_6_label aria-expanded=false> <label class=md-nav__title for=__nav_6> <span class="md-nav__icon md-icon"></span> Documentation: Upgrading </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../upgrading/v0/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Upgrading in pre-v1.0 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_7> <!-- Toggle to expand nested items --> <div class="md-nav__link md-nav__container"> <a href=../../../plugins/ class="md-nav__link "> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Plugins <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> <!-- Only render toggle if there's at least one more page --> </div> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_7_label aria-expanded=false> <label class=md-nav__title for=__nav_7> <span class="md-nav__icon md-icon"></span> Plugins </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_8> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_8 id=__nav_8_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Examples <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_8_label aria-expanded=false> <label class=md-nav__title for=__nav_8> <span class="md-nav__icon md-icon"></span> Examples </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../examples/overview/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Examples <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_9> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_9 id=__nav_9_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Community <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_9_label aria-expanded=false> <label class=md-nav__title for=__nav_9> <span class="md-nav__icon md-icon"></span> Community </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../community/help/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Questions & Help <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../community/contributing/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Contributing <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../community/development/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Development <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../community/code_of_conduct/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Code of Conduct <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_9_5> <!-- Toggle to expand nested items --> <label class=md-nav__link for=__nav_9_5 id=__nav_9_5_label tabindex=0> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Dev Guides <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> <span class="md-nav__icon md-icon"></span> </label> <!-- Toggle to expand nested items with link to index page --> <!-- Nested navigation --> <nav class=md-nav data-md-level=2 aria-labelledby=__nav_9_5_label aria-expanded=false> <label class=md-nav__title for=__nav_9_5> <span class="md-nav__icon md-icon"></span> Dev Guides </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../community/devguides/dependency_mgmt/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> JS and CSS rendering <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../community/devguides/slot_rendering/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Slot rendering <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../community/devguides/slots_and_blocks/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Using slot and block tags <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <!-- Determine all nested items that are index pages --> <!-- Navigation tabs --> <!-- Render 1st level active item as section --> <!-- Navigation tabs + sections --> <!-- Render 2nd level items with nested items as sections --> <!-- Navigation sections --> <!-- Navigation pruning --> <!-- Nested navigation item --> <li class="md-nav__item md-nav__item--nested"> <!-- Determine checked and indeterminate state --> <!-- Active checkbox expands items contained within nested section --> <input class="md-nav__toggle md-toggle md-toggle--indeterminate" type=checkbox id=__nav_10> <!-- Toggle to expand nested items --> <div class="md-nav__link md-nav__container"> <a href=../../../releases/ class="md-nav__link "> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> Release Notes <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> <!-- Only render toggle if there's at least one more page --> <label class="md-nav__link " for=__nav_10 id=__nav_10_label tabindex=0> <span class="md-nav__icon md-icon"></span> </label> </div> <!-- Nested navigation --> <nav class=md-nav data-md-level=1 aria-labelledby=__nav_10_label aria-expanded=false> <label class=md-nav__title for=__nav_10> <span class="md-nav__icon md-icon"></span> Release Notes </label> <ul class=md-nav__list data-md-scrollfix> <!-- Nested navigation item --> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.141.5/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.141.5 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.141.4/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.141.4 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.141.3/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.141.3 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.141.2/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.141.2 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.141.1/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.141.1 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.141.0/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.141.0 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.140.1/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.140.1 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.140.0/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.140.0 🚨📢 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.139.1/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.139.1 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.139.0/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.139.0 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.138/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.138 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.137/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.137 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.136/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.136 🚨📢 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.135/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.135 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.134/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.134 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.133/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.133 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.132/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.132 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.131/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.131 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.130/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.130 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.129/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.129 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.128/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.128 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.127/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.127 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.126/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.126 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.125/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.125 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.124/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.124 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.123/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.123 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.122/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.122 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.121/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.121 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.120/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.120 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.119/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.119 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.118/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.118 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.117/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.117 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.116/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.116 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.115/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.115 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.114/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.114 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.113/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.113 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.112/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.112 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.111/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.111 <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.110/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.110 🚨📢 (2024-11-25) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.100/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.100 🚨📢 (2024-09-11) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.97/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.97 (2024-09-06) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.96/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.96 (2024-09-04) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.95/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.95 (2024-08-29) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.94/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.94 (2024-08-28) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.93/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.93 (2024-08-27) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.92/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.92 🚨📢 (2024-08-22) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.90/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.90 (2024-08-18) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.85/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.85 🚨📢 (2024-07-29) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.81/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.81 🚨📢 (2024-06-12) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.80/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.80 (2024-06-01) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.79/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.79 🚨📢 (2024-06-01) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.77/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.77 🚨📢 (2024-05-23) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.74/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.74 (2024-05-12) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.70/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.70 🚨📢 (2024-05-01) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.67/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.67 (2024-04-17) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.50/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.50 🚨📢 (2024-02-26) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.34/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.34 (2024-01-27) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.28/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.28 (2023-05-18) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.27/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.27 (2023-04-11) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.26/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.26 🚨📢 (2023-03-14) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.22/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.22 (2022-07-26) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> <!-- Determine classes --> <!-- Determine active page for paginated views --> <!-- Navigation item with nested items --> <li class=md-nav__item> <a href=../../../releases/v0.17/ class=md-nav__link> <!-- Navigation link icon --> <!-- ==================== OUR CHANGES START ==================== --> <!-- ==================== OUR CHANGES END ==================== --> <!-- Navigation link title --> <span class=md-ellipsis> v0.17 (2021-09-10) <!-- Navigation link subtitle --> </span> <!-- Navigation link status --> </a> </li> </ul> </nav> <!-- Pruned navigation item --> </li> <!-- Currently active page --> </ul> </nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=sidebar data-md-type=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#live-examples class=md-nav__link> <span class=md-ellipsis> Live examples </span> </a> </li> <li class=md-nav__item> <a href=#install-extensions class=md-nav__link> <span class=md-ellipsis> Install extensions </span> </a> </li> <li class=md-nav__item> <a href=#lifecycle-hooks class=md-nav__link> <span class=md-ellipsis> Lifecycle hooks </span> </a> </li> <li class=md-nav__item> <a href=#per-component-configuration class=md-nav__link> <span class=md-ellipsis> Per-component configuration </span> </a> <nav class=md-nav aria-label="Per-component configuration"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#example-component-as-view class=md-nav__link> <span class=md-ellipsis> Example: Component as View </span> </a> </li> <li class=md-nav__item> <a href=#example-storybook-integration class=md-nav__link> <span class=md-ellipsis> Example: Storybook integration </span> </a> </li> <li class=md-nav__item> <a href=#extension-defaults class=md-nav__link> <span class=md-ellipsis> Extension defaults </span> </a> </li> <li class=md-nav__item> <a href=#extensions-in-component-instances class=md-nav__link> <span class=md-ellipsis> Extensions in component instances </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#writing-extensions class=md-nav__link> <span class=md-ellipsis> Writing extensions </span> </a> <nav class=md-nav aria-label="Writing extensions"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#extension-class class=md-nav__link> <span class=md-ellipsis> Extension class </span> </a> </li> <li class=md-nav__item> <a href=#component-config class=md-nav__link> <span class=md-ellipsis> Component config </span> </a> </li> <li class=md-nav__item> <a href=#install-your-extension class=md-nav__link> <span class=md-ellipsis> Install your extension </span> </a> </li> <li class=md-nav__item> <a href=#full-example-custom-logging-extension class=md-nav__link> <span class=md-ellipsis> Full example: Custom logging extension </span> </a> </li> <li class=md-nav__item> <a href=#utility-functions class=md-nav__link> <span class=md-ellipsis> Utility functions </span> </a> </li> <li class=md-nav__item> <a href=#access-component-class class=md-nav__link> <span class=md-ellipsis> Access component class </span> </a> </li> <li class=md-nav__item> <a href=#pass-slot-metadata class=md-nav__link> <span class=md-ellipsis> Pass slot metadata </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#extension-commands class=md-nav__link> <span class=md-ellipsis> Extension commands </span> </a> <nav class=md-nav aria-label="Extension commands"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#define-commands class=md-nav__link> <span class=md-ellipsis> Define commands </span> </a> </li> <li class=md-nav__item> <a href=#define-arguments-and-options class=md-nav__link> <span class=md-ellipsis> Define arguments and options </span> </a> </li> <li class=md-nav__item> <a href=#argument-groups class=md-nav__link> <span class=md-ellipsis> Argument groups </span> </a> </li> <li class=md-nav__item> <a href=#subcommands class=md-nav__link> <span class=md-ellipsis> Subcommands </span> </a> </li> <li class=md-nav__item> <a href=#help-message class=md-nav__link> <span class=md-ellipsis> Help message </span> </a> </li> <li class=md-nav__item> <a href=#testing-commands class=md-nav__link> <span class=md-ellipsis> Testing commands </span> </a> </li> </ul> </nav> </li> <li class=md-nav__item> <a href=#extension-urls class=md-nav__link> <span class=md-ellipsis> Extension URLs </span> </a> <nav class=md-nav aria-label="Extension URLs"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#url-paths class=md-nav__link> <span class=md-ellipsis> URL paths </span> </a> </li> <li class=md-nav__item> <a href=#nested-urls class=md-nav__link> <span class=md-ellipsis> Nested URLs </span> </a> </li> <li class=md-nav__item> <a href=#extra-url-data class=md-nav__link> <span class=md-ellipsis> Extra URL data </span> </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class=md-content data-md-component=content> <article class="md-content__inner md-typeset"> <a href=https://github.com/django-components/django-components/edit/master/docs/concepts/advanced/extensions.md title="Edit this page" class="md-content__button md-icon" rel=edit> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M10 20H6V4h7v5h5v3.1l2-2V8l-6-6H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h4zm10.2-7c.1 0 .3.1.4.2l1.3 1.3c.2.2.2.6 0 .8l-1 1-2.1-2.1 1-1c.1-.1.2-.2.4-.2m0 3.9L14.1 23H12v-2.1l6.1-6.1z"/></svg> </a> <a href=https://github.com/django-components/django-components/raw/master/docs/concepts/advanced/extensions.md title="View source of this page" class="md-content__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M17 18c.56 0 1 .44 1 1s-.44 1-1 1-1-.44-1-1 .44-1 1-1m0-3c-2.73 0-5.06 1.66-6 4 .94 2.34 3.27 4 6 4s5.06-1.66 6-4c-.94-2.34-3.27-4-6-4m0 6.5a2.5 2.5 0 0 1-2.5-2.5 2.5 2.5 0 0 1 2.5-2.5 2.5 2.5 0 0 1 2.5 2.5 2.5 2.5 0 0 1-2.5 2.5M9.27 20H6V4h7v5h5v4.07c.7.08 1.36.25 2 .49V8l-6-6H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h4.5a8.2 8.2 0 0 1-1.23-2"/></svg> </a> <h1>Extensions</h1> <p><em>New in version 0.131</em></p> <p>Django-components functionality can be extended with "extensions". Extensions allow for powerful customization and integrations. They can:</p> <ul> <li>Tap into lifecycle events, such as when a component is created, deleted, registered, or unregistered.</li> <li>Add new attributes and methods to the components under an extension-specific nested class.</li> <li>Define custom commands that can be executed via the Django management command interface.</li> </ul> <h2 id=live-examples>Live examples<a class=headerlink href=#live-examples title="Permanent link">¤</a></h2> <ul> <li><a href=https://github.com/django-components/djc-ext-pydantic>djc-ext-pydantic</a></li> </ul> <h2 id=install-extensions>Install extensions<a class=headerlink href=#install-extensions title="Permanent link">¤</a></h2> <p>Extensions are configured in the Django settings under <a href=../../../reference/settings#django_components.app_settings.ComponentsSettings.extensions><code>COMPONENTS.extensions</code></a>.</p> <p>Extensions can be set by either as an import string or by passing in a class:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-0-1 name=__codelineno-0-1 href=#__codelineno-0-1></a><span class=c1># settings.py</span>
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<a id=__codelineno-0-2 name=__codelineno-0-2 href=#__codelineno-0-2></a>
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<a id=__codelineno-0-3 name=__codelineno-0-3 href=#__codelineno-0-3></a><span class=k>class</span><span class=w> </span><span class=nc>MyExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
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<a id=__codelineno-0-4 name=__codelineno-0-4 href=#__codelineno-0-4></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"my_extension"</span>
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<a id=__codelineno-0-5 name=__codelineno-0-5 href=#__codelineno-0-5></a>
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<a id=__codelineno-0-6 name=__codelineno-0-6 href=#__codelineno-0-6></a> <span class=k>class</span><span class=w> </span><span class=nc>ComponentConfig</span><span class=p>(</span><span class=n>ExtensionComponentConfig</span><span class=p>):</span>
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<a id=__codelineno-0-7 name=__codelineno-0-7 href=#__codelineno-0-7></a> <span class=o>...</span>
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<a id=__codelineno-0-8 name=__codelineno-0-8 href=#__codelineno-0-8></a>
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<a id=__codelineno-0-9 name=__codelineno-0-9 href=#__codelineno-0-9></a><span class=n>COMPONENTS</span> <span class=o>=</span> <span class=n>ComponentsSettings</span><span class=p>(</span>
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<a id=__codelineno-0-10 name=__codelineno-0-10 href=#__codelineno-0-10></a> <span class=n>extensions</span><span class=o>=</span><span class=p>[</span>
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<a id=__codelineno-0-11 name=__codelineno-0-11 href=#__codelineno-0-11></a> <span class=n>MyExtension</span><span class=p>,</span>
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<a id=__codelineno-0-12 name=__codelineno-0-12 href=#__codelineno-0-12></a> <span class=s2>"another_app.extensions.AnotherExtension"</span><span class=p>,</span>
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<a id=__codelineno-0-13 name=__codelineno-0-13 href=#__codelineno-0-13></a> <span class=s2>"my_app.extensions.ThirdExtension"</span><span class=p>,</span>
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<a id=__codelineno-0-14 name=__codelineno-0-14 href=#__codelineno-0-14></a> <span class=p>],</span>
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<a id=__codelineno-0-15 name=__codelineno-0-15 href=#__codelineno-0-15></a><span class=p>)</span>
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</code></pre></div> <h2 id=lifecycle-hooks>Lifecycle hooks<a class=headerlink href=#lifecycle-hooks title="Permanent link">¤</a></h2> <p>Extensions can define methods to hook into lifecycle events, such as:</p> <ul> <li>Component creation or deletion</li> <li>Un/registering a component</li> <li>Creating or deleting a registry</li> <li>Pre-processing data passed to a component on render</li> <li>Post-processing data returned from <a href=../../../reference/api#django_components.Component.get_template_data><code>get_template_data()</code></a> and others.</li> </ul> <p>See the full list in <a href=../../../reference/extension_hooks>Extension Hooks Reference</a>.</p> <h2 id=per-component-configuration>Per-component configuration<a class=headerlink href=#per-component-configuration title="Permanent link">¤</a></h2> <p>Each extension has a corresponding nested class within the <a href=../../../reference/api#django_components.Component><code>Component</code></a> class. These allow to configure the extensions on a per-component basis.</p> <p>E.g.:</p> <ul> <li><code>"view"</code> extension -> <a href=../../../reference/api#django_components.Component.View><code>Component.View</code></a></li> <li><code>"cache"</code> extension -> <a href=../../../reference/api#django_components.Component.Cache><code>Component.Cache</code></a></li> <li><code>"defaults"</code> extension -> <a href=../../../reference/api#django_components.Component.Defaults><code>Component.Defaults</code></a></li> </ul> <div class="admonition note"> <p class=admonition-title>Note</p> <p><strong>Accessing the component instance from inside the nested classes:</strong></p> <p>Each method of the nested classes has access to the <code>component</code> attribute, which points to the component instance.</p> <div class=highlight><pre><span></span><code><a id=__codelineno-1-1 name=__codelineno-1-1 href=#__codelineno-1-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
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<a id=__codelineno-1-2 name=__codelineno-1-2 href=#__codelineno-1-2></a> <span class=k>class</span><span class=w> </span><span class=nc>MyExtension</span><span class=p>:</span>
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<a id=__codelineno-1-3 name=__codelineno-1-3 href=#__codelineno-1-3></a> <span class=k>def</span><span class=w> </span><span class=nf>get</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>request</span><span class=p>):</span>
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<a id=__codelineno-1-4 name=__codelineno-1-4 href=#__codelineno-1-4></a> <span class=c1># `self.component` points to the instance of `MyTable` Component.</span>
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<a id=__codelineno-1-5 name=__codelineno-1-5 href=#__codelineno-1-5></a> <span class=k>return</span> <span class=bp>self</span><span class=o>.</span><span class=n>component</span><span class=o>.</span><span class=n>render_to_response</span><span class=p>(</span><span class=n>request</span><span class=o>=</span><span class=n>request</span><span class=p>)</span>
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</code></pre></div> </div> <h3 id=example-component-as-view>Example: Component as View<a class=headerlink href=#example-component-as-view title="Permanent link">¤</a></h3> <p>The <a href=../../fundamentals/component_views_urls>Components as Views</a> feature is actually implemented as an extension that is configured by a <code>View</code> nested class.</p> <p>You can override the <code>get()</code>, <code>post()</code>, etc methods to customize the behavior of the component as a view:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-2-1 name=__codelineno-2-1 href=#__codelineno-2-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
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<a id=__codelineno-2-2 name=__codelineno-2-2 href=#__codelineno-2-2></a> <span class=k>class</span><span class=w> </span><span class=nc>View</span><span class=p>:</span>
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<a id=__codelineno-2-3 name=__codelineno-2-3 href=#__codelineno-2-3></a> <span class=k>def</span><span class=w> </span><span class=nf>get</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>request</span><span class=p>):</span>
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<a id=__codelineno-2-4 name=__codelineno-2-4 href=#__codelineno-2-4></a> <span class=k>return</span> <span class=bp>self</span><span class=o>.</span><span class=n>component_class</span><span class=o>.</span><span class=n>render_to_response</span><span class=p>(</span><span class=n>request</span><span class=o>=</span><span class=n>request</span><span class=p>)</span>
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<a id=__codelineno-2-5 name=__codelineno-2-5 href=#__codelineno-2-5></a>
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<a id=__codelineno-2-6 name=__codelineno-2-6 href=#__codelineno-2-6></a> <span class=k>def</span><span class=w> </span><span class=nf>post</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>request</span><span class=p>):</span>
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<a id=__codelineno-2-7 name=__codelineno-2-7 href=#__codelineno-2-7></a> <span class=k>return</span> <span class=bp>self</span><span class=o>.</span><span class=n>component_class</span><span class=o>.</span><span class=n>render_to_response</span><span class=p>(</span><span class=n>request</span><span class=o>=</span><span class=n>request</span><span class=p>)</span>
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<a id=__codelineno-2-8 name=__codelineno-2-8 href=#__codelineno-2-8></a>
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<a id=__codelineno-2-9 name=__codelineno-2-9 href=#__codelineno-2-9></a> <span class=o>...</span>
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</code></pre></div> <!-- TODO - LINK TO IT ONCE RELEASED --> <h3 id=example-storybook-integration>Example: Storybook integration<a class=headerlink href=#example-storybook-integration title="Permanent link">¤</a></h3> <p>The Storybook integration (work in progress) is an extension that is configured by a <code>Storybook</code> nested class.</p> <p>You can override methods such as <code>title</code>, <code>parameters</code>, etc, to customize how to generate a Storybook JSON file from the component.</p> <div class=highlight><pre><span></span><code><a id=__codelineno-3-1 name=__codelineno-3-1 href=#__codelineno-3-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
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<a id=__codelineno-3-2 name=__codelineno-3-2 href=#__codelineno-3-2></a> <span class=k>class</span><span class=w> </span><span class=nc>Storybook</span><span class=p>:</span>
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<a id=__codelineno-3-3 name=__codelineno-3-3 href=#__codelineno-3-3></a> <span class=k>def</span><span class=w> </span><span class=nf>title</span><span class=p>(</span><span class=bp>self</span><span class=p>):</span>
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<a id=__codelineno-3-4 name=__codelineno-3-4 href=#__codelineno-3-4></a> <span class=k>return</span> <span class=bp>self</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=vm>__name__</span>
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<a id=__codelineno-3-5 name=__codelineno-3-5 href=#__codelineno-3-5></a>
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<a id=__codelineno-3-6 name=__codelineno-3-6 href=#__codelineno-3-6></a> <span class=k>def</span><span class=w> </span><span class=nf>parameters</span><span class=p>(</span><span class=bp>self</span><span class=p>)</span> <span class=o>-></span> <span class=n>Parameters</span><span class=p>:</span>
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<a id=__codelineno-3-7 name=__codelineno-3-7 href=#__codelineno-3-7></a> <span class=k>return</span> <span class=p>{</span>
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<a id=__codelineno-3-8 name=__codelineno-3-8 href=#__codelineno-3-8></a> <span class=s2>"server"</span><span class=p>:</span> <span class=p>{</span>
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<a id=__codelineno-3-9 name=__codelineno-3-9 href=#__codelineno-3-9></a> <span class=s2>"id"</span><span class=p>:</span> <span class=bp>self</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=vm>__name__</span><span class=p>,</span>
|
|
<a id=__codelineno-3-10 name=__codelineno-3-10 href=#__codelineno-3-10></a> <span class=p>}</span>
|
|
<a id=__codelineno-3-11 name=__codelineno-3-11 href=#__codelineno-3-11></a> <span class=p>}</span>
|
|
<a id=__codelineno-3-12 name=__codelineno-3-12 href=#__codelineno-3-12></a>
|
|
<a id=__codelineno-3-13 name=__codelineno-3-13 href=#__codelineno-3-13></a> <span class=k>def</span><span class=w> </span><span class=nf>stories</span><span class=p>(</span><span class=bp>self</span><span class=p>)</span> <span class=o>-></span> <span class=n>List</span><span class=p>[</span><span class=n>StoryAnnotations</span><span class=p>]:</span>
|
|
<a id=__codelineno-3-14 name=__codelineno-3-14 href=#__codelineno-3-14></a> <span class=k>return</span> <span class=p>[]</span>
|
|
<a id=__codelineno-3-15 name=__codelineno-3-15 href=#__codelineno-3-15></a>
|
|
<a id=__codelineno-3-16 name=__codelineno-3-16 href=#__codelineno-3-16></a> <span class=o>...</span>
|
|
</code></pre></div> <h3 id=extension-defaults>Extension defaults<a class=headerlink href=#extension-defaults title="Permanent link">¤</a></h3> <p>Extensions are incredibly flexible, but configuring the same extension for every component can be a pain.</p> <p>For this reason, django-components allows for extension defaults. This is like setting the extension config for every component.</p> <p>To set extension defaults, use the <a href=../../../reference/settings#django_components.app_settings.ComponentsSettings.extensions_defaults><code>COMPONENTS.extensions_defaults</code></a> setting.</p> <p>The <code>extensions_defaults</code> setting is a dictionary where the key is the extension name and the value is a dictionary of config attributes:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-4-1 name=__codelineno-4-1 href=#__codelineno-4-1></a><span class=n>COMPONENTS</span> <span class=o>=</span> <span class=n>ComponentsSettings</span><span class=p>(</span>
|
|
<a id=__codelineno-4-2 name=__codelineno-4-2 href=#__codelineno-4-2></a> <span class=n>extensions</span><span class=o>=</span><span class=p>[</span>
|
|
<a id=__codelineno-4-3 name=__codelineno-4-3 href=#__codelineno-4-3></a> <span class=s2>"my_extension.MyExtension"</span><span class=p>,</span>
|
|
<a id=__codelineno-4-4 name=__codelineno-4-4 href=#__codelineno-4-4></a> <span class=s2>"storybook.StorybookExtension"</span><span class=p>,</span>
|
|
<a id=__codelineno-4-5 name=__codelineno-4-5 href=#__codelineno-4-5></a> <span class=p>],</span>
|
|
<a id=__codelineno-4-6 name=__codelineno-4-6 href=#__codelineno-4-6></a> <span class=n>extensions_defaults</span><span class=o>=</span><span class=p>{</span>
|
|
<a id=__codelineno-4-7 name=__codelineno-4-7 href=#__codelineno-4-7></a> <span class=s2>"my_extension"</span><span class=p>:</span> <span class=p>{</span>
|
|
<a id=__codelineno-4-8 name=__codelineno-4-8 href=#__codelineno-4-8></a> <span class=s2>"key"</span><span class=p>:</span> <span class=s2>"value"</span><span class=p>,</span>
|
|
<a id=__codelineno-4-9 name=__codelineno-4-9 href=#__codelineno-4-9></a> <span class=p>},</span>
|
|
<a id=__codelineno-4-10 name=__codelineno-4-10 href=#__codelineno-4-10></a> <span class=s2>"view"</span><span class=p>:</span> <span class=p>{</span>
|
|
<a id=__codelineno-4-11 name=__codelineno-4-11 href=#__codelineno-4-11></a> <span class=s2>"public"</span><span class=p>:</span> <span class=kc>True</span><span class=p>,</span>
|
|
<a id=__codelineno-4-12 name=__codelineno-4-12 href=#__codelineno-4-12></a> <span class=p>},</span>
|
|
<a id=__codelineno-4-13 name=__codelineno-4-13 href=#__codelineno-4-13></a> <span class=s2>"cache"</span><span class=p>:</span> <span class=p>{</span>
|
|
<a id=__codelineno-4-14 name=__codelineno-4-14 href=#__codelineno-4-14></a> <span class=s2>"ttl"</span><span class=p>:</span> <span class=mi>60</span><span class=p>,</span>
|
|
<a id=__codelineno-4-15 name=__codelineno-4-15 href=#__codelineno-4-15></a> <span class=p>},</span>
|
|
<a id=__codelineno-4-16 name=__codelineno-4-16 href=#__codelineno-4-16></a> <span class=s2>"storybook"</span><span class=p>:</span> <span class=p>{</span>
|
|
<a id=__codelineno-4-17 name=__codelineno-4-17 href=#__codelineno-4-17></a> <span class=s2>"title"</span><span class=p>:</span> <span class=k>lambda</span> <span class=bp>self</span><span class=p>:</span> <span class=bp>self</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=vm>__name__</span><span class=p>,</span>
|
|
<a id=__codelineno-4-18 name=__codelineno-4-18 href=#__codelineno-4-18></a> <span class=p>},</span>
|
|
<a id=__codelineno-4-19 name=__codelineno-4-19 href=#__codelineno-4-19></a> <span class=p>},</span>
|
|
<a id=__codelineno-4-20 name=__codelineno-4-20 href=#__codelineno-4-20></a><span class=p>)</span>
|
|
</code></pre></div> <p>Which is equivalent to setting the following for every component:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-5-1 name=__codelineno-5-1 href=#__codelineno-5-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-5-2 name=__codelineno-5-2 href=#__codelineno-5-2></a> <span class=k>class</span><span class=w> </span><span class=nc>MyExtension</span><span class=p>:</span>
|
|
<a id=__codelineno-5-3 name=__codelineno-5-3 href=#__codelineno-5-3></a> <span class=n>key</span> <span class=o>=</span> <span class=s2>"value"</span>
|
|
<a id=__codelineno-5-4 name=__codelineno-5-4 href=#__codelineno-5-4></a>
|
|
<a id=__codelineno-5-5 name=__codelineno-5-5 href=#__codelineno-5-5></a> <span class=k>class</span><span class=w> </span><span class=nc>View</span><span class=p>:</span>
|
|
<a id=__codelineno-5-6 name=__codelineno-5-6 href=#__codelineno-5-6></a> <span class=n>public</span> <span class=o>=</span> <span class=kc>True</span>
|
|
<a id=__codelineno-5-7 name=__codelineno-5-7 href=#__codelineno-5-7></a>
|
|
<a id=__codelineno-5-8 name=__codelineno-5-8 href=#__codelineno-5-8></a> <span class=k>class</span><span class=w> </span><span class=nc>Cache</span><span class=p>:</span>
|
|
<a id=__codelineno-5-9 name=__codelineno-5-9 href=#__codelineno-5-9></a> <span class=n>ttl</span> <span class=o>=</span> <span class=mi>60</span>
|
|
<a id=__codelineno-5-10 name=__codelineno-5-10 href=#__codelineno-5-10></a>
|
|
<a id=__codelineno-5-11 name=__codelineno-5-11 href=#__codelineno-5-11></a> <span class=k>class</span><span class=w> </span><span class=nc>Storybook</span><span class=p>:</span>
|
|
<a id=__codelineno-5-12 name=__codelineno-5-12 href=#__codelineno-5-12></a> <span class=k>def</span><span class=w> </span><span class=nf>title</span><span class=p>(</span><span class=bp>self</span><span class=p>):</span>
|
|
<a id=__codelineno-5-13 name=__codelineno-5-13 href=#__codelineno-5-13></a> <span class=k>return</span> <span class=bp>self</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=vm>__name__</span>
|
|
</code></pre></div> <div class="admonition info"> <p class=admonition-title>Info</p> <p>If you define an attribute as a function, it is like defining a method on the extension class.</p> <p>E.g. in the example above, <code>title</code> is a method on the <code>Storybook</code> extension class.</p> </div> <p>As the name suggests, these are defaults, and so you can still selectively override them on a per-component basis:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-6-1 name=__codelineno-6-1 href=#__codelineno-6-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-6-2 name=__codelineno-6-2 href=#__codelineno-6-2></a> <span class=k>class</span><span class=w> </span><span class=nc>View</span><span class=p>:</span>
|
|
<a id=__codelineno-6-3 name=__codelineno-6-3 href=#__codelineno-6-3></a> <span class=n>public</span> <span class=o>=</span> <span class=kc>False</span>
|
|
</code></pre></div> <h3 id=extensions-in-component-instances>Extensions in component instances<a class=headerlink href=#extensions-in-component-instances title="Permanent link">¤</a></h3> <p>Above, we've configured extensions <code>View</code> and <code>Storybook</code> for the <code>MyTable</code> component.</p> <p>You can access the instances of these extension classes in the component instance.</p> <p>Extensions are available under their names (e.g. <code>self.view</code>, <code>self.storybook</code>).</p> <p>For example, the View extension is available as <code>self.view</code>:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-7-1 name=__codelineno-7-1 href=#__codelineno-7-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-7-2 name=__codelineno-7-2 href=#__codelineno-7-2></a> <span class=k>def</span><span class=w> </span><span class=nf>get_template_data</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>args</span><span class=p>,</span> <span class=n>kwargs</span><span class=p>,</span> <span class=n>slots</span><span class=p>,</span> <span class=n>context</span><span class=p>):</span>
|
|
<a id=__codelineno-7-3 name=__codelineno-7-3 href=#__codelineno-7-3></a> <span class=c1># `self.view` points to the instance of `View` extension.</span>
|
|
<a id=__codelineno-7-4 name=__codelineno-7-4 href=#__codelineno-7-4></a> <span class=k>return</span> <span class=p>{</span>
|
|
<a id=__codelineno-7-5 name=__codelineno-7-5 href=#__codelineno-7-5></a> <span class=s2>"view"</span><span class=p>:</span> <span class=bp>self</span><span class=o>.</span><span class=n>view</span><span class=p>,</span>
|
|
<a id=__codelineno-7-6 name=__codelineno-7-6 href=#__codelineno-7-6></a> <span class=p>}</span>
|
|
</code></pre></div> <p>And the Storybook extension is available as <code>self.storybook</code>:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-8-1 name=__codelineno-8-1 href=#__codelineno-8-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-8-2 name=__codelineno-8-2 href=#__codelineno-8-2></a> <span class=k>def</span><span class=w> </span><span class=nf>get_template_data</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>args</span><span class=p>,</span> <span class=n>kwargs</span><span class=p>,</span> <span class=n>slots</span><span class=p>,</span> <span class=n>context</span><span class=p>):</span>
|
|
<a id=__codelineno-8-3 name=__codelineno-8-3 href=#__codelineno-8-3></a> <span class=c1># `self.storybook` points to the instance of `Storybook` extension.</span>
|
|
<a id=__codelineno-8-4 name=__codelineno-8-4 href=#__codelineno-8-4></a> <span class=k>return</span> <span class=p>{</span>
|
|
<a id=__codelineno-8-5 name=__codelineno-8-5 href=#__codelineno-8-5></a> <span class=s2>"title"</span><span class=p>:</span> <span class=bp>self</span><span class=o>.</span><span class=n>storybook</span><span class=o>.</span><span class=n>title</span><span class=p>(),</span>
|
|
<a id=__codelineno-8-6 name=__codelineno-8-6 href=#__codelineno-8-6></a> <span class=p>}</span>
|
|
</code></pre></div> <h2 id=writing-extensions>Writing extensions<a class=headerlink href=#writing-extensions title="Permanent link">¤</a></h2> <p>Creating extensions in django-components involves defining a class that inherits from <a href=../../../reference/api/#django_components.ComponentExtension><code>ComponentExtension</code></a>. This class can implement various lifecycle hooks and define new attributes or methods to be added to components.</p> <h3 id=extension-class>Extension class<a class=headerlink href=#extension-class title="Permanent link">¤</a></h3> <p>To create an extension, define a class that inherits from <a href=../../../reference/api/#django_components.ComponentExtension><code>ComponentExtension</code></a> and implement the desired hooks.</p> <ul> <li>Each extension MUST have a <code>name</code> attribute. The name MUST be a valid Python identifier.</li> <li> <p>The extension may implement any of the <a href=../../../reference/extension_hooks>hook methods</a>.</p> <p>Each hook method receives a context object with relevant data.</p> </li> <li> <p>Extension may own <a href=#extension-urls>URLs</a> or <a href=#extension-commands>CLI commands</a>.</p> </li> </ul> <div class=highlight><pre><span></span><code><a id=__codelineno-9-1 name=__codelineno-9-1 href=#__codelineno-9-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components.extension</span><span class=w> </span><span class=kn>import</span> <span class=n>ComponentExtension</span><span class=p>,</span> <span class=n>OnComponentClassCreatedContext</span>
|
|
<a id=__codelineno-9-2 name=__codelineno-9-2 href=#__codelineno-9-2></a>
|
|
<a id=__codelineno-9-3 name=__codelineno-9-3 href=#__codelineno-9-3></a><span class=k>class</span><span class=w> </span><span class=nc>MyExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
|
|
<a id=__codelineno-9-4 name=__codelineno-9-4 href=#__codelineno-9-4></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"my_extension"</span>
|
|
<a id=__codelineno-9-5 name=__codelineno-9-5 href=#__codelineno-9-5></a>
|
|
<a id=__codelineno-9-6 name=__codelineno-9-6 href=#__codelineno-9-6></a> <span class=k>def</span><span class=w> </span><span class=nf>on_component_class_created</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>ctx</span><span class=p>:</span> <span class=n>OnComponentClassCreatedContext</span><span class=p>)</span> <span class=o>-></span> <span class=kc>None</span><span class=p>:</span>
|
|
<a id=__codelineno-9-7 name=__codelineno-9-7 href=#__codelineno-9-7></a> <span class=c1># Custom logic for when a component class is created</span>
|
|
<a id=__codelineno-9-8 name=__codelineno-9-8 href=#__codelineno-9-8></a> <span class=n>ctx</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=n>my_attr</span> <span class=o>=</span> <span class=s2>"my_value"</span>
|
|
</code></pre></div> <div class="admonition warning"> <p class=admonition-title>Warning</p> <p>The <code>name</code> attribute MUST be unique across all extensions.</p> <p>Moreover, the <code>name</code> attribute MUST NOT conflict with existing Component class API.</p> <p>So if you name an extension <code>render</code>, it will conflict with the <a href=../../../reference/api/#django_components.Component.render><code>render()</code></a> method of the <code>Component</code> class.</p> </div> <h3 id=component-config>Component config<a class=headerlink href=#component-config title="Permanent link">¤</a></h3> <p>In previous sections we've seen the <code>View</code> and <code>Storybook</code> extensions classes that were nested within the <a href=../../../reference/api/#django_components.Component><code>Component</code></a> class:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-10-1 name=__codelineno-10-1 href=#__codelineno-10-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyComponent</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-10-2 name=__codelineno-10-2 href=#__codelineno-10-2></a> <span class=k>class</span><span class=w> </span><span class=nc>View</span><span class=p>:</span>
|
|
<a id=__codelineno-10-3 name=__codelineno-10-3 href=#__codelineno-10-3></a> <span class=o>...</span>
|
|
<a id=__codelineno-10-4 name=__codelineno-10-4 href=#__codelineno-10-4></a>
|
|
<a id=__codelineno-10-5 name=__codelineno-10-5 href=#__codelineno-10-5></a> <span class=k>class</span><span class=w> </span><span class=nc>Storybook</span><span class=p>:</span>
|
|
<a id=__codelineno-10-6 name=__codelineno-10-6 href=#__codelineno-10-6></a> <span class=o>...</span>
|
|
</code></pre></div> <p>These can be understood as component-specific overrides or configuration.</p> <p>Whether it's <code>Component.View</code> or <code>Component.Storybook</code>, their respective extensions defined how these nested classes will behave.</p> <p>For example, the View extension defines the API that users may override in <code>ViewExtension.ComponentConfig</code>:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-11-1 name=__codelineno-11-1 href=#__codelineno-11-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components.extension</span><span class=w> </span><span class=kn>import</span> <span class=n>ComponentExtension</span><span class=p>,</span> <span class=n>ExtensionComponentConfig</span>
|
|
<a id=__codelineno-11-2 name=__codelineno-11-2 href=#__codelineno-11-2></a>
|
|
<a id=__codelineno-11-3 name=__codelineno-11-3 href=#__codelineno-11-3></a><span class=k>class</span><span class=w> </span><span class=nc>ViewExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
|
|
<a id=__codelineno-11-4 name=__codelineno-11-4 href=#__codelineno-11-4></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"view"</span>
|
|
<a id=__codelineno-11-5 name=__codelineno-11-5 href=#__codelineno-11-5></a>
|
|
<a id=__codelineno-11-6 name=__codelineno-11-6 href=#__codelineno-11-6></a> <span class=c1># The default behavior of the `View` extension class.</span>
|
|
<a id=__codelineno-11-7 name=__codelineno-11-7 href=#__codelineno-11-7></a> <span class=k>class</span><span class=w> </span><span class=nc>ComponentConfig</span><span class=p>(</span><span class=n>ExtensionComponentConfig</span><span class=p>):</span>
|
|
<a id=__codelineno-11-8 name=__codelineno-11-8 href=#__codelineno-11-8></a> <span class=k>def</span><span class=w> </span><span class=nf>get</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>request</span><span class=p>):</span>
|
|
<a id=__codelineno-11-9 name=__codelineno-11-9 href=#__codelineno-11-9></a> <span class=k>raise</span> <span class=ne>NotImplementedError</span><span class=p>(</span><span class=s2>"You must implement the `get` method."</span><span class=p>)</span>
|
|
<a id=__codelineno-11-10 name=__codelineno-11-10 href=#__codelineno-11-10></a>
|
|
<a id=__codelineno-11-11 name=__codelineno-11-11 href=#__codelineno-11-11></a> <span class=k>def</span><span class=w> </span><span class=nf>post</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>request</span><span class=p>):</span>
|
|
<a id=__codelineno-11-12 name=__codelineno-11-12 href=#__codelineno-11-12></a> <span class=k>raise</span> <span class=ne>NotImplementedError</span><span class=p>(</span><span class=s2>"You must implement the `post` method."</span><span class=p>)</span>
|
|
<a id=__codelineno-11-13 name=__codelineno-11-13 href=#__codelineno-11-13></a>
|
|
<a id=__codelineno-11-14 name=__codelineno-11-14 href=#__codelineno-11-14></a> <span class=o>...</span>
|
|
</code></pre></div> <p>In any component that then defines a nested <code>Component.View</code> extension class, the resulting <code>View</code> class will actually subclass from the <code>ViewExtension.ComponentConfig</code> class.</p> <p>In other words, when you define a component like this:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-12-1 name=__codelineno-12-1 href=#__codelineno-12-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-12-2 name=__codelineno-12-2 href=#__codelineno-12-2></a> <span class=k>class</span><span class=w> </span><span class=nc>View</span><span class=p>:</span>
|
|
<a id=__codelineno-12-3 name=__codelineno-12-3 href=#__codelineno-12-3></a> <span class=k>def</span><span class=w> </span><span class=nf>get</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>request</span><span class=p>):</span>
|
|
<a id=__codelineno-12-4 name=__codelineno-12-4 href=#__codelineno-12-4></a> <span class=c1># Do something</span>
|
|
<a id=__codelineno-12-5 name=__codelineno-12-5 href=#__codelineno-12-5></a> <span class=o>...</span>
|
|
</code></pre></div> <p>Behind the scenes it is as if you defined the following:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-13-1 name=__codelineno-13-1 href=#__codelineno-13-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-13-2 name=__codelineno-13-2 href=#__codelineno-13-2></a> <span class=k>class</span><span class=w> </span><span class=nc>View</span><span class=p>(</span><span class=n>ViewExtension</span><span class=o>.</span><span class=n>ComponentConfig</span><span class=p>):</span>
|
|
<a id=__codelineno-13-3 name=__codelineno-13-3 href=#__codelineno-13-3></a> <span class=k>def</span><span class=w> </span><span class=nf>get</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>request</span><span class=p>):</span>
|
|
<a id=__codelineno-13-4 name=__codelineno-13-4 href=#__codelineno-13-4></a> <span class=c1># Do something</span>
|
|
<a id=__codelineno-13-5 name=__codelineno-13-5 href=#__codelineno-13-5></a> <span class=o>...</span>
|
|
</code></pre></div> <div class="admonition warning"> <p class=admonition-title>Warning</p> <p>When writing an extension, the <code>ComponentConfig</code> MUST subclass the base class <a href=../../../reference/api/#django_components.ExtensionComponentConfig><code>ExtensionComponentConfig</code></a>.</p> <p>This base class ensures that the extension class will have access to the component instance.</p> </div> <h3 id=install-your-extension>Install your extension<a class=headerlink href=#install-your-extension title="Permanent link">¤</a></h3> <p>Once the extension is defined, it needs to be installed in the Django settings to be used by the application.</p> <p>Extensions can be given either as an extension class, or its import string:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-14-1 name=__codelineno-14-1 href=#__codelineno-14-1></a><span class=c1># settings.py</span>
|
|
<a id=__codelineno-14-2 name=__codelineno-14-2 href=#__codelineno-14-2></a><span class=n>COMPONENTS</span> <span class=o>=</span> <span class=p>{</span>
|
|
<a id=__codelineno-14-3 name=__codelineno-14-3 href=#__codelineno-14-3></a> <span class=s2>"extensions"</span><span class=p>:</span> <span class=p>[</span>
|
|
<a id=__codelineno-14-4 name=__codelineno-14-4 href=#__codelineno-14-4></a> <span class=s2>"my_app.extensions.MyExtension"</span><span class=p>,</span>
|
|
<a id=__codelineno-14-5 name=__codelineno-14-5 href=#__codelineno-14-5></a> <span class=p>],</span>
|
|
<a id=__codelineno-14-6 name=__codelineno-14-6 href=#__codelineno-14-6></a><span class=p>}</span>
|
|
</code></pre></div> <p>Or by reference:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-15-1 name=__codelineno-15-1 href=#__codelineno-15-1></a><span class=c1># settings.py</span>
|
|
<a id=__codelineno-15-2 name=__codelineno-15-2 href=#__codelineno-15-2></a><span class=kn>from</span><span class=w> </span><span class=nn>my_app.extensions</span><span class=w> </span><span class=kn>import</span> <span class=n>MyExtension</span>
|
|
<a id=__codelineno-15-3 name=__codelineno-15-3 href=#__codelineno-15-3></a>
|
|
<a id=__codelineno-15-4 name=__codelineno-15-4 href=#__codelineno-15-4></a><span class=n>COMPONENTS</span> <span class=o>=</span> <span class=p>{</span>
|
|
<a id=__codelineno-15-5 name=__codelineno-15-5 href=#__codelineno-15-5></a> <span class=s2>"extensions"</span><span class=p>:</span> <span class=p>[</span>
|
|
<a id=__codelineno-15-6 name=__codelineno-15-6 href=#__codelineno-15-6></a> <span class=n>MyExtension</span><span class=p>,</span>
|
|
<a id=__codelineno-15-7 name=__codelineno-15-7 href=#__codelineno-15-7></a> <span class=p>],</span>
|
|
<a id=__codelineno-15-8 name=__codelineno-15-8 href=#__codelineno-15-8></a><span class=p>}</span>
|
|
</code></pre></div> <h3 id=full-example-custom-logging-extension>Full example: Custom logging extension<a class=headerlink href=#full-example-custom-logging-extension title="Permanent link">¤</a></h3> <p>To tie it all together, here's an example of a custom logging extension that logs when components are created, deleted, or rendered:</p> <ul> <li>Each component can specify which color to use for the logging by setting <code>Component.ColorLogger.color</code>.</li> <li>The extension will log the component name and color when the component is created, deleted, or rendered.</li> </ul> <div class=highlight><pre><span></span><code><a id=__codelineno-16-1 name=__codelineno-16-1 href=#__codelineno-16-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components.extension</span><span class=w> </span><span class=kn>import</span> <span class=p>(</span>
|
|
<a id=__codelineno-16-2 name=__codelineno-16-2 href=#__codelineno-16-2></a> <span class=n>ComponentExtension</span><span class=p>,</span>
|
|
<a id=__codelineno-16-3 name=__codelineno-16-3 href=#__codelineno-16-3></a> <span class=n>ExtensionComponentConfig</span><span class=p>,</span>
|
|
<a id=__codelineno-16-4 name=__codelineno-16-4 href=#__codelineno-16-4></a> <span class=n>OnComponentClassCreatedContext</span><span class=p>,</span>
|
|
<a id=__codelineno-16-5 name=__codelineno-16-5 href=#__codelineno-16-5></a> <span class=n>OnComponentClassDeletedContext</span><span class=p>,</span>
|
|
<a id=__codelineno-16-6 name=__codelineno-16-6 href=#__codelineno-16-6></a> <span class=n>OnComponentInputContext</span><span class=p>,</span>
|
|
<a id=__codelineno-16-7 name=__codelineno-16-7 href=#__codelineno-16-7></a><span class=p>)</span>
|
|
<a id=__codelineno-16-8 name=__codelineno-16-8 href=#__codelineno-16-8></a>
|
|
<a id=__codelineno-16-9 name=__codelineno-16-9 href=#__codelineno-16-9></a>
|
|
<a id=__codelineno-16-10 name=__codelineno-16-10 href=#__codelineno-16-10></a><span class=k>class</span><span class=w> </span><span class=nc>ColorLoggerExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
|
|
<a id=__codelineno-16-11 name=__codelineno-16-11 href=#__codelineno-16-11></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"color_logger"</span>
|
|
<a id=__codelineno-16-12 name=__codelineno-16-12 href=#__codelineno-16-12></a>
|
|
<a id=__codelineno-16-13 name=__codelineno-16-13 href=#__codelineno-16-13></a> <span class=c1># All `Component.ColorLogger` classes will inherit from this class.</span>
|
|
<a id=__codelineno-16-14 name=__codelineno-16-14 href=#__codelineno-16-14></a> <span class=k>class</span><span class=w> </span><span class=nc>ComponentConfig</span><span class=p>(</span><span class=n>ExtensionComponentConfig</span><span class=p>):</span>
|
|
<a id=__codelineno-16-15 name=__codelineno-16-15 href=#__codelineno-16-15></a> <span class=n>color</span><span class=p>:</span> <span class=nb>str</span>
|
|
<a id=__codelineno-16-16 name=__codelineno-16-16 href=#__codelineno-16-16></a>
|
|
<a id=__codelineno-16-17 name=__codelineno-16-17 href=#__codelineno-16-17></a> <span class=c1># These hooks don't have access to the Component instance,</span>
|
|
<a id=__codelineno-16-18 name=__codelineno-16-18 href=#__codelineno-16-18></a> <span class=c1># only to the Component class, so we access the color</span>
|
|
<a id=__codelineno-16-19 name=__codelineno-16-19 href=#__codelineno-16-19></a> <span class=c1># as `Component.ColorLogger.color`.</span>
|
|
<a id=__codelineno-16-20 name=__codelineno-16-20 href=#__codelineno-16-20></a> <span class=k>def</span><span class=w> </span><span class=nf>on_component_class_created</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>ctx</span><span class=p>:</span> <span class=n>OnComponentClassCreatedContext</span><span class=p>):</span>
|
|
<a id=__codelineno-16-21 name=__codelineno-16-21 href=#__codelineno-16-21></a> <span class=n>log</span><span class=o>.</span><span class=n>info</span><span class=p>(</span>
|
|
<a id=__codelineno-16-22 name=__codelineno-16-22 href=#__codelineno-16-22></a> <span class=sa>f</span><span class=s2>"Component </span><span class=si>{</span><span class=n>ctx</span><span class=o>.</span><span class=n>component_cls</span><span class=si>}</span><span class=s2> created."</span><span class=p>,</span>
|
|
<a id=__codelineno-16-23 name=__codelineno-16-23 href=#__codelineno-16-23></a> <span class=n>color</span><span class=o>=</span><span class=n>ctx</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=n>ColorLogger</span><span class=o>.</span><span class=n>color</span><span class=p>,</span>
|
|
<a id=__codelineno-16-24 name=__codelineno-16-24 href=#__codelineno-16-24></a> <span class=p>)</span>
|
|
<a id=__codelineno-16-25 name=__codelineno-16-25 href=#__codelineno-16-25></a>
|
|
<a id=__codelineno-16-26 name=__codelineno-16-26 href=#__codelineno-16-26></a> <span class=k>def</span><span class=w> </span><span class=nf>on_component_class_deleted</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>ctx</span><span class=p>:</span> <span class=n>OnComponentClassDeletedContext</span><span class=p>):</span>
|
|
<a id=__codelineno-16-27 name=__codelineno-16-27 href=#__codelineno-16-27></a> <span class=n>log</span><span class=o>.</span><span class=n>info</span><span class=p>(</span>
|
|
<a id=__codelineno-16-28 name=__codelineno-16-28 href=#__codelineno-16-28></a> <span class=sa>f</span><span class=s2>"Component </span><span class=si>{</span><span class=n>ctx</span><span class=o>.</span><span class=n>component_cls</span><span class=si>}</span><span class=s2> deleted."</span><span class=p>,</span>
|
|
<a id=__codelineno-16-29 name=__codelineno-16-29 href=#__codelineno-16-29></a> <span class=n>color</span><span class=o>=</span><span class=n>ctx</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=n>ColorLogger</span><span class=o>.</span><span class=n>color</span><span class=p>,</span>
|
|
<a id=__codelineno-16-30 name=__codelineno-16-30 href=#__codelineno-16-30></a> <span class=p>)</span>
|
|
<a id=__codelineno-16-31 name=__codelineno-16-31 href=#__codelineno-16-31></a>
|
|
<a id=__codelineno-16-32 name=__codelineno-16-32 href=#__codelineno-16-32></a> <span class=c1># This hook has access to the Component instance, so we access the color</span>
|
|
<a id=__codelineno-16-33 name=__codelineno-16-33 href=#__codelineno-16-33></a> <span class=c1># as `self.component.color_logger.color`.</span>
|
|
<a id=__codelineno-16-34 name=__codelineno-16-34 href=#__codelineno-16-34></a> <span class=k>def</span><span class=w> </span><span class=nf>on_component_input</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>ctx</span><span class=p>:</span> <span class=n>OnComponentInputContext</span><span class=p>):</span>
|
|
<a id=__codelineno-16-35 name=__codelineno-16-35 href=#__codelineno-16-35></a> <span class=n>log</span><span class=o>.</span><span class=n>info</span><span class=p>(</span>
|
|
<a id=__codelineno-16-36 name=__codelineno-16-36 href=#__codelineno-16-36></a> <span class=sa>f</span><span class=s2>"Rendering component </span><span class=si>{</span><span class=n>ctx</span><span class=o>.</span><span class=n>component_cls</span><span class=si>}</span><span class=s2>."</span><span class=p>,</span>
|
|
<a id=__codelineno-16-37 name=__codelineno-16-37 href=#__codelineno-16-37></a> <span class=n>color</span><span class=o>=</span><span class=n>ctx</span><span class=o>.</span><span class=n>component</span><span class=o>.</span><span class=n>color_logger</span><span class=o>.</span><span class=n>color</span><span class=p>,</span>
|
|
<a id=__codelineno-16-38 name=__codelineno-16-38 href=#__codelineno-16-38></a> <span class=p>)</span>
|
|
</code></pre></div> <p>To use the <code>ColorLoggerExtension</code>, add it to your settings:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-17-1 name=__codelineno-17-1 href=#__codelineno-17-1></a><span class=c1># settings.py</span>
|
|
<a id=__codelineno-17-2 name=__codelineno-17-2 href=#__codelineno-17-2></a><span class=n>COMPONENTS</span> <span class=o>=</span> <span class=p>{</span>
|
|
<a id=__codelineno-17-3 name=__codelineno-17-3 href=#__codelineno-17-3></a> <span class=s2>"extensions"</span><span class=p>:</span> <span class=p>[</span>
|
|
<a id=__codelineno-17-4 name=__codelineno-17-4 href=#__codelineno-17-4></a> <span class=n>ColorLoggerExtension</span><span class=p>,</span>
|
|
<a id=__codelineno-17-5 name=__codelineno-17-5 href=#__codelineno-17-5></a> <span class=p>],</span>
|
|
<a id=__codelineno-17-6 name=__codelineno-17-6 href=#__codelineno-17-6></a><span class=p>}</span>
|
|
</code></pre></div> <p>Once installed, in any component, you can define a <code>ColorLogger</code> attribute:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-18-1 name=__codelineno-18-1 href=#__codelineno-18-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyComponent</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-18-2 name=__codelineno-18-2 href=#__codelineno-18-2></a> <span class=k>class</span><span class=w> </span><span class=nc>ColorLogger</span><span class=p>:</span>
|
|
<a id=__codelineno-18-3 name=__codelineno-18-3 href=#__codelineno-18-3></a> <span class=n>color</span> <span class=o>=</span> <span class=s2>"red"</span>
|
|
</code></pre></div> <p>This will log the component name and color when the component is created, deleted, or rendered.</p> <h3 id=utility-functions>Utility functions<a class=headerlink href=#utility-functions title="Permanent link">¤</a></h3> <p>django-components provides a few utility functions to help with writing extensions:</p> <ul> <li><a href=../../../reference/api#django_components.all_components><code>all_components()</code></a> - returns a list of all created component classes.</li> <li><a href=../../../reference/api#django_components.all_registries><code>all_registries()</code></a> - returns a list of all created registry instances.</li> </ul> <h3 id=access-component-class>Access component class<a class=headerlink href=#access-component-class title="Permanent link">¤</a></h3> <p>You can access the owner <a href=../../../reference/api/#django_components.Component><code>Component</code></a> class (<code>MyTable</code>) from within methods of the extension class (<code>MyExtension</code>) by using the <a href=../../../reference/api/#django_components.ExtensionComponentConfig.component_cls><code>component_cls</code></a> attribute:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-19-1 name=__codelineno-19-1 href=#__codelineno-19-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyTable</span><span class=p>(</span><span class=n>Component</span><span class=p>):</span>
|
|
<a id=__codelineno-19-2 name=__codelineno-19-2 href=#__codelineno-19-2></a> <span class=k>class</span><span class=w> </span><span class=nc>MyExtension</span><span class=p>:</span>
|
|
<a id=__codelineno-19-3 name=__codelineno-19-3 href=#__codelineno-19-3></a> <span class=k>def</span><span class=w> </span><span class=nf>some_method</span><span class=p>(</span><span class=bp>self</span><span class=p>):</span>
|
|
<a id=__codelineno-19-4 name=__codelineno-19-4 href=#__codelineno-19-4></a> <span class=nb>print</span><span class=p>(</span><span class=bp>self</span><span class=o>.</span><span class=n>component_cls</span><span class=p>)</span>
|
|
</code></pre></div> <p>Here is how the <code>component_cls</code> attribute may be used with our <code>ColorLogger</code> extension shown above:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-20-1 name=__codelineno-20-1 href=#__codelineno-20-1></a><span class=k>class</span><span class=w> </span><span class=nc>ColorLoggerComponentConfig</span><span class=p>(</span><span class=n>ExtensionComponentConfig</span><span class=p>):</span>
|
|
<a id=__codelineno-20-2 name=__codelineno-20-2 href=#__codelineno-20-2></a> <span class=n>color</span><span class=p>:</span> <span class=nb>str</span>
|
|
<a id=__codelineno-20-3 name=__codelineno-20-3 href=#__codelineno-20-3></a>
|
|
<a id=__codelineno-20-4 name=__codelineno-20-4 href=#__codelineno-20-4></a> <span class=k>def</span><span class=w> </span><span class=nf>log</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>msg</span><span class=p>:</span> <span class=nb>str</span><span class=p>)</span> <span class=o>-></span> <span class=kc>None</span><span class=p>:</span>
|
|
<a id=__codelineno-20-5 name=__codelineno-20-5 href=#__codelineno-20-5></a> <span class=nb>print</span><span class=p>(</span><span class=sa>f</span><span class=s2>"</span><span class=si>{</span><span class=bp>self</span><span class=o>.</span><span class=n>component_cls</span><span class=o>.</span><span class=vm>__name__</span><span class=si>}</span><span class=s2>: </span><span class=si>{</span><span class=n>msg</span><span class=si>}</span><span class=s2>"</span><span class=p>)</span>
|
|
<a id=__codelineno-20-6 name=__codelineno-20-6 href=#__codelineno-20-6></a>
|
|
<a id=__codelineno-20-7 name=__codelineno-20-7 href=#__codelineno-20-7></a>
|
|
<a id=__codelineno-20-8 name=__codelineno-20-8 href=#__codelineno-20-8></a><span class=k>class</span><span class=w> </span><span class=nc>ColorLoggerExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
|
|
<a id=__codelineno-20-9 name=__codelineno-20-9 href=#__codelineno-20-9></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"color_logger"</span>
|
|
<a id=__codelineno-20-10 name=__codelineno-20-10 href=#__codelineno-20-10></a>
|
|
<a id=__codelineno-20-11 name=__codelineno-20-11 href=#__codelineno-20-11></a> <span class=c1># All `Component.ColorLogger` classes will inherit from this class.</span>
|
|
<a id=__codelineno-20-12 name=__codelineno-20-12 href=#__codelineno-20-12></a> <span class=n>ComponentConfig</span> <span class=o>=</span> <span class=n>ColorLoggerComponentConfig</span>
|
|
</code></pre></div> <h3 id=pass-slot-metadata>Pass slot metadata<a class=headerlink href=#pass-slot-metadata title="Permanent link">¤</a></h3> <p>When a slot is passed to a component, it is copied, so that the original slot is not modified with rendering metadata.</p> <p>Therefore, don't use slot's identity to associate metadata with the slot:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-21-1 name=__codelineno-21-1 href=#__codelineno-21-1></a><span class=c1># ❌ Don't do this:</span>
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<a id=__codelineno-21-2 name=__codelineno-21-2 href=#__codelineno-21-2></a><span class=n>slots_cache</span> <span class=o>=</span> <span class=p>{}</span>
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|
<a id=__codelineno-21-3 name=__codelineno-21-3 href=#__codelineno-21-3></a>
|
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<a id=__codelineno-21-4 name=__codelineno-21-4 href=#__codelineno-21-4></a><span class=k>class</span><span class=w> </span><span class=nc>LoggerExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
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<a id=__codelineno-21-5 name=__codelineno-21-5 href=#__codelineno-21-5></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"logger"</span>
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<a id=__codelineno-21-6 name=__codelineno-21-6 href=#__codelineno-21-6></a>
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<a id=__codelineno-21-7 name=__codelineno-21-7 href=#__codelineno-21-7></a> <span class=k>def</span><span class=w> </span><span class=nf>on_component_input</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>ctx</span><span class=p>:</span> <span class=n>OnComponentInputContext</span><span class=p>):</span>
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<a id=__codelineno-21-8 name=__codelineno-21-8 href=#__codelineno-21-8></a> <span class=k>for</span> <span class=n>slot</span> <span class=ow>in</span> <span class=n>ctx</span><span class=o>.</span><span class=n>component</span><span class=o>.</span><span class=n>slots</span><span class=o>.</span><span class=n>values</span><span class=p>():</span>
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<a id=__codelineno-21-9 name=__codelineno-21-9 href=#__codelineno-21-9></a> <span class=n>slots_cache</span><span class=p>[</span><span class=nb>id</span><span class=p>(</span><span class=n>slot</span><span class=p>)]</span> <span class=o>=</span> <span class=p>{</span><span class=s2>"some"</span><span class=p>:</span> <span class=s2>"metadata"</span><span class=p>}</span>
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</code></pre></div> <p>Instead, use the <a href=../../../reference/api#django_components.Slot.extra><code>Slot.extra</code></a> attribute, which is copied from the original slot:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-22-1 name=__codelineno-22-1 href=#__codelineno-22-1></a><span class=c1># ✅ Do this:</span>
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<a id=__codelineno-22-2 name=__codelineno-22-2 href=#__codelineno-22-2></a><span class=k>class</span><span class=w> </span><span class=nc>LoggerExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
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|
<a id=__codelineno-22-3 name=__codelineno-22-3 href=#__codelineno-22-3></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"logger"</span>
|
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<a id=__codelineno-22-4 name=__codelineno-22-4 href=#__codelineno-22-4></a>
|
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<a id=__codelineno-22-5 name=__codelineno-22-5 href=#__codelineno-22-5></a> <span class=c1># Save component-level logger settings for each slot when a component is rendered.</span>
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<a id=__codelineno-22-6 name=__codelineno-22-6 href=#__codelineno-22-6></a> <span class=k>def</span><span class=w> </span><span class=nf>on_component_input</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>ctx</span><span class=p>:</span> <span class=n>OnComponentInputContext</span><span class=p>):</span>
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<a id=__codelineno-22-7 name=__codelineno-22-7 href=#__codelineno-22-7></a> <span class=k>for</span> <span class=n>slot</span> <span class=ow>in</span> <span class=n>ctx</span><span class=o>.</span><span class=n>component</span><span class=o>.</span><span class=n>slots</span><span class=o>.</span><span class=n>values</span><span class=p>():</span>
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<a id=__codelineno-22-8 name=__codelineno-22-8 href=#__codelineno-22-8></a> <span class=n>slot</span><span class=o>.</span><span class=n>extra</span><span class=p>[</span><span class=s2>"logger"</span><span class=p>]</span> <span class=o>=</span> <span class=n>ctx</span><span class=o>.</span><span class=n>component</span><span class=o>.</span><span class=n>logger</span>
|
|
<a id=__codelineno-22-9 name=__codelineno-22-9 href=#__codelineno-22-9></a>
|
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<a id=__codelineno-22-10 name=__codelineno-22-10 href=#__codelineno-22-10></a> <span class=c1># Then, when a fill is rendered with `{% slot %}`, we can access the logger settings</span>
|
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<a id=__codelineno-22-11 name=__codelineno-22-11 href=#__codelineno-22-11></a> <span class=c1># from the slot's metadata.</span>
|
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<a id=__codelineno-22-12 name=__codelineno-22-12 href=#__codelineno-22-12></a> <span class=k>def</span><span class=w> </span><span class=nf>on_slot_rendered</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>ctx</span><span class=p>:</span> <span class=n>OnSlotRenderedContext</span><span class=p>):</span>
|
|
<a id=__codelineno-22-13 name=__codelineno-22-13 href=#__codelineno-22-13></a> <span class=n>logger</span> <span class=o>=</span> <span class=n>ctx</span><span class=o>.</span><span class=n>slot</span><span class=o>.</span><span class=n>extra</span><span class=p>[</span><span class=s2>"logger"</span><span class=p>]</span>
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|
<a id=__codelineno-22-14 name=__codelineno-22-14 href=#__codelineno-22-14></a> <span class=n>logger</span><span class=o>.</span><span class=n>log</span><span class=p>(</span><span class=o>...</span><span class=p>)</span>
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</code></pre></div> <h2 id=extension-commands>Extension commands<a class=headerlink href=#extension-commands title="Permanent link">¤</a></h2> <p>Extensions in django-components can define custom commands that can be executed via the Django management command interface. This allows for powerful automation and customization capabilities.</p> <p>For example, if you have an extension that defines a command that prints "Hello world", you can run the command with:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-23-1 name=__codelineno-23-1 href=#__codelineno-23-1></a>python<span class=w> </span>manage.py<span class=w> </span>components<span class=w> </span>ext<span class=w> </span>run<span class=w> </span>my_ext<span class=w> </span>hello
|
|
</code></pre></div> <p>Where:</p> <ul> <li><code>python manage.py components</code> - is the Django entrypoint</li> <li><code>ext run</code> - is the subcommand to run extension commands</li> <li><code>my_ext</code> - is the extension name</li> <li><code>hello</code> - is the command name</li> </ul> <h3 id=define-commands>Define commands<a class=headerlink href=#define-commands title="Permanent link">¤</a></h3> <p>To define a command, subclass from <a href=../../../reference/extension_commands#django_components.ComponentCommand><code>ComponentCommand</code></a>. This subclass should define:</p> <ul> <li><code>name</code> - the command's name</li> <li><code>help</code> - the command's help text</li> <li><code>handle</code> - the logic to execute when the command is run</li> </ul> <div class=highlight><pre><span></span><code><a id=__codelineno-24-1 name=__codelineno-24-1 href=#__codelineno-24-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components</span><span class=w> </span><span class=kn>import</span> <span class=n>ComponentCommand</span><span class=p>,</span> <span class=n>ComponentExtension</span>
|
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<a id=__codelineno-24-2 name=__codelineno-24-2 href=#__codelineno-24-2></a>
|
|
<a id=__codelineno-24-3 name=__codelineno-24-3 href=#__codelineno-24-3></a><span class=k>class</span><span class=w> </span><span class=nc>HelloCommand</span><span class=p>(</span><span class=n>ComponentCommand</span><span class=p>):</span>
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<a id=__codelineno-24-4 name=__codelineno-24-4 href=#__codelineno-24-4></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"hello"</span>
|
|
<a id=__codelineno-24-5 name=__codelineno-24-5 href=#__codelineno-24-5></a> <span class=n>help</span> <span class=o>=</span> <span class=s2>"Say hello"</span>
|
|
<a id=__codelineno-24-6 name=__codelineno-24-6 href=#__codelineno-24-6></a>
|
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<a id=__codelineno-24-7 name=__codelineno-24-7 href=#__codelineno-24-7></a> <span class=k>def</span><span class=w> </span><span class=nf>handle</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=o>*</span><span class=n>args</span><span class=p>,</span> <span class=o>**</span><span class=n>kwargs</span><span class=p>):</span>
|
|
<a id=__codelineno-24-8 name=__codelineno-24-8 href=#__codelineno-24-8></a> <span class=nb>print</span><span class=p>(</span><span class=s2>"Hello, world!"</span><span class=p>)</span>
|
|
<a id=__codelineno-24-9 name=__codelineno-24-9 href=#__codelineno-24-9></a>
|
|
<a id=__codelineno-24-10 name=__codelineno-24-10 href=#__codelineno-24-10></a><span class=k>class</span><span class=w> </span><span class=nc>MyExt</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
|
|
<a id=__codelineno-24-11 name=__codelineno-24-11 href=#__codelineno-24-11></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"my_ext"</span>
|
|
<a id=__codelineno-24-12 name=__codelineno-24-12 href=#__codelineno-24-12></a> <span class=n>commands</span> <span class=o>=</span> <span class=p>[</span><span class=n>HelloCommand</span><span class=p>]</span>
|
|
</code></pre></div> <h3 id=define-arguments-and-options>Define arguments and options<a class=headerlink href=#define-arguments-and-options title="Permanent link">¤</a></h3> <p>Commands can accept positional arguments and options (e.g. <code>--foo</code>), which are defined using the <a href=../../../reference/extension_commands#django_components.ComponentCommand.arguments><code>arguments</code></a> attribute of the <a href=../../../reference/extension_commands#django_components.ComponentCommand><code>ComponentCommand</code></a> class.</p> <p>The arguments are parsed with <a href=https://docs.python.org/3/library/argparse.html><code>argparse</code></a> into a dictionary of arguments and options. These are then available as keyword arguments to the <a href=../../../reference/extension_commands#django_components.ComponentCommand.handle><code>handle</code></a> method of the command.</p> <div class=highlight><pre><span></span><code><a id=__codelineno-25-1 name=__codelineno-25-1 href=#__codelineno-25-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components</span><span class=w> </span><span class=kn>import</span> <span class=n>CommandArg</span><span class=p>,</span> <span class=n>ComponentCommand</span><span class=p>,</span> <span class=n>ComponentExtension</span>
|
|
<a id=__codelineno-25-2 name=__codelineno-25-2 href=#__codelineno-25-2></a>
|
|
<a id=__codelineno-25-3 name=__codelineno-25-3 href=#__codelineno-25-3></a><span class=k>class</span><span class=w> </span><span class=nc>HelloCommand</span><span class=p>(</span><span class=n>ComponentCommand</span><span class=p>):</span>
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|
<a id=__codelineno-25-4 name=__codelineno-25-4 href=#__codelineno-25-4></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"hello"</span>
|
|
<a id=__codelineno-25-5 name=__codelineno-25-5 href=#__codelineno-25-5></a> <span class=n>help</span> <span class=o>=</span> <span class=s2>"Say hello"</span>
|
|
<a id=__codelineno-25-6 name=__codelineno-25-6 href=#__codelineno-25-6></a>
|
|
<a id=__codelineno-25-7 name=__codelineno-25-7 href=#__codelineno-25-7></a> <span class=n>arguments</span> <span class=o>=</span> <span class=p>[</span>
|
|
<a id=__codelineno-25-8 name=__codelineno-25-8 href=#__codelineno-25-8></a> <span class=c1># Positional argument</span>
|
|
<a id=__codelineno-25-9 name=__codelineno-25-9 href=#__codelineno-25-9></a> <span class=n>CommandArg</span><span class=p>(</span>
|
|
<a id=__codelineno-25-10 name=__codelineno-25-10 href=#__codelineno-25-10></a> <span class=n>name_or_flags</span><span class=o>=</span><span class=s2>"name"</span><span class=p>,</span>
|
|
<a id=__codelineno-25-11 name=__codelineno-25-11 href=#__codelineno-25-11></a> <span class=n>help</span><span class=o>=</span><span class=s2>"The name to say hello to"</span><span class=p>,</span>
|
|
<a id=__codelineno-25-12 name=__codelineno-25-12 href=#__codelineno-25-12></a> <span class=p>),</span>
|
|
<a id=__codelineno-25-13 name=__codelineno-25-13 href=#__codelineno-25-13></a> <span class=c1># Optional argument</span>
|
|
<a id=__codelineno-25-14 name=__codelineno-25-14 href=#__codelineno-25-14></a> <span class=n>CommandArg</span><span class=p>(</span>
|
|
<a id=__codelineno-25-15 name=__codelineno-25-15 href=#__codelineno-25-15></a> <span class=n>name_or_flags</span><span class=o>=</span><span class=p>[</span><span class=s2>"--shout"</span><span class=p>,</span> <span class=s2>"-s"</span><span class=p>],</span>
|
|
<a id=__codelineno-25-16 name=__codelineno-25-16 href=#__codelineno-25-16></a> <span class=n>action</span><span class=o>=</span><span class=s2>"store_true"</span><span class=p>,</span>
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<a id=__codelineno-25-17 name=__codelineno-25-17 href=#__codelineno-25-17></a> <span class=n>help</span><span class=o>=</span><span class=s2>"Shout the hello"</span><span class=p>,</span>
|
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<a id=__codelineno-25-18 name=__codelineno-25-18 href=#__codelineno-25-18></a> <span class=p>),</span>
|
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<a id=__codelineno-25-19 name=__codelineno-25-19 href=#__codelineno-25-19></a> <span class=p>]</span>
|
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<a id=__codelineno-25-20 name=__codelineno-25-20 href=#__codelineno-25-20></a>
|
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<a id=__codelineno-25-21 name=__codelineno-25-21 href=#__codelineno-25-21></a> <span class=k>def</span><span class=w> </span><span class=nf>handle</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>name</span><span class=p>:</span> <span class=nb>str</span><span class=p>,</span> <span class=o>*</span><span class=n>args</span><span class=p>,</span> <span class=o>**</span><span class=n>kwargs</span><span class=p>):</span>
|
|
<a id=__codelineno-25-22 name=__codelineno-25-22 href=#__codelineno-25-22></a> <span class=n>shout</span> <span class=o>=</span> <span class=n>kwargs</span><span class=o>.</span><span class=n>get</span><span class=p>(</span><span class=s2>"shout"</span><span class=p>,</span> <span class=kc>False</span><span class=p>)</span>
|
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<a id=__codelineno-25-23 name=__codelineno-25-23 href=#__codelineno-25-23></a> <span class=n>msg</span> <span class=o>=</span> <span class=sa>f</span><span class=s2>"Hello, </span><span class=si>{</span><span class=n>name</span><span class=si>}</span><span class=s2>!"</span>
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<a id=__codelineno-25-24 name=__codelineno-25-24 href=#__codelineno-25-24></a> <span class=k>if</span> <span class=n>shout</span><span class=p>:</span>
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<a id=__codelineno-25-25 name=__codelineno-25-25 href=#__codelineno-25-25></a> <span class=n>msg</span> <span class=o>=</span> <span class=n>msg</span><span class=o>.</span><span class=n>upper</span><span class=p>()</span>
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<a id=__codelineno-25-26 name=__codelineno-25-26 href=#__codelineno-25-26></a> <span class=nb>print</span><span class=p>(</span><span class=n>msg</span><span class=p>)</span>
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|
</code></pre></div> <p>You can run the command with arguments and options:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-26-1 name=__codelineno-26-1 href=#__codelineno-26-1></a>python<span class=w> </span>manage.py<span class=w> </span>components<span class=w> </span>ext<span class=w> </span>run<span class=w> </span>my_ext<span class=w> </span>hello<span class=w> </span>John<span class=w> </span>--shout
|
|
<a id=__codelineno-26-2 name=__codelineno-26-2 href=#__codelineno-26-2></a>>>><span class=w> </span>HELLO,<span class=w> </span>JOHN!
|
|
</code></pre></div> <div class="admonition note"> <p class=admonition-title>Note</p> <p>Command definitions are parsed with <code>argparse</code>, so you can use all the features of <code>argparse</code> to define your arguments and options.</p> <p>See the <a href=https://docs.python.org/3/library/argparse.html>argparse documentation</a> for more information.</p> <p>django-components defines types as <a href=../../../reference/extension_commands#django_components.CommandArg><code>CommandArg</code></a>, <a href=../../../reference/extension_commands#django_components.CommandArgGroup><code>CommandArgGroup</code></a>, <a href=../../../reference/extension_commands#django_components.CommandSubcommand><code>CommandSubcommand</code></a>, and <a href=../../../reference/extension_commands#django_components.CommandParserInput><code>CommandParserInput</code></a> to help with type checking.</p> </div> <div class="admonition note"> <p class=admonition-title>Note</p> <p>If a command doesn't have the <a href=../../../reference/extension_commands#django_components.ComponentCommand.handle><code>handle</code></a> method defined, the command will print a help message and exit.</p> </div> <h3 id=argument-groups>Argument groups<a class=headerlink href=#argument-groups title="Permanent link">¤</a></h3> <p>Arguments can be grouped using <a href=../../../reference/extension_commands#django_components.CommandArgGroup><code>CommandArgGroup</code></a> to provide better organization and help messages.</p> <p>Read more on <a href=https://docs.python.org/3/library/argparse.html#argument-groups>argparse argument groups</a>.</p> <div class=highlight><pre><span></span><code><a id=__codelineno-27-1 name=__codelineno-27-1 href=#__codelineno-27-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components</span><span class=w> </span><span class=kn>import</span> <span class=n>CommandArg</span><span class=p>,</span> <span class=n>CommandArgGroup</span><span class=p>,</span> <span class=n>ComponentCommand</span><span class=p>,</span> <span class=n>ComponentExtension</span>
|
|
<a id=__codelineno-27-2 name=__codelineno-27-2 href=#__codelineno-27-2></a>
|
|
<a id=__codelineno-27-3 name=__codelineno-27-3 href=#__codelineno-27-3></a><span class=k>class</span><span class=w> </span><span class=nc>HelloCommand</span><span class=p>(</span><span class=n>ComponentCommand</span><span class=p>):</span>
|
|
<a id=__codelineno-27-4 name=__codelineno-27-4 href=#__codelineno-27-4></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"hello"</span>
|
|
<a id=__codelineno-27-5 name=__codelineno-27-5 href=#__codelineno-27-5></a> <span class=n>help</span> <span class=o>=</span> <span class=s2>"Say hello"</span>
|
|
<a id=__codelineno-27-6 name=__codelineno-27-6 href=#__codelineno-27-6></a>
|
|
<a id=__codelineno-27-7 name=__codelineno-27-7 href=#__codelineno-27-7></a> <span class=c1># Argument parsing is managed by `argparse`.</span>
|
|
<a id=__codelineno-27-8 name=__codelineno-27-8 href=#__codelineno-27-8></a> <span class=n>arguments</span> <span class=o>=</span> <span class=p>[</span>
|
|
<a id=__codelineno-27-9 name=__codelineno-27-9 href=#__codelineno-27-9></a> <span class=c1># Positional argument</span>
|
|
<a id=__codelineno-27-10 name=__codelineno-27-10 href=#__codelineno-27-10></a> <span class=n>CommandArg</span><span class=p>(</span>
|
|
<a id=__codelineno-27-11 name=__codelineno-27-11 href=#__codelineno-27-11></a> <span class=n>name_or_flags</span><span class=o>=</span><span class=s2>"name"</span><span class=p>,</span>
|
|
<a id=__codelineno-27-12 name=__codelineno-27-12 href=#__codelineno-27-12></a> <span class=n>help</span><span class=o>=</span><span class=s2>"The name to say hello to"</span><span class=p>,</span>
|
|
<a id=__codelineno-27-13 name=__codelineno-27-13 href=#__codelineno-27-13></a> <span class=p>),</span>
|
|
<a id=__codelineno-27-14 name=__codelineno-27-14 href=#__codelineno-27-14></a> <span class=c1># Optional argument</span>
|
|
<a id=__codelineno-27-15 name=__codelineno-27-15 href=#__codelineno-27-15></a> <span class=n>CommandArg</span><span class=p>(</span>
|
|
<a id=__codelineno-27-16 name=__codelineno-27-16 href=#__codelineno-27-16></a> <span class=n>name_or_flags</span><span class=o>=</span><span class=p>[</span><span class=s2>"--shout"</span><span class=p>,</span> <span class=s2>"-s"</span><span class=p>],</span>
|
|
<a id=__codelineno-27-17 name=__codelineno-27-17 href=#__codelineno-27-17></a> <span class=n>action</span><span class=o>=</span><span class=s2>"store_true"</span><span class=p>,</span>
|
|
<a id=__codelineno-27-18 name=__codelineno-27-18 href=#__codelineno-27-18></a> <span class=n>help</span><span class=o>=</span><span class=s2>"Shout the hello"</span><span class=p>,</span>
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<a id=__codelineno-27-19 name=__codelineno-27-19 href=#__codelineno-27-19></a> <span class=p>),</span>
|
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<a id=__codelineno-27-20 name=__codelineno-27-20 href=#__codelineno-27-20></a> <span class=c1># When printing the command help message, `--bar` and `--baz`</span>
|
|
<a id=__codelineno-27-21 name=__codelineno-27-21 href=#__codelineno-27-21></a> <span class=c1># will be grouped under "group bar".</span>
|
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<a id=__codelineno-27-22 name=__codelineno-27-22 href=#__codelineno-27-22></a> <span class=n>CommandArgGroup</span><span class=p>(</span>
|
|
<a id=__codelineno-27-23 name=__codelineno-27-23 href=#__codelineno-27-23></a> <span class=n>title</span><span class=o>=</span><span class=s2>"group bar"</span><span class=p>,</span>
|
|
<a id=__codelineno-27-24 name=__codelineno-27-24 href=#__codelineno-27-24></a> <span class=n>description</span><span class=o>=</span><span class=s2>"Group description."</span><span class=p>,</span>
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<a id=__codelineno-27-25 name=__codelineno-27-25 href=#__codelineno-27-25></a> <span class=n>arguments</span><span class=o>=</span><span class=p>[</span>
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<a id=__codelineno-27-26 name=__codelineno-27-26 href=#__codelineno-27-26></a> <span class=n>CommandArg</span><span class=p>(</span>
|
|
<a id=__codelineno-27-27 name=__codelineno-27-27 href=#__codelineno-27-27></a> <span class=n>name_or_flags</span><span class=o>=</span><span class=s2>"--bar"</span><span class=p>,</span>
|
|
<a id=__codelineno-27-28 name=__codelineno-27-28 href=#__codelineno-27-28></a> <span class=n>help</span><span class=o>=</span><span class=s2>"Bar description."</span><span class=p>,</span>
|
|
<a id=__codelineno-27-29 name=__codelineno-27-29 href=#__codelineno-27-29></a> <span class=p>),</span>
|
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<a id=__codelineno-27-30 name=__codelineno-27-30 href=#__codelineno-27-30></a> <span class=n>CommandArg</span><span class=p>(</span>
|
|
<a id=__codelineno-27-31 name=__codelineno-27-31 href=#__codelineno-27-31></a> <span class=n>name_or_flags</span><span class=o>=</span><span class=s2>"--baz"</span><span class=p>,</span>
|
|
<a id=__codelineno-27-32 name=__codelineno-27-32 href=#__codelineno-27-32></a> <span class=n>help</span><span class=o>=</span><span class=s2>"Baz description."</span><span class=p>,</span>
|
|
<a id=__codelineno-27-33 name=__codelineno-27-33 href=#__codelineno-27-33></a> <span class=p>),</span>
|
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<a id=__codelineno-27-34 name=__codelineno-27-34 href=#__codelineno-27-34></a> <span class=p>],</span>
|
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<a id=__codelineno-27-35 name=__codelineno-27-35 href=#__codelineno-27-35></a> <span class=p>),</span>
|
|
<a id=__codelineno-27-36 name=__codelineno-27-36 href=#__codelineno-27-36></a> <span class=p>]</span>
|
|
<a id=__codelineno-27-37 name=__codelineno-27-37 href=#__codelineno-27-37></a>
|
|
<a id=__codelineno-27-38 name=__codelineno-27-38 href=#__codelineno-27-38></a> <span class=k>def</span><span class=w> </span><span class=nf>handle</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=n>name</span><span class=p>:</span> <span class=nb>str</span><span class=p>,</span> <span class=o>*</span><span class=n>args</span><span class=p>,</span> <span class=o>**</span><span class=n>kwargs</span><span class=p>):</span>
|
|
<a id=__codelineno-27-39 name=__codelineno-27-39 href=#__codelineno-27-39></a> <span class=n>shout</span> <span class=o>=</span> <span class=n>kwargs</span><span class=o>.</span><span class=n>get</span><span class=p>(</span><span class=s2>"shout"</span><span class=p>,</span> <span class=kc>False</span><span class=p>)</span>
|
|
<a id=__codelineno-27-40 name=__codelineno-27-40 href=#__codelineno-27-40></a> <span class=n>msg</span> <span class=o>=</span> <span class=sa>f</span><span class=s2>"Hello, </span><span class=si>{</span><span class=n>name</span><span class=si>}</span><span class=s2>!"</span>
|
|
<a id=__codelineno-27-41 name=__codelineno-27-41 href=#__codelineno-27-41></a> <span class=k>if</span> <span class=n>shout</span><span class=p>:</span>
|
|
<a id=__codelineno-27-42 name=__codelineno-27-42 href=#__codelineno-27-42></a> <span class=n>msg</span> <span class=o>=</span> <span class=n>msg</span><span class=o>.</span><span class=n>upper</span><span class=p>()</span>
|
|
<a id=__codelineno-27-43 name=__codelineno-27-43 href=#__codelineno-27-43></a> <span class=nb>print</span><span class=p>(</span><span class=n>msg</span><span class=p>)</span>
|
|
</code></pre></div> <h3 id=subcommands>Subcommands<a class=headerlink href=#subcommands title="Permanent link">¤</a></h3> <p>Extensions can define subcommands, allowing for more complex command structures.</p> <p>Subcommands are defined similarly to root commands, as subclasses of <a href=../../../reference/extension_commands#django_components.ComponentCommand><code>ComponentCommand</code></a> class.</p> <p>However, instead of defining the subcommands in the <a href=../../../reference/extension_commands#django_components.ComponentExtension.commands><code>commands</code></a> attribute of the extension, you define them in the <a href=../../../reference/extension_commands#django_components.ComponentCommand.subcommands><code>subcommands</code></a> attribute of the parent command:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-28-1 name=__codelineno-28-1 href=#__codelineno-28-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components</span><span class=w> </span><span class=kn>import</span> <span class=n>CommandArg</span><span class=p>,</span> <span class=n>CommandArgGroup</span><span class=p>,</span> <span class=n>ComponentCommand</span><span class=p>,</span> <span class=n>ComponentExtension</span>
|
|
<a id=__codelineno-28-2 name=__codelineno-28-2 href=#__codelineno-28-2></a>
|
|
<a id=__codelineno-28-3 name=__codelineno-28-3 href=#__codelineno-28-3></a><span class=k>class</span><span class=w> </span><span class=nc>ChildCommand</span><span class=p>(</span><span class=n>ComponentCommand</span><span class=p>):</span>
|
|
<a id=__codelineno-28-4 name=__codelineno-28-4 href=#__codelineno-28-4></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"child"</span>
|
|
<a id=__codelineno-28-5 name=__codelineno-28-5 href=#__codelineno-28-5></a> <span class=n>help</span> <span class=o>=</span> <span class=s2>"Child command"</span>
|
|
<a id=__codelineno-28-6 name=__codelineno-28-6 href=#__codelineno-28-6></a>
|
|
<a id=__codelineno-28-7 name=__codelineno-28-7 href=#__codelineno-28-7></a> <span class=k>def</span><span class=w> </span><span class=nf>handle</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=o>*</span><span class=n>args</span><span class=p>,</span> <span class=o>**</span><span class=n>kwargs</span><span class=p>):</span>
|
|
<a id=__codelineno-28-8 name=__codelineno-28-8 href=#__codelineno-28-8></a> <span class=nb>print</span><span class=p>(</span><span class=s2>"Child command"</span><span class=p>)</span>
|
|
<a id=__codelineno-28-9 name=__codelineno-28-9 href=#__codelineno-28-9></a>
|
|
<a id=__codelineno-28-10 name=__codelineno-28-10 href=#__codelineno-28-10></a><span class=k>class</span><span class=w> </span><span class=nc>ParentCommand</span><span class=p>(</span><span class=n>ComponentCommand</span><span class=p>):</span>
|
|
<a id=__codelineno-28-11 name=__codelineno-28-11 href=#__codelineno-28-11></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"parent"</span>
|
|
<a id=__codelineno-28-12 name=__codelineno-28-12 href=#__codelineno-28-12></a> <span class=n>help</span> <span class=o>=</span> <span class=s2>"Parent command"</span>
|
|
<a id=__codelineno-28-13 name=__codelineno-28-13 href=#__codelineno-28-13></a> <span class=n>subcommands</span> <span class=o>=</span> <span class=p>[</span>
|
|
<a id=__codelineno-28-14 name=__codelineno-28-14 href=#__codelineno-28-14></a> <span class=n>ChildCommand</span><span class=p>,</span>
|
|
<a id=__codelineno-28-15 name=__codelineno-28-15 href=#__codelineno-28-15></a> <span class=p>]</span>
|
|
<a id=__codelineno-28-16 name=__codelineno-28-16 href=#__codelineno-28-16></a>
|
|
<a id=__codelineno-28-17 name=__codelineno-28-17 href=#__codelineno-28-17></a> <span class=k>def</span><span class=w> </span><span class=nf>handle</span><span class=p>(</span><span class=bp>self</span><span class=p>,</span> <span class=o>*</span><span class=n>args</span><span class=p>,</span> <span class=o>**</span><span class=n>kwargs</span><span class=p>):</span>
|
|
<a id=__codelineno-28-18 name=__codelineno-28-18 href=#__codelineno-28-18></a> <span class=nb>print</span><span class=p>(</span><span class=s2>"Parent command"</span><span class=p>)</span>
|
|
</code></pre></div> <p>In this example, we can run two commands.</p> <p>Either the parent command:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-29-1 name=__codelineno-29-1 href=#__codelineno-29-1></a>python<span class=w> </span>manage.py<span class=w> </span>components<span class=w> </span>ext<span class=w> </span>run<span class=w> </span>parent
|
|
<a id=__codelineno-29-2 name=__codelineno-29-2 href=#__codelineno-29-2></a>>>><span class=w> </span>Parent<span class=w> </span><span class=nb>command</span>
|
|
</code></pre></div> <p>Or the child command:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-30-1 name=__codelineno-30-1 href=#__codelineno-30-1></a>python<span class=w> </span>manage.py<span class=w> </span>components<span class=w> </span>ext<span class=w> </span>run<span class=w> </span>parent<span class=w> </span>child
|
|
<a id=__codelineno-30-2 name=__codelineno-30-2 href=#__codelineno-30-2></a>>>><span class=w> </span>Child<span class=w> </span><span class=nb>command</span>
|
|
</code></pre></div> <div class="admonition warning"> <p class=admonition-title>Warning</p> <p>Subcommands are independent of the parent command. When a subcommand runs, the parent command is NOT executed.</p> <p>As such, if you want to pass arguments to both the parent and child commands, e.g.:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-31-1 name=__codelineno-31-1 href=#__codelineno-31-1></a>python<span class=w> </span>manage.py<span class=w> </span>components<span class=w> </span>ext<span class=w> </span>run<span class=w> </span>parent<span class=w> </span>--foo<span class=w> </span>child<span class=w> </span>--bar
|
|
</code></pre></div> <p>You should instead pass all the arguments to the subcommand:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-32-1 name=__codelineno-32-1 href=#__codelineno-32-1></a>python<span class=w> </span>manage.py<span class=w> </span>components<span class=w> </span>ext<span class=w> </span>run<span class=w> </span>parent<span class=w> </span>child<span class=w> </span>--foo<span class=w> </span>--bar
|
|
</code></pre></div> </div> <h3 id=help-message>Help message<a class=headerlink href=#help-message title="Permanent link">¤</a></h3> <p>By default, all commands will print their help message when run with the <code>--help</code> / <code>-h</code> flag.</p> <div class=highlight><pre><span></span><code><a id=__codelineno-33-1 name=__codelineno-33-1 href=#__codelineno-33-1></a>python<span class=w> </span>manage.py<span class=w> </span>components<span class=w> </span>ext<span class=w> </span>run<span class=w> </span>my_ext<span class=w> </span>--help
|
|
</code></pre></div> <p>The help message prints out all the arguments and options available for the command, as well as any subcommands.</p> <h3 id=testing-commands>Testing commands<a class=headerlink href=#testing-commands title="Permanent link">¤</a></h3> <p>Commands can be tested using Django's <a href=https://docs.djangoproject.com/en/5.2/ref/django-admin/#running-management-commands-from-your-code><code>call_command()</code></a> function, which allows you to simulate running the command in tests.</p> <div class=highlight><pre><span></span><code><a id=__codelineno-34-1 name=__codelineno-34-1 href=#__codelineno-34-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django.core.management</span><span class=w> </span><span class=kn>import</span> <span class=n>call_command</span>
|
|
<a id=__codelineno-34-2 name=__codelineno-34-2 href=#__codelineno-34-2></a>
|
|
<a id=__codelineno-34-3 name=__codelineno-34-3 href=#__codelineno-34-3></a><span class=n>call_command</span><span class=p>(</span><span class=s1>'components'</span><span class=p>,</span> <span class=s1>'ext'</span><span class=p>,</span> <span class=s1>'run'</span><span class=p>,</span> <span class=s1>'my_ext'</span><span class=p>,</span> <span class=s1>'hello'</span><span class=p>,</span> <span class=s1>'--name'</span><span class=p>,</span> <span class=s1>'John'</span><span class=p>)</span>
|
|
</code></pre></div> <p>To capture the output of the command, you can use the <a href=https://docs.python.org/3/library/io.html#io.StringIO><code>StringIO</code></a> module to redirect the output to a string:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-35-1 name=__codelineno-35-1 href=#__codelineno-35-1></a><span class=kn>from</span><span class=w> </span><span class=nn>io</span><span class=w> </span><span class=kn>import</span> <span class=n>StringIO</span>
|
|
<a id=__codelineno-35-2 name=__codelineno-35-2 href=#__codelineno-35-2></a>
|
|
<a id=__codelineno-35-3 name=__codelineno-35-3 href=#__codelineno-35-3></a><span class=n>out</span> <span class=o>=</span> <span class=n>StringIO</span><span class=p>()</span>
|
|
<a id=__codelineno-35-4 name=__codelineno-35-4 href=#__codelineno-35-4></a><span class=k>with</span> <span class=n>patch</span><span class=p>(</span><span class=s2>"sys.stdout"</span><span class=p>,</span> <span class=n>new</span><span class=o>=</span><span class=n>out</span><span class=p>):</span>
|
|
<a id=__codelineno-35-5 name=__codelineno-35-5 href=#__codelineno-35-5></a> <span class=n>call_command</span><span class=p>(</span><span class=s1>'components'</span><span class=p>,</span> <span class=s1>'ext'</span><span class=p>,</span> <span class=s1>'run'</span><span class=p>,</span> <span class=s1>'my_ext'</span><span class=p>,</span> <span class=s1>'hello'</span><span class=p>,</span> <span class=s1>'--name'</span><span class=p>,</span> <span class=s1>'John'</span><span class=p>)</span>
|
|
<a id=__codelineno-35-6 name=__codelineno-35-6 href=#__codelineno-35-6></a><span class=n>output</span> <span class=o>=</span> <span class=n>out</span><span class=o>.</span><span class=n>getvalue</span><span class=p>()</span>
|
|
</code></pre></div> <p>And to temporarily set the extensions, you can use the <a href=../../../reference/testing_api#djc_test><code>@djc_test</code></a> decorator.</p> <p>Thus, a full test example can then look like this:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-36-1 name=__codelineno-36-1 href=#__codelineno-36-1></a><span class=kn>from</span><span class=w> </span><span class=nn>io</span><span class=w> </span><span class=kn>import</span> <span class=n>StringIO</span>
|
|
<a id=__codelineno-36-2 name=__codelineno-36-2 href=#__codelineno-36-2></a><span class=kn>from</span><span class=w> </span><span class=nn>unittest.mock</span><span class=w> </span><span class=kn>import</span> <span class=n>patch</span>
|
|
<a id=__codelineno-36-3 name=__codelineno-36-3 href=#__codelineno-36-3></a>
|
|
<a id=__codelineno-36-4 name=__codelineno-36-4 href=#__codelineno-36-4></a><span class=kn>from</span><span class=w> </span><span class=nn>django.core.management</span><span class=w> </span><span class=kn>import</span> <span class=n>call_command</span>
|
|
<a id=__codelineno-36-5 name=__codelineno-36-5 href=#__codelineno-36-5></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components.testing</span><span class=w> </span><span class=kn>import</span> <span class=n>djc_test</span>
|
|
<a id=__codelineno-36-6 name=__codelineno-36-6 href=#__codelineno-36-6></a>
|
|
<a id=__codelineno-36-7 name=__codelineno-36-7 href=#__codelineno-36-7></a><span class=nd>@djc_test</span><span class=p>(</span>
|
|
<a id=__codelineno-36-8 name=__codelineno-36-8 href=#__codelineno-36-8></a> <span class=n>components_settings</span><span class=o>=</span><span class=p>{</span>
|
|
<a id=__codelineno-36-9 name=__codelineno-36-9 href=#__codelineno-36-9></a> <span class=s2>"extensions"</span><span class=p>:</span> <span class=p>[</span>
|
|
<a id=__codelineno-36-10 name=__codelineno-36-10 href=#__codelineno-36-10></a> <span class=s2>"my_app.extensions.MyExtension"</span><span class=p>,</span>
|
|
<a id=__codelineno-36-11 name=__codelineno-36-11 href=#__codelineno-36-11></a> <span class=p>],</span>
|
|
<a id=__codelineno-36-12 name=__codelineno-36-12 href=#__codelineno-36-12></a> <span class=p>},</span>
|
|
<a id=__codelineno-36-13 name=__codelineno-36-13 href=#__codelineno-36-13></a><span class=p>)</span>
|
|
<a id=__codelineno-36-14 name=__codelineno-36-14 href=#__codelineno-36-14></a><span class=k>def</span><span class=w> </span><span class=nf>test_hello_command</span><span class=p>(</span><span class=bp>self</span><span class=p>):</span>
|
|
<a id=__codelineno-36-15 name=__codelineno-36-15 href=#__codelineno-36-15></a> <span class=n>out</span> <span class=o>=</span> <span class=n>StringIO</span><span class=p>()</span>
|
|
<a id=__codelineno-36-16 name=__codelineno-36-16 href=#__codelineno-36-16></a> <span class=k>with</span> <span class=n>patch</span><span class=p>(</span><span class=s2>"sys.stdout"</span><span class=p>,</span> <span class=n>new</span><span class=o>=</span><span class=n>out</span><span class=p>):</span>
|
|
<a id=__codelineno-36-17 name=__codelineno-36-17 href=#__codelineno-36-17></a> <span class=n>call_command</span><span class=p>(</span><span class=s1>'components'</span><span class=p>,</span> <span class=s1>'ext'</span><span class=p>,</span> <span class=s1>'run'</span><span class=p>,</span> <span class=s1>'my_ext'</span><span class=p>,</span> <span class=s1>'hello'</span><span class=p>,</span> <span class=s1>'--name'</span><span class=p>,</span> <span class=s1>'John'</span><span class=p>)</span>
|
|
<a id=__codelineno-36-18 name=__codelineno-36-18 href=#__codelineno-36-18></a> <span class=n>output</span> <span class=o>=</span> <span class=n>out</span><span class=o>.</span><span class=n>getvalue</span><span class=p>()</span>
|
|
<a id=__codelineno-36-19 name=__codelineno-36-19 href=#__codelineno-36-19></a> <span class=k>assert</span> <span class=n>output</span> <span class=o>==</span> <span class=s2>"Hello, John!</span><span class=se>\n</span><span class=s2>"</span>
|
|
</code></pre></div> <h2 id=extension-urls>Extension URLs<a class=headerlink href=#extension-urls title="Permanent link">¤</a></h2> <p>Extensions can define custom views and endpoints that can be accessed through the Django application.</p> <p>To define URLs for an extension, set them in the <a href=../../../reference/api#django_components.ComponentExtension.urls><code>urls</code></a> attribute of your <a href=../../../reference/api#django_components.ComponentExtension><code>ComponentExtension</code></a> class. Each URL is defined using the <a href=../../../reference/extension_urls#django_components.URLRoute><code>URLRoute</code></a> class, which specifies the path, handler, and optional name for the route.</p> <p>Here's an example of how to define URLs within an extension:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-37-1 name=__codelineno-37-1 href=#__codelineno-37-1></a><span class=kn>from</span><span class=w> </span><span class=nn>django_components.extension</span><span class=w> </span><span class=kn>import</span> <span class=n>ComponentExtension</span><span class=p>,</span> <span class=n>URLRoute</span>
|
|
<a id=__codelineno-37-2 name=__codelineno-37-2 href=#__codelineno-37-2></a><span class=kn>from</span><span class=w> </span><span class=nn>django.http</span><span class=w> </span><span class=kn>import</span> <span class=n>HttpResponse</span>
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<a id=__codelineno-37-3 name=__codelineno-37-3 href=#__codelineno-37-3></a>
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<a id=__codelineno-37-4 name=__codelineno-37-4 href=#__codelineno-37-4></a><span class=k>def</span><span class=w> </span><span class=nf>my_view</span><span class=p>(</span><span class=n>request</span><span class=p>):</span>
|
|
<a id=__codelineno-37-5 name=__codelineno-37-5 href=#__codelineno-37-5></a> <span class=k>return</span> <span class=n>HttpResponse</span><span class=p>(</span><span class=s2>"Hello from my extension!"</span><span class=p>)</span>
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<a id=__codelineno-37-6 name=__codelineno-37-6 href=#__codelineno-37-6></a>
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<a id=__codelineno-37-7 name=__codelineno-37-7 href=#__codelineno-37-7></a><span class=k>class</span><span class=w> </span><span class=nc>MyExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
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<a id=__codelineno-37-8 name=__codelineno-37-8 href=#__codelineno-37-8></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"my_extension"</span>
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<a id=__codelineno-37-9 name=__codelineno-37-9 href=#__codelineno-37-9></a>
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<a id=__codelineno-37-10 name=__codelineno-37-10 href=#__codelineno-37-10></a> <span class=n>urls</span> <span class=o>=</span> <span class=p>[</span>
|
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<a id=__codelineno-37-11 name=__codelineno-37-11 href=#__codelineno-37-11></a> <span class=n>URLRoute</span><span class=p>(</span><span class=n>path</span><span class=o>=</span><span class=s2>"my-view/"</span><span class=p>,</span> <span class=n>handler</span><span class=o>=</span><span class=n>my_view</span><span class=p>,</span> <span class=n>name</span><span class=o>=</span><span class=s2>"my_view"</span><span class=p>),</span>
|
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<a id=__codelineno-37-12 name=__codelineno-37-12 href=#__codelineno-37-12></a> <span class=n>URLRoute</span><span class=p>(</span><span class=n>path</span><span class=o>=</span><span class=s2>"another-view/<int:id>/"</span><span class=p>,</span> <span class=n>handler</span><span class=o>=</span><span class=n>my_view</span><span class=p>,</span> <span class=n>name</span><span class=o>=</span><span class=s2>"another_view"</span><span class=p>),</span>
|
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<a id=__codelineno-37-13 name=__codelineno-37-13 href=#__codelineno-37-13></a> <span class=p>]</span>
|
|
</code></pre></div> <div class="admonition warning"> <p class=admonition-title>Warning</p> <p>The <a href=../../../reference/extension_urls#django_components.URLRoute><code>URLRoute</code></a> objects are different from objects created with Django's <a href=https://docs.djangoproject.com/en/5.2/ref/urls/#path><code>django.urls.path()</code></a>. Do NOT use <code>URLRoute</code> objects in Django's <a href=https://docs.djangoproject.com/en/5.2/topics/http/urls/#example><code>urlpatterns</code></a> and vice versa!</p> <p>django-components uses a custom <a href=../../../reference/extension_urls#django_components.URLRoute><code>URLRoute</code></a> class to define framework-agnostic routing rules.</p> <p>As of v0.131, <code>URLRoute</code> objects are directly converted to Django's <code>URLPattern</code> and <code>URLResolver</code> objects.</p> </div> <h3 id=url-paths>URL paths<a class=headerlink href=#url-paths title="Permanent link">¤</a></h3> <p>The URLs defined in an extension are available under the path</p> <div class=highlight><pre><span></span><code><a id=__codelineno-38-1 name=__codelineno-38-1 href=#__codelineno-38-1></a>/components/ext/<extension_name>/
|
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</code></pre></div> <p>For example, if you have defined a URL with the path <code>my-view/<str:name>/</code> in an extension named <code>my_extension</code>, it can be accessed at:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-39-1 name=__codelineno-39-1 href=#__codelineno-39-1></a>/components/ext/my_extension/my-view/john/
|
|
</code></pre></div> <h3 id=nested-urls>Nested URLs<a class=headerlink href=#nested-urls title="Permanent link">¤</a></h3> <p>Extensions can also define nested URLs to allow for more complex routing structures.</p> <p>To define nested URLs, set the <a href=../../../reference/extension_urls#django_components.URLRoute.children><code>children</code></a> attribute of the <a href=../../../reference/extension_urls#django_components.URLRoute><code>URLRoute</code></a> object to a list of child <a href=../../../reference/extension_urls#django_components.URLRoute><code>URLRoute</code></a> objects:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-40-1 name=__codelineno-40-1 href=#__codelineno-40-1></a><span class=k>class</span><span class=w> </span><span class=nc>MyExtension</span><span class=p>(</span><span class=n>ComponentExtension</span><span class=p>):</span>
|
|
<a id=__codelineno-40-2 name=__codelineno-40-2 href=#__codelineno-40-2></a> <span class=n>name</span> <span class=o>=</span> <span class=s2>"my_extension"</span>
|
|
<a id=__codelineno-40-3 name=__codelineno-40-3 href=#__codelineno-40-3></a>
|
|
<a id=__codelineno-40-4 name=__codelineno-40-4 href=#__codelineno-40-4></a> <span class=n>urls</span> <span class=o>=</span> <span class=p>[</span>
|
|
<a id=__codelineno-40-5 name=__codelineno-40-5 href=#__codelineno-40-5></a> <span class=n>URLRoute</span><span class=p>(</span>
|
|
<a id=__codelineno-40-6 name=__codelineno-40-6 href=#__codelineno-40-6></a> <span class=n>path</span><span class=o>=</span><span class=s2>"parent/"</span><span class=p>,</span>
|
|
<a id=__codelineno-40-7 name=__codelineno-40-7 href=#__codelineno-40-7></a> <span class=n>name</span><span class=o>=</span><span class=s2>"parent_view"</span><span class=p>,</span>
|
|
<a id=__codelineno-40-8 name=__codelineno-40-8 href=#__codelineno-40-8></a> <span class=n>children</span><span class=o>=</span><span class=p>[</span>
|
|
<a id=__codelineno-40-9 name=__codelineno-40-9 href=#__codelineno-40-9></a> <span class=n>URLRoute</span><span class=p>(</span><span class=n>path</span><span class=o>=</span><span class=s2>"child/<str:name>/"</span><span class=p>,</span> <span class=n>handler</span><span class=o>=</span><span class=n>my_view</span><span class=p>,</span> <span class=n>name</span><span class=o>=</span><span class=s2>"child_view"</span><span class=p>),</span>
|
|
<a id=__codelineno-40-10 name=__codelineno-40-10 href=#__codelineno-40-10></a> <span class=p>],</span>
|
|
<a id=__codelineno-40-11 name=__codelineno-40-11 href=#__codelineno-40-11></a> <span class=p>),</span>
|
|
<a id=__codelineno-40-12 name=__codelineno-40-12 href=#__codelineno-40-12></a> <span class=p>]</span>
|
|
</code></pre></div> <p>In this example, the URL</p> <div class=highlight><pre><span></span><code><a id=__codelineno-41-1 name=__codelineno-41-1 href=#__codelineno-41-1></a>/components/ext/my_extension/parent/child/john/
|
|
</code></pre></div> <p>would call the <code>my_view</code> handler with the parameter <code>name</code> set to <code>"John"</code>.</p> <h3 id=extra-url-data>Extra URL data<a class=headerlink href=#extra-url-data title="Permanent link">¤</a></h3> <p>The <a href=../../../reference/extension_urls#django_components.URLRoute><code>URLRoute</code></a> class is framework-agnostic, so that extensions could be used with non-Django frameworks in the future.</p> <p>However, that means that there may be some extra fields that Django's <a href=https://docs.djangoproject.com/en/5.2/ref/urls/#path><code>django.urls.path()</code></a> accepts, but which are not defined on the <code>URLRoute</code> object.</p> <p>To address this, the <a href=../../../reference/extension_urls#django_components.URLRoute><code>URLRoute</code></a> object has an <a href=../../../reference/extension_urls#django_components.URLRoute.extra><code>extra</code></a> attribute, which is a dictionary that can be used to pass any extra kwargs to <code>django.urls.path()</code>:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-42-1 name=__codelineno-42-1 href=#__codelineno-42-1></a><span class=n>URLRoute</span><span class=p>(</span>
|
|
<a id=__codelineno-42-2 name=__codelineno-42-2 href=#__codelineno-42-2></a> <span class=n>path</span><span class=o>=</span><span class=s2>"my-view/<str:name>/"</span><span class=p>,</span>
|
|
<a id=__codelineno-42-3 name=__codelineno-42-3 href=#__codelineno-42-3></a> <span class=n>handler</span><span class=o>=</span><span class=n>my_view</span><span class=p>,</span>
|
|
<a id=__codelineno-42-4 name=__codelineno-42-4 href=#__codelineno-42-4></a> <span class=n>name</span><span class=o>=</span><span class=s2>"my_view"</span><span class=p>,</span>
|
|
<a id=__codelineno-42-5 name=__codelineno-42-5 href=#__codelineno-42-5></a> <span class=n>extra</span><span class=o>=</span><span class=p>{</span><span class=s2>"kwargs"</span><span class=p>:</span> <span class=p>{</span><span class=s2>"foo"</span><span class=p>:</span> <span class=s2>"bar"</span><span class=p>}</span> <span class=p>},</span>
|
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<a id=__codelineno-42-6 name=__codelineno-42-6 href=#__codelineno-42-6></a><span class=p>)</span>
|
|
</code></pre></div> <p>Is the same as:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-43-1 name=__codelineno-43-1 href=#__codelineno-43-1></a><span class=n>django</span><span class=o>.</span><span class=n>urls</span><span class=o>.</span><span class=n>path</span><span class=p>(</span>
|
|
<a id=__codelineno-43-2 name=__codelineno-43-2 href=#__codelineno-43-2></a> <span class=s2>"my-view/<str:name>/"</span><span class=p>,</span>
|
|
<a id=__codelineno-43-3 name=__codelineno-43-3 href=#__codelineno-43-3></a> <span class=n>view</span><span class=o>=</span><span class=n>my_view</span><span class=p>,</span>
|
|
<a id=__codelineno-43-4 name=__codelineno-43-4 href=#__codelineno-43-4></a> <span class=n>name</span><span class=o>=</span><span class=s2>"my_view"</span><span class=p>,</span>
|
|
<a id=__codelineno-43-5 name=__codelineno-43-5 href=#__codelineno-43-5></a> <span class=n>kwargs</span><span class=o>=</span><span class=p>{</span><span class=s2>"foo"</span><span class=p>:</span> <span class=s2>"bar"</span><span class=p>},</span>
|
|
<a id=__codelineno-43-6 name=__codelineno-43-6 href=#__codelineno-43-6></a><span class=p>)</span>
|
|
</code></pre></div> <p>because <code>URLRoute</code> is converted to Django's route like so:</p> <div class=highlight><pre><span></span><code><a id=__codelineno-44-1 name=__codelineno-44-1 href=#__codelineno-44-1></a><span class=n>django</span><span class=o>.</span><span class=n>urls</span><span class=o>.</span><span class=n>path</span><span class=p>(</span>
|
|
<a id=__codelineno-44-2 name=__codelineno-44-2 href=#__codelineno-44-2></a> <span class=n>route</span><span class=o>.</span><span class=n>path</span><span class=p>,</span>
|
|
<a id=__codelineno-44-3 name=__codelineno-44-3 href=#__codelineno-44-3></a> <span class=n>view</span><span class=o>=</span><span class=n>route</span><span class=o>.</span><span class=n>handler</span><span class=p>,</span>
|
|
<a id=__codelineno-44-4 name=__codelineno-44-4 href=#__codelineno-44-4></a> <span class=n>name</span><span class=o>=</span><span class=n>route</span><span class=o>.</span><span class=n>name</span><span class=p>,</span>
|
|
<a id=__codelineno-44-5 name=__codelineno-44-5 href=#__codelineno-44-5></a> <span class=o>**</span><span class=n>route</span><span class=o>.</span><span class=n>extra</span><span class=p>,</span>
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<a id=__codelineno-44-6 name=__codelineno-44-6 href=#__codelineno-44-6></a><span class=p>)</span>
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</code></pre></div> <aside class=md-source-file> <span class=md-source-file__fact> <span class=md-icon title="Last update"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M21 13.1c-.1 0-.3.1-.4.2l-1 1 2.1 2.1 1-1c.2-.2.2-.6 0-.8l-1.3-1.3c-.1-.1-.2-.2-.4-.2m-1.9 1.8-6.1 6V23h2.1l6.1-6.1zM12.5 7v5.2l4 2.4-1 1L11 13V7zM11 21.9c-5.1-.5-9-4.8-9-9.9C2 6.5 6.5 2 12 2c5.3 0 9.6 4.1 10 9.3-.3-.1-.6-.2-1-.2s-.7.1-1 .2C19.6 7.2 16.2 4 12 4c-4.4 0-8 3.6-8 8 0 4.1 3.1 7.5 7.1 7.9l-.1.2z"/></svg> </span> <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-timeago" title="May 31, 2025 09:22:45 UTC"><span class=timeago datetime=2025-05-31T09:22:45+00:00 locale=en></span></span><span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-iso_date" title="May 31, 2025 09:22:45 UTC">2025-05-31</span> </span> <span class=md-source-file__fact> <span class=md-icon title=Contributors> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 4a4 4 0 0 1 4 4 4 4 0 0 1-4 4 4 4 0 0 1-4-4 4 4 0 0 1 4-4m0 10c4.42 0 8 1.79 8 4v2H4v-2c0-2.21 3.58-4 8-4"/></svg> </span> <nav> <a href=mailto:juraj.oravec.josefson@gmail.com>Juro Oravec</a> </nav> </span> </aside> </article> </div> <script>var tabs=__md_get("__tabs");if(Array.isArray(tabs))e:for(var set of document.querySelectorAll(".tabbed-set")){var labels=set.querySelector(".tabbed-labels");for(var tab of tabs)for(var label of labels.getElementsByTagName("label"))if(label.innerText.trim()===tab){var input=document.getElementById(label.htmlFor);input.checked=!0;continue e}}</script> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> <button type=button class="md-top md-icon" data-md-component=top hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8z"/></svg> Back to top </button> </main> <footer class=md-footer> <nav class="md-footer__inner md-grid" aria-label=Footer> <a href=../tag_formatters/ class="md-footer__link md-footer__link--prev" aria-label="Previous: Tag formatters"> <div class="md-footer__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11z"/></svg> </div> <div class=md-footer__title> <span class=md-footer__direction> Previous </span> <div class=md-ellipsis> Tag formatters </div> </div> </a> <a href=../testing/ class="md-footer__link md-footer__link--next" aria-label="Next: Testing"> <div class=md-footer__title> <span class=md-footer__direction> Next </span> <div class=md-ellipsis> Testing </div> </div> <div class="md-footer__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11z"/></svg> </div> </a> </nav> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class=md-copyright> Made with <a href=https://squidfunk.github.io/mkdocs-material/ target=_blank rel=noopener> Material for MkDocs </a> </div> <div class=md-social> <a href=https://github.com/django-components/django-components target=_blank rel=noopener title=github.com class=md-social__link> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 512 512"><!-- Font Awesome Free 7.0.0 by @fontawesome - 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