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@ -1,32 +0,0 @@
// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
// https://github.com/microsoft/vscode-dev-containers/tree/v0.245.0/containers/python-3
{
// Uncomment to run Python 3.13 or other specific version
// "image": "mcr.microsoft.com/devcontainers/python:3.13-bullseye",
// Configure tool-specific properties.
"customizations": {
// Configure properties specific to VS Code.
"vscode": {
// Set *default* container specific settings.json values on container create.
"settings": {
"python.defaultInterpreterPath": "/usr/local/bin/python",
"python.linting.enabled": true
},
// Add the IDs of extensions you want installed when the container is created.
"extensions": [
"ms-python.python",
"ms-python.vscode-pylance",
"ms-python.vscode-python-envs",
"jurooravec.python-inline-source-2"
]
}
}
// Use 'forwardPorts' to make a list of ports inside the container available locally.
// "forwardPorts": [],
// Use 'postCreateCommand' to run commands after the container is created.
//"postCreateCommand": ""
}

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@ -1,77 +1,5 @@
# Release notes
## v0.141.2
#### Fix
- Fix bug where JS and CSS were missing when `{% component %}` tag was inside `{% include %}` tag ([#1296](https://github.com/django-components/django-components/issues/1296))
## v0.141.1
#### Fix
- Components' JS and CSS scripts (e.g. from `Component.js` or `Component.js_file`) are now cached at class creation time.
This means that when you now restart the server while having a page opened in the browser,
the JS / CSS files are immediately available.
Previously, the JS/CSS were cached only after the components were rendered. So you had to reload
the page to trigger the rendering, in order to make the JS/CSS files available.
- Fix the default cache for JS / CSS scripts to be unbounded.
Previously, the default cache for the JS/CSS scripts (`LocMemCache`) was accidentally limited to 300 entries (~150 components).
- Do not send `template_rendered` signal when rendering a component with no template. ([#1277](https://github.com/django-components/django-components/issues/1277))
## v0.141.0
#### Feat
- New extension hooks `on_template_loaded`, `on_js_loaded`, `on_css_loaded`, and `on_template_compiled`
The first 3 hooks are called when Component's template / JS / CSS is loaded as a string.
The `on_template_compiled` hook is called when Component's template is compiled to a Template.
The `on_xx_loaded` hooks can modify the content by returning the new value.
```py
class MyExtension(ComponentExtension):
def on_template_loaded(self, ctx: OnTemplateLoadedContext) -> Optional[str]:
return ctx.content + "<!-- Hello! -->"
def on_js_loaded(self, ctx: OnJsLoadedContext) -> Optional[str]:
return ctx.content + "// Hello!"
def on_css_loaded(self, ctx: OnCssLoadedContext) -> Optional[str]:
return ctx.content + "/* Hello! */"
```
See all [Extension hooks](https://django-components.github.io/django-components/0.141.0/reference/extension_hooks/).
#### Fix
- Subclassing - Previously, if a parent component defined `Component.template` or `Component.template_file`, it's subclass would use the same `Template` instance.
This could lead to unexpected behavior, where a change to the template of the subclass would also change the template of the parent class.
Now, each subclass has it's own `Template` instance, and changes to the template of the subclass do not affect the template of the parent class.
- Fix Django failing to restart due to "TypeError: 'Dynamic' object is not iterable" ([#1232](https://github.com/django-components/django-components/issues/1232))
- Fix bug when error formatting failed when error value was not a string.
#### Refactor
- `components ext run` CLI command now allows to call only those extensions that actually have subcommands.
## v0.140.1
#### Fix
- Fix typo preventing benchmarking ([#1235](https://github.com/django-components/django-components/pull/1235))
## 🚨📢 v0.140.0
⚠️ Major release ⚠️ - Please test thoroughly before / after upgrading.
@ -136,7 +64,7 @@ Summary:
- `"append"`
- `"ignore"`
See [Dependencies rendering](https://django-components.github.io/django-components/0.140.1/concepts/advanced/rendering_js_css/) for more info.
See [Dependencies rendering](https://django-components.github.io/django-components/0.140/concepts/advanced/rendering_js_css/) for more info.
**Typing**
@ -160,8 +88,8 @@ Summary:
text: str
```
See [Migrating from generics to class attributes](https://django-components.github.io/django-components/0.140/concepts/fundamentals/typing_and_validation/#migrating-from-generics-to-class-attributes) for more info.
See [Migrating from generics to class attributes](https://django-components.github.io/django-components/0.140.1/concepts/fundamentals/typing_and_validation/#migrating-from-generics-to-class-attributes) for more info.
- Removed `EmptyTuple` and `EmptyDict` types. Instead, there is now a single `Empty` type.
```py
@ -1049,7 +977,7 @@ Summary:
- Rendered HTML is left as-is. You can still process it with a different strategy later with `render_dependencies()`.
- Used for inserting rendered HTML into other components.
See [Dependencies rendering](https://django-components.github.io/django-components/0.140.1/concepts/advanced/rendering_js_css/) for more info.
See [Dependencies rendering](https://django-components.github.io/django-components/0.140/concepts/advanced/rendering_js_css/) for more info.
- New `Component.args`, `Component.kwargs`, `Component.slots` attributes available on the component class itself.
@ -1129,7 +1057,7 @@ Summary:
- Modify the rendered output after it has been rendered
- Handle errors
See [on_render](https://django-components.github.io/django-components/0.140.1/concepts/advanced/hooks/#on_render) for more info.
See [on_render](https://django-components.github.io/django-components/0.140/concepts/advanced/hooks/#on_render) for more info.
- `get_component_url()` now optionally accepts `query` and `fragment` arguments.
@ -1197,7 +1125,7 @@ Summary:
- `ComponentNode` instance if the slot was created as a default slot from a `{% component %}` tag.
- `None` if the slot was created from a string, function, or `Slot` instance.
See [Slot metadata](https://django-components.github.io/django-components/0.140.1/concepts/fundamentals/slots/#slot-metadata).
See [Slot metadata](https://django-components.github.io/django-components/0.140/concepts/fundamentals/slots/#slot-metadata).
- `{% fill %}` tag now accepts `body` kwarg to pass a Slot instance to fill.
@ -1296,13 +1224,13 @@ Summary:
)
```
Read more on [Component caching](https://django-components.github.io/django-components/0.140.1/concepts/advanced/component_caching/).
Read more on [Component caching](https://django-components.github.io/django-components/0.140/concepts/advanced/component_caching/).
- New extension hook `on_slot_rendered()`
This hook is called when a slot is rendered, and allows you to access and/or modify the rendered result.
This is used by the ["debug highlight" feature](https://django-components.github.io/django-components/0.140.1/guides/other/troubleshooting/#component-and-slot-highlighting).
This is used by the ["debug highlight" feature](https://django-components.github.io/django-components/0.140/guides/other/troubleshooting/#component-and-slot-highlighting).
To modify the rendered result, return the new value:
@ -1314,7 +1242,7 @@ Summary:
If you don't want to modify the rendered result, return `None`.
See all [Extension hooks](https://django-components.github.io/django-components/0.140.1/reference/extension_hooks/).
See all [Extension hooks](https://django-components.github.io/django-components/0.140/reference/extension_hooks/).
- When creating extensions, the previous syntax with `ComponentExtension.ExtensionClass` was causing
Mypy errors, because Mypy doesn't allow using class attributes as bases:

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@ -24,9 +24,8 @@ A component in django-components can be as simple as a Django template and Pytho
```py
# components/calendar/calendar.py
from django_components import Component, register
from django_components import Component
@register("calendar")
class Calendar(Component):
template_file = "calendar.html"
```
@ -57,9 +56,8 @@ document.querySelector(".calendar").onclick = () => {
```py
# components/calendar/calendar.py
from django_components import Component, register
from django_components import Component
@register("calendar")
class Calendar(Component):
template_file = "calendar.html"
js_file = "calendar.js"
@ -554,7 +552,7 @@ to see the latest features and fixes.
One of our goals with `django-components` is to make it easy to share components between projects. If you have a set of components that you think would be useful to others, please open a pull request to add them to the list below.
- [django-htmx-components](https://github.com/iwanalabs/django-htmx-components): A set of components for use with [htmx](https://htmx.org/).
- [django-htmx-components](https://github.com/iwanalabs/django-htmx-components): A set of components for use with [htmx](https://htmx.org/). Try out the [live demo](https://dhc.iwanalabs.com/).
- [djc-heroicons](https://pypi.org/project/djc-heroicons/): A component that renders icons from [Heroicons.com](https://heroicons.com/).

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[[1662, 54203904.32644733], [1672, 54377977.05567385], [1687, 54531587.401090905], [1691, 54414373.37457081], [1709, 54655941.05401974], [1726, 54668354.35558938], [1766, 55133687.30603648], [1770, 55072492.873806104], [1776, 55115246.19008138], [1801, 55131593.83007953]]

View file

@ -1 +1 @@
[[1662, 54880185.34368702], [1672, 54845439.84705003], [1687, 55287805.57238104], [1691, 54974463.04630629], [1709, 55404533.06087942], [1726, 55316304.695168346], [1766, 55588847.36277981], [1770, 55711653.6193069], [1776, 55635967.849223286], [1801, 55857133.82825839], [1937, 56076247.273349956], [1960, 55971522.87008585], [1996, 56434628.542863145], [2029, 56782847.85226863]]
[[1662, 54880185.34368702], [1672, 54845439.84705003], [1687, 55287805.57238104], [1691, 54974463.04630629], [1709, 55404533.06087942], [1726, 55316304.695168346], [1766, 55588847.36277981], [1770, 55711653.6193069], [1776, 55635967.849223286], [1801, 55857133.82825839]]

View file

@ -1 +1 @@
[[1662, 44185599.95253766], [1672, 44048383.99999999], [1687, 44312575.95267366], [1691, 44177407.95252886], [1709, 44312575.95267366], [1726, 44314624.0], [1766, 44316671.95267803], [1770, 44318719.81072088], [1776, 44273651.87380721], [1801, 44453888.0], [1937, 44744704.0], [1960, 44838912.00000001], [1996, 44969983.99999999], [2029, 44847103.812950954]]
[[1662, 44185599.95253766], [1672, 44048383.99999999], [1687, 44312575.95267366], [1691, 44177407.95252886], [1709, 44312575.95267366], [1726, 44314624.0], [1766, 44316671.95267803], [1770, 44318719.81072088], [1776, 44273651.87380721], [1801, 44453888.0]]

View file

@ -1 +1 @@
[[1662, 44187648.0], [1672, 44052479.99999999], [1687, 44312575.95267366], [1691, 44179455.99999999], [1709, 44312575.95267366], [1726, 44314624.0], [1766, 44312575.95267366], [1770, 44316671.95267803], [1776, 44437504.0], [1801, 44449792.0], [1937, 44744704.0], [1960, 44900304.17220587], [1996, 44974080.0], [2029, 44984319.953380376]]
[[1662, 44187648.0], [1672, 44052479.99999999], [1687, 44312575.95267366], [1691, 44179455.99999999], [1709, 44312575.95267366], [1726, 44314624.0], [1766, 44312575.95267366], [1770, 44316671.95267803], [1776, 44437504.0], [1801, 44449792.0]]

View file

@ -1 +1 @@
[[1662, 0.2582970915627115], [1672, 0.2609375697890752], [1687, 0.2585333418012986], [1691, 0.2605245701455466], [1709, 0.26615604836262874], [1726, 0.25886008645727265], [1766, 0.2656287982807661], [1770, 0.2675580766089799], [1776, 0.2644825926606367], [1801, 0.26856188100049755], [1937, 0.2700264321932048], [1960, 0.2711075492537049], [1996, 0.28189867248766043], [2029, 0.29481258851469266]]
[[1662, 0.2582970915627115], [1672, 0.2609375697890752], [1687, 0.2585333418012986], [1691, 0.2605245701455466], [1709, 0.26615604836262874], [1726, 0.25886008645727265], [1766, 0.2656287982807661], [1770, 0.2675580766089799], [1776, 0.2644825926606367], [1801, 0.26856188100049755]]

View file

@ -1 +1 @@
[[1662, 0.144605946222714], [1672, 0.14711376894836906], [1687, 0.14434992731884352], [1691, 0.14638104217028877], [1709, 0.1508107336447194], [1726, 0.14754149544768042], [1766, 0.15304096778650703], [1770, 0.1536390943522132], [1776, 0.15209353551720362], [1801, 0.15356938175949056], [1937, 0.15690951925702573], [1960, 0.15706997937098616], [1996, 0.16911758076913888], [2029, 0.17625829701058932]]
[[1662, 0.144605946222714], [1672, 0.14711376894836906], [1687, 0.14434992731884352], [1691, 0.14638104217028877], [1709, 0.1508107336447194], [1726, 0.14754149544768042], [1766, 0.15304096778650703], [1770, 0.1536390943522132], [1776, 0.15209353551720362], [1801, 0.15356938175949056]]

View file

@ -1 +1 @@
[[1662, 0.004713162243622524], [1672, 0.004881543738505435], [1687, 0.004732102104161917], [1691, 0.00488069732533968], [1709, 0.004839972328668506], [1726, 0.004672193982353972], [1766, 0.004766899700580667], [1770, 0.004898703707479391], [1776, 0.004767500868992566], [1801, 0.004852423669122516], [1937, 0.004924660359490744], [1960, 0.004810360631940079], [1996, 0.004998322871483767], [2029, 0.004880129761791827]]
[[1662, 0.004713162243622524], [1672, 0.004881543738505435], [1687, 0.004732102104161917], [1691, 0.00488069732533968], [1709, 0.004839972328668506], [1726, 0.004672193982353972], [1766, 0.004766899700580667], [1770, 0.004898703707479391], [1776, 0.004767500868992566], [1801, 0.004852423669122516]]

View file

@ -1 +1 @@
[[1662, 0.0005386441936864901], [1672, 0.0005576844109755481], [1687, 0.0005459711425132094], [1691, 0.0005519974567116778], [1709, 0.0005728459938648165], [1726, 0.0005428729701593198], [1766, 0.0005836611719634209], [1770, 0.0005880105852110292], [1776, 0.0005786218553806627], [1801, 0.0005751723828193878], [1937, 0.0005916876201898046], [1960, 0.000594381138510516], [1996, 0.0006163559143381376], [2029, 0.0006119567036345985]]
[[1662, 0.0005386441936864901], [1672, 0.0005576844109755481], [1687, 0.0005459711425132094], [1691, 0.0005519974567116778], [1709, 0.0005728459938648165], [1726, 0.0005428729701593198], [1766, 0.0005836611719634209], [1770, 0.0005880105852110292], [1776, 0.0005786218553806627], [1801, 0.0005751723828193878]]

View file

@ -1 +1 @@
[[1662, 0.21383238744211777], [1672, 0.22221634409189991], [1687, 0.21410434591886193], [1691, 0.2203609725843055], [1709, 0.22018038637622225], [1726, 0.2149156309515977], [1766, 0.2198640308272821], [1770, 0.22362192103085216], [1776, 0.21863830924562072], [1801, 0.22295218072522197], [1937, 0.22573752762853083], [1960, 0.22581596577171012], [1996, 0.22995210340856065], [2029, 0.2285231418957897]]
[[1662, 0.21383238744211777], [1672, 0.22221634409189991], [1687, 0.21410434591886193], [1691, 0.2203609725843055], [1709, 0.22018038637622225], [1726, 0.2149156309515977], [1766, 0.2198640308272821], [1770, 0.22362192103085216], [1776, 0.21863830924562072], [1801, 0.22295218072522197]]

File diff suppressed because one or more lines are too long

View file

@ -1,4 +1,4 @@
{
"asv-version": "0.6.4",
"timestamp": 1753049912703
"timestamp": 1745143636166
}

View file

@ -1 +1 @@
{"regressions": [["Components vs Django.timeraw_render_lg_subsequent('django')", "graphs/branch-master/django-5.1/djc-core-html-parser/machine-ci-linux/python-3.13/Components vs Django.timeraw_render_lg_subsequent.json", {}, 0, 0.04362213900003553, 0.03327357099999517, [[1691, 1709, 0.03327357099999517, 0.03723830100000214], [1801, 1937, 0.03723830100000214, 0.04362213900003553]]]]}
{"regressions": [["Components vs Django.timeraw_render_lg_subsequent('django')", "graphs/branch-master/django-5.1/djc-core-html-parser/machine-ci-linux/python-3.13/Components vs Django.timeraw_render_lg_subsequent.json", {}, 0, 0.03723830100000214, 0.03327357099999517, [[1691, 1709, 0.03327357099999517, 0.03723830100000214]]], ["Components vs Django.timeraw_render_sm_subsequent('django')", "graphs/branch-master/django-5.1/djc-core-html-parser/machine-ci-linux/python-3.13/Components vs Django.timeraw_render_sm_subsequent.json", {}, 0, 0.00011641800000461444, 0.0001005780000014056, [[1691, 1709, 0.0001005780000014056, 0.00011641800000461444]]]]}

View file

@ -1,8 +1,8 @@
<?xml version='1.0' encoding='utf-8'?>
<feed xmlns="http://www.w3.org/2005/Atom"><id>tag:django-components.asv,1970-01-01:/cddbdcca8b398afd301fbfc73cc4d51103d4e3059c0e6b938d4c467ad3d1aa25</id><author><name>Airspeed Velocity</name></author><title xml:lang="en">django-components performance regressions</title><updated>2025-06-04T22:41:21Z</updated><entry><id>tag:django-components.asv,2025-06-04:/38b868a38890eb5bccfd51983abf3a15cedf2846ef6cf2452e941122dbde2bde</id><title xml:lang="en">17.14% Components vs Django.timeraw_render_lg_subsequent('django')</title><updated>2025-06-04T22:41:21Z</updated><link href="index.html#Components vs Django.timeraw_render_lg_subsequent?p-renderer=%27django%27&amp;commits=4c909486069f3c3c8ee7915239174f820f081da4-7b24b86f4a836c697acba926d9d6602afa45418d" /><content xml:lang="en" type="html">&lt;a href="index.html#Components vs Django.timeraw_render_lg_subsequent?p-renderer=%27django%27&amp;commits=4c909486069f3c3c8ee7915239174f820f081da4-7b24b86f4a836c697acba926d9d6602afa45418d"&gt;17.14% regression&lt;/a&gt; on 2025-06-04 22:35:21 in commits &lt;a href="#4c909486069f3c3c8ee7915239174f820f081da4"&gt;4c909486...7b24b86f&lt;/a&gt;.&lt;br&gt;
New value: 43.6ms, old value: 37.2ms.&lt;br&gt;
Latest value: 43.6ms (31.10% worse
than best value 33.3ms).</content></entry><entry><id>tag:django-components.asv,2025-03-31:/7a13128cbc4d175ca09ebda40e8a303789275bd84b00a5d496cfa08a26ad2f8b</id><title xml:lang="en">11.92% Components vs Django.timeraw_render_lg_subsequent('django')</title><updated>2025-03-31T14:16:53Z</updated><link href="index.html#Components vs Django.timeraw_render_lg_subsequent?p-renderer=%27django%27&amp;commits=42818ad6ffb47bd650d8a379b84c3d48394f9f77-a6455d70f6c28ddbd4be8e58902f6cbc101e5ff3" /><content xml:lang="en" type="html">&lt;a href="index.html#Components vs Django.timeraw_render_lg_subsequent?p-renderer=%27django%27&amp;commits=42818ad6ffb47bd650d8a379b84c3d48394f9f77-a6455d70f6c28ddbd4be8e58902f6cbc101e5ff3"&gt;11.92% regression&lt;/a&gt; on 2025-03-31 14:10:42 in commits &lt;a href="#42818ad6ffb47bd650d8a379b84c3d48394f9f77"&gt;42818ad6...a6455d70&lt;/a&gt;.&lt;br&gt;
<feed xmlns="http://www.w3.org/2005/Atom"><id>tag:django-components.asv,1970-01-01:/cddbdcca8b398afd301fbfc73cc4d51103d4e3059c0e6b938d4c467ad3d1aa25</id><author><name>Airspeed Velocity</name></author><title xml:lang="en">django-components performance regressions</title><updated>2025-03-31T14:17:04Z</updated><entry><id>tag:django-components.asv,2025-03-31:/3489e338e3aeb103ea646e0f8aee41043fa61c99d14c7b57d874c9ebc1c79b22</id><title xml:lang="en">15.75% Components vs Django.timeraw_render_sm_subsequent('django')</title><updated>2025-03-31T14:17:04Z</updated><link href="index.html#Components vs Django.timeraw_render_sm_subsequent?p-renderer=%27django%27&amp;commits=42818ad6ffb47bd650d8a379b84c3d48394f9f77-a6455d70f6c28ddbd4be8e58902f6cbc101e5ff3" /><content xml:lang="en" type="html">&lt;a href="index.html#Components vs Django.timeraw_render_sm_subsequent?p-renderer=%27django%27&amp;commits=42818ad6ffb47bd650d8a379b84c3d48394f9f77-a6455d70f6c28ddbd4be8e58902f6cbc101e5ff3"&gt;15.75% regression&lt;/a&gt; on 2025-03-31 14:10:42 in commits &lt;a href="#42818ad6ffb47bd650d8a379b84c3d48394f9f77"&gt;42818ad6...a6455d70&lt;/a&gt;.&lt;br&gt;
New value: 116μs, old value: 101μs.&lt;br&gt;
Latest value: 116μs (15.75% worse
than best value 101μs).</content></entry><entry><id>tag:django-components.asv,2025-03-31:/7a13128cbc4d175ca09ebda40e8a303789275bd84b00a5d496cfa08a26ad2f8b</id><title xml:lang="en">11.92% Components vs Django.timeraw_render_lg_subsequent('django')</title><updated>2025-03-31T14:16:53Z</updated><link href="index.html#Components vs Django.timeraw_render_lg_subsequent?p-renderer=%27django%27&amp;commits=42818ad6ffb47bd650d8a379b84c3d48394f9f77-a6455d70f6c28ddbd4be8e58902f6cbc101e5ff3" /><content xml:lang="en" type="html">&lt;a href="index.html#Components vs Django.timeraw_render_lg_subsequent?p-renderer=%27django%27&amp;commits=42818ad6ffb47bd650d8a379b84c3d48394f9f77-a6455d70f6c28ddbd4be8e58902f6cbc101e5ff3"&gt;11.92% regression&lt;/a&gt; on 2025-03-31 14:10:42 in commits &lt;a href="#42818ad6ffb47bd650d8a379b84c3d48394f9f77"&gt;42818ad6...a6455d70&lt;/a&gt;.&lt;br&gt;
New value: 37.2ms, old value: 33.3ms.&lt;br&gt;
Latest value: 43.6ms (31.10% worse
Latest value: 37.2ms (11.92% worse
than best value 33.3ms).</content></entry></feed>

View file

@ -134,7 +134,7 @@ Which will render as:
{% endcomponent %}
```
### 4. Wait, there's a bug
### 5. Wait, there's a bug
There is a mistake in our code! `2024-12-13` is Friday, so that's fine. But if we updated
the to `2024-12-14`, which is Saturday, our template from previous step would render this:
@ -289,8 +289,3 @@ each time:
Moreover, slots are treated as part of the template - for example the CSS scoping (work in progress)
is applied to the slot content too.
---
So far we've rendered components using template tag. [Next, lets explore other ways to render components ➡️]
(./rendering_components.md)

View file

@ -55,7 +55,7 @@ by calling `{% load component_tags %}` inside the template.
like `{% component "calendar" / %}`.
`ComponentRegistries` also make it possible to group and share components as standalone packages.
[Learn more here](../../concepts/advanced/component_libraries).
[Learn more here](../../concepts/advanced/authoring_component_libraries).
!!! note

View file

@ -220,6 +220,10 @@ the parametrized version of the component:
</div>
```
---
Next, you will learn [how to use slots give your components even more flexibility ➡️](./adding_slots.md)
### 5. Add defaults
In our example, we've set the `extra_class` to default to `"text-blue"` by setting it in the
@ -254,7 +258,3 @@ class Calendar(Component):
"extra_class": kwargs["extra_class"], # <--- changed
}
```
---
Next, you will learn [how to use slots give your components even more flexibility ➡️](./adding_slots.md)

View file

@ -160,7 +160,7 @@ def my_view(request):
response_class = MyCustomResponse
```
### 4. Rendering slots
### Rendering slots
Slots content are automatically escaped by default to prevent XSS attacks.
@ -203,7 +203,7 @@ Calendar.render(
[`format_html`](https://docs.djangoproject.com/en/5.2/ref/utils/#django.utils.html.format_html)
and [`mark_safe`](https://docs.djangoproject.com/en/5.2/ref/utils/#django.utils.safestring.mark_safe).
### 5. Component views and URLs
### Component views and URLs
For web applications, it's common to define endpoints that serve HTML content (AKA views).

View file

@ -35,9 +35,8 @@ document.querySelector(".calendar").onclick = function () {
```
```py title="calendar.py"
from django_components import Component, register
from django_components import Component
@register("calendar")
class Calendar(Component):
template_file = "calendar.html"
js_file = "calendar.js"

View file

@ -7,9 +7,9 @@ Please, before opening a new discussion, [check if similar discussion wasn't ope
## Community examples
One of our goals with `django-components` is to make it easy to share components between projects
([see how to package components](../concepts/advanced/component_libraries.md)).
([see how to package components](../concepts/advanced/authoring_component_libraries.md)).
If you have a set of components that you think would be useful to others, please open a pull request to add them to the list below.
- [django-htmx-components](https://github.com/iwanalabs/django-htmx-components): A set of components for use with [htmx](https://htmx.org/).
- [django-htmx-components](https://github.com/iwanalabs/django-htmx-components): A set of components for use with [htmx](https://htmx.org/). Try out the [live demo](https://dhc.iwanalabs.com/).
- [djc-heroicons](https://pypi.org/project/djc-heroicons/): A component that renders icons from [Heroicons.com](https://heroicons.com/).

View file

@ -18,9 +18,8 @@ A component in django-components can be as simple as a Django template and Pytho
```
```py title="components/calendar/calendar.py"
from django_components import Component, register
from django_components import Component
@register("calendar")
class Calendar(Component):
template_file = "calendar.html"
```
@ -47,9 +46,8 @@ document.querySelector(".calendar").onclick = () => {
```
```py title="components/calendar/calendar.py"
from django_components import Component, register
from django_components import Component
@register("calendar")
class Calendar(Component):
template_file = "calendar.html"
js_file = "calendar.js"

View file

@ -1,16 +1,16 @@
# `.nav.yml` is provided by https://lukasgeiter.github.io/mkdocs-awesome-nav
nav:
- API: api.md
- CLI commands: commands.md
- Commands: commands.md
- Components: components.md
- Exceptions: exceptions.md
- Extension commands: extension_commands.md
- Extension hooks: extension_hooks.md
- Extension commands API: extension_commands.md
- Extension URLs API: extension_urls.md
- Extension URLs: extension_urls.md
- Settings: settings.md
- Signals: signals.md
- Tag formatters: tag_formatters.md
- Template tags: template_tags.md
- Template variables: template_variables.md
- Template vars: template_vars.md
- URLs: urls.md
- Testing API: testing_api.md

View file

@ -1,6 +1,6 @@
<!-- Autogenerated by reference.py -->
# Extension commands API
# Extension commands
Overview of all classes, functions, and other objects related to defining extension commands.

View file

@ -148,42 +148,6 @@ name | type | description
`name` | `str` | The name the component was registered under
`registry` | [`ComponentRegistry`](../api#django_components.ComponentRegistry) | The registry the component was unregistered from
::: django_components.extension.ComponentExtension.on_css_loaded
options:
heading_level: 3
show_root_heading: true
show_signature: true
separate_signature: true
show_symbol_type_heading: false
show_symbol_type_toc: false
show_if_no_docstring: true
show_labels: false
**Available data:**
name | type | description
--|--|--
`component_cls` | [`Type[Component]`](../api#django_components.Component) | The Component class whose CSS was loaded
`content` | `str` | The CSS content (string)
::: django_components.extension.ComponentExtension.on_js_loaded
options:
heading_level: 3
show_root_heading: true
show_signature: true
separate_signature: true
show_symbol_type_heading: false
show_symbol_type_toc: false
show_if_no_docstring: true
show_labels: false
**Available data:**
name | type | description
--|--|--
`component_cls` | [`Type[Component]`](../api#django_components.Component) | The Component class whose JS was loaded
`content` | `str` | The JS content (string)
::: django_components.extension.ComponentExtension.on_registry_created
options:
heading_level: 3
@ -243,44 +207,6 @@ name | type | description
`slot_name` | `str` | The name of the `{% slot %}` tag
`slot_node` | `SlotNode` | The node instance of the `{% slot %}` tag
::: django_components.extension.ComponentExtension.on_template_compiled
options:
heading_level: 3
show_root_heading: true
show_signature: true
separate_signature: true
show_symbol_type_heading: false
show_symbol_type_toc: false
show_if_no_docstring: true
show_labels: false
**Available data:**
name | type | description
--|--|--
`component_cls` | [`Type[Component]`](../api#django_components.Component) | The Component class whose template was loaded
`template` | `django.template.base.Template` | The compiled template object
::: django_components.extension.ComponentExtension.on_template_loaded
options:
heading_level: 3
show_root_heading: true
show_signature: true
separate_signature: true
show_symbol_type_heading: false
show_symbol_type_toc: false
show_if_no_docstring: true
show_labels: false
**Available data:**
name | type | description
--|--|--
`component_cls` | [`Type[Component]`](../api#django_components.Component) | The Component class whose template was loaded
`content` | `str` | The template string
`name` | `Optional[str]` | The name of the template
`origin` | `Optional[django.template.base.Origin]` | The origin of the template
## Objects
::: django_components.extension.OnComponentClassCreatedContext

View file

@ -1,6 +1,6 @@
<!-- Autogenerated by reference.py -->
# Extension URLs API
# Extension URLs
Overview of all classes, functions, and other objects related to defining extension URLs.

View file

@ -67,7 +67,7 @@ If you insert this tag multiple times, ALL JS scripts will be duplicately insert
<a href="https://github.com/django-components/django-components/tree/master/src/django_components/templatetags/component_tags.py#L3799" target="_blank">See source code</a>
<a href="https://github.com/django-components/django-components/tree/master/src/django_components/templatetags/component_tags.py#L3796" target="_blank">See source code</a>

View file

@ -44,7 +44,6 @@ from pathlib import Path
from textwrap import dedent
from typing import Any, Dict, List, NamedTuple, Optional, Sequence, Tuple, Type, Union
from django.conf import settings
from django.core.management.base import BaseCommand
from django.urls import URLPattern, URLResolver
@ -466,13 +465,7 @@ def gen_reference_commands():
# Add link to source code
module_abs_path = import_module(cmd_def_cls.__module__).__file__
module_rel_path = Path(module_abs_path).relative_to(Path.cwd()).as_posix() # type: ignore[arg-type]
# NOTE: Raises `OSError` if the file is not found.
try:
obj_lineno = inspect.findsource(cmd_def_cls)[1]
except Exception:
obj_lineno = None
obj_lineno = inspect.findsource(cmd_def_cls)[1]
source_code_link = _format_source_code_html(module_rel_path, obj_lineno)
# NOTE: For the commands we have to generate the markdown entries ourselves,
@ -531,7 +524,7 @@ def gen_reference_commands():
)
def gen_reference_template_tags():
def gen_reference_templatetags():
"""
Generate documentation for all Django template tags defined by django-components,
like `{% slot %}`, `{% component %}`, etc.
@ -544,7 +537,7 @@ def gen_reference_template_tags():
]
preface = "<!-- Autogenerated by reference.py -->\n\n"
preface += (root / "docs/templates/reference_template_tags.md").read_text()
preface += (root / "docs/templates/reference_templatetags.md").read_text()
out_file = root / "docs/reference/template_tags.md"
out_file.parent.mkdir(parents=True, exist_ok=True)
@ -592,14 +585,14 @@ def gen_reference_template_tags():
)
def gen_reference_template_variables():
def gen_reference_templatevars():
"""
Generate documentation for all variables that are available inside the component templates
under the `{{ component_vars }}` variable, as defined by `ComponentVars`.
"""
preface = "<!-- Autogenerated by reference.py -->\n\n"
preface += (root / "docs/templates/reference_template_variables.md").read_text()
out_file = root / "docs/reference/template_variables.md"
preface += (root / "docs/templates/reference_templatevars.md").read_text()
out_file = root / "docs/reference/template_vars.md"
out_file.parent.mkdir(parents=True, exist_ok=True)
with out_file.open("w", encoding="utf-8") as f:
@ -1106,13 +1099,6 @@ def _is_extension_url_api(obj: Any) -> bool:
def gen_reference():
"""The entrypoint to generate all the reference documentation."""
# Set up Django settings so we can import `extensions`
if not settings.configured:
settings.configure(
BASE_DIR=Path(__file__).parent.parent.parent,
)
gen_reference_api()
gen_reference_exceptions()
gen_reference_components()
@ -1120,8 +1106,8 @@ def gen_reference():
gen_reference_tagformatters()
gen_reference_urls()
gen_reference_commands()
gen_reference_template_tags()
gen_reference_template_variables()
gen_reference_templatetags()
gen_reference_templatevars()
gen_reference_signals()
gen_reference_testing_api()
gen_reference_extension_hooks()

View file

@ -1,4 +1,4 @@
# Extension commands API
# Extension commands
Overview of all classes, functions, and other objects related to defining extension commands.

View file

@ -1,4 +1,4 @@
# Extension URLs API
# Extension URLs
Overview of all classes, functions, and other objects related to defining extension URLs.

View file

@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
[project]
name = "django_components"
version = "0.141.2"
version = "0.140.0"
requires-python = ">=3.8, <4.0"
description = "A way to create simple reusable template components in Django."
keywords = ["django", "components", "css", "js", "html"]

View file

@ -7,7 +7,7 @@ whitenoise
asv
# NOTE: pin virtualenv to <20.31 until asv fixes integration
# See https://github.com/airspeed-velocity/asv/issues/1484
virtualenv==20.32.0
virtualenv==20.31.2
pytest-asyncio
pytest-django
typing-extensions>=4.12.2

View file

@ -104,7 +104,7 @@ urllib3==2.2.3
# via
# requests
# types-requests
virtualenv==20.32.0
virtualenv==20.31.2
# via
# -r requirements-ci.in
# asv

View file

@ -20,6 +20,6 @@ pygments-djc
asv
# NOTE: pin virtualenv to <20.31 until asv fixes integration
# See https://github.com/airspeed-velocity/asv/issues/1484
virtualenv==20.32.0
virtualenv==20.31.2
typing-extensions>=4.12.2
pathspec

View file

@ -30,7 +30,7 @@ colorama==0.4.6
# via tox
distlib==0.3.9
# via virtualenv
django==4.2.23
django==4.2.21
# via -r requirements-dev.in
djc-core-html-parser==1.0.2
# via -r requirements-dev.in
@ -40,7 +40,7 @@ filelock==3.16.1
# via
# tox
# virtualenv
flake8==7.3.0
flake8==7.2.0
# via
# -r requirements-dev.in
# flake8-pyproject
@ -64,7 +64,7 @@ json5==0.10.0
# via asv
mccabe==0.7.0
# via flake8
mypy==1.17.0
mypy==1.16.0
# via -r requirements-dev.in
mypy-extensions==1.0.0
# via
@ -97,11 +97,11 @@ pluggy==1.5.0
# tox
pre-commit==4.2.0
# via -r requirements-dev.in
pycodestyle==2.14.0
pycodestyle==2.13.0
# via flake8
pyee==12.0.0
# via playwright
pyflakes==3.4.0
pyflakes==3.3.2
# via flake8
pygments==2.19.1
# via
@ -163,7 +163,7 @@ urllib3==2.2.3
# via
# requests
# types-requests
virtualenv==20.32.0
virtualenv==20.31.2
# via
# -r requirements-dev.in
# asv

View file

@ -24,7 +24,7 @@
# - djc-core-html-parser>=1.0
#
asgiref==3.9.1
asgiref==3.8.1
# via django
babel==2.17.0
# via
@ -32,13 +32,13 @@ babel==2.17.0
# mkdocs-material
black==25.1.0
# via hatch.envs.docs
bracex==2.6
bracex==2.5.post1
# via wcmatch
cairocffi==1.7.1
# via cairosvg
cairosvg==2.8.2
# via mkdocs-material
certifi==2025.7.14
certifi==2025.4.26
# via requests
cffi==1.17.1
# via cairocffi
@ -58,7 +58,7 @@ cssselect2==0.8.0
# via cairosvg
defusedxml==0.7.1
# via cairosvg
django==4.2.23
django==4.2.21
# via hatch.envs.docs
djc-core-html-parser==1.0.2
# via hatch.envs.docs
@ -66,9 +66,9 @@ ghp-import==2.1.0
# via mkdocs
gitdb==4.0.12
# via gitpython
gitpython==3.1.45
gitpython==3.1.44
# via mkdocs-git-revision-date-localized-plugin
griffe==1.9.0
griffe==1.7.3
# via mkdocstrings-python
htmlmin2==0.1.13
# via mkdocs-minify-plugin
@ -86,14 +86,14 @@ jinja2==3.1.6
# mkdocstrings
jsmin==3.0.1
# via mkdocs-minify-plugin
markdown==3.8.2
markdown==3.8
# via
# mkdocs
# mkdocs-autorefs
# mkdocs-material
# mkdocstrings
# pymdown-extensions
markdown-exec==1.11.0
markdown-exec==1.10.3
# via hatch.envs.docs
markupsafe==3.0.2
# via
@ -134,13 +134,13 @@ mkdocs-get-deps==0.2.0
# via
# mkdocs
# mkdocstrings
mkdocs-git-authors-plugin==0.10.0
mkdocs-git-authors-plugin==0.9.5
# via hatch.envs.docs
mkdocs-git-revision-date-localized-plugin==1.4.7
# via hatch.envs.docs
mkdocs-include-markdown-plugin==7.1.6
mkdocs-include-markdown-plugin==7.1.5
# via hatch.envs.docs
mkdocs-material==9.6.15
mkdocs-material==9.6.14
# via hatch.envs.docs
mkdocs-material-extensions==1.3.1
# via mkdocs-material
@ -148,11 +148,11 @@ mkdocs-minify-plugin==0.8.0
# via hatch.envs.docs
mkdocs-redirects==1.2.2
# via hatch.envs.docs
mkdocstrings==0.30.0
mkdocstrings==0.29.1
# via
# hatch.envs.docs
# mkdocstrings-python
mkdocstrings-python==1.16.12
mkdocstrings-python==1.16.11
# via hatch.envs.docs
mypy-extensions==1.1.0
# via black
@ -166,7 +166,7 @@ pathspec==0.12.1
# via
# black
# mkdocs
pillow==11.3.0
pillow==11.2.1
# via
# cairosvg
# mkdocs-material
@ -176,14 +176,14 @@ platformdirs==4.3.8
# mkdocs-get-deps
pycparser==2.22
# via cffi
pygments==2.19.2
pygments==2.19.1
# via
# hatch.envs.docs
# mkdocs-material
# pygments-djc
pygments-djc==1.0.1
# via hatch.envs.docs
pymdown-extensions==10.16.1
pymdown-extensions==10.15
# via
# hatch.envs.docs
# markdown-exec
@ -208,7 +208,7 @@ pyyaml-env-tag==1.1
# mkdocs
regex==2024.11.6
# via mkdocs-material
requests==2.32.4
requests==2.32.3
# via mkdocs-material
six==1.17.0
# via python-dateutil
@ -220,17 +220,17 @@ tinycss2==1.4.0
# via
# cairosvg
# cssselect2
urllib3==2.5.0
urllib3==2.4.0
# via requests
verspec==0.1.0
# via mike
watchdog==6.0.0
# via mkdocs
wcmatch==10.1
wcmatch==10.0
# via mkdocs-include-markdown-plugin
webencodings==0.5.1
# via
# cssselect2
# tinycss2
zipp==3.23.0
zipp==3.22.0
# via importlib-metadata

View file

@ -746,8 +746,8 @@ defaults = ComponentsSettings(
#
# Settings are loaded from Django settings only once, at `apps.py` in `ready()`.
class InternalSettings:
def __init__(self) -> None:
self._settings: Optional[ComponentsSettings] = None
def __init__(self, settings: Optional[Dict[str, Any]] = None):
self._settings = ComponentsSettings(**settings) if settings else defaults
def _load_settings(self) -> None:
data = getattr(settings, "COMPONENTS", {})
@ -786,11 +786,6 @@ class InternalSettings:
tag_formatter=default(components_settings.tag_formatter, defaults.tag_formatter), # type: ignore[arg-type]
)
def _get_settings(self) -> ComponentsSettings:
if self._settings is None:
self._load_settings()
return cast(ComponentsSettings, self._settings)
def _prepare_extensions(self, new_settings: ComponentsSettings) -> List["ComponentExtension"]:
extensions: Sequence[Union[Type["ComponentExtension"], str]] = default(
new_settings.extensions, cast(List[str], defaults.extensions)
@ -800,7 +795,6 @@ class InternalSettings:
from django_components.extensions.cache import CacheExtension
from django_components.extensions.debug_highlight import DebugHighlightExtension
from django_components.extensions.defaults import DefaultsExtension
from django_components.extensions.dependencies import DependenciesExtension
from django_components.extensions.view import ViewExtension
extensions = cast(
@ -808,7 +802,6 @@ class InternalSettings:
[
CacheExtension,
DefaultsExtension,
DependenciesExtension,
ViewExtension,
DebugHighlightExtension,
],
@ -860,73 +853,70 @@ class InternalSettings:
return raw_value
# TODO REMOVE THE PROPERTIES BELOW? THEY NO LONGER SERVE ANY PURPOSE
@property
def AUTODISCOVER(self) -> bool:
return self._get_settings().autodiscover # type: ignore[return-value]
return self._settings.autodiscover # type: ignore[return-value]
@property
def CACHE(self) -> Optional[str]:
return self._get_settings().cache
return self._settings.cache
@property
def DIRS(self) -> Sequence[Union[str, PathLike, Tuple[str, str], Tuple[str, PathLike]]]:
return self._get_settings().dirs # type: ignore[return-value]
return self._settings.dirs # type: ignore[return-value]
@property
def APP_DIRS(self) -> Sequence[str]:
return self._get_settings().app_dirs # type: ignore[return-value]
return self._settings.app_dirs # type: ignore[return-value]
@property
def DEBUG_HIGHLIGHT_COMPONENTS(self) -> bool:
return self._get_settings().debug_highlight_components # type: ignore[return-value]
return self._settings.debug_highlight_components # type: ignore[return-value]
@property
def DEBUG_HIGHLIGHT_SLOTS(self) -> bool:
return self._get_settings().debug_highlight_slots # type: ignore[return-value]
return self._settings.debug_highlight_slots # type: ignore[return-value]
@property
def DYNAMIC_COMPONENT_NAME(self) -> str:
return self._get_settings().dynamic_component_name # type: ignore[return-value]
return self._settings.dynamic_component_name # type: ignore[return-value]
@property
def LIBRARIES(self) -> List[str]:
return self._get_settings().libraries # type: ignore[return-value]
return self._settings.libraries # type: ignore[return-value]
@property
def EXTENSIONS(self) -> List["ComponentExtension"]:
return self._get_settings().extensions # type: ignore[return-value]
@property
def EXTENSIONS_DEFAULTS(self) -> Dict[str, Any]:
return self._get_settings().extensions_defaults # type: ignore[return-value]
return self._settings.extensions # type: ignore[return-value]
@property
def MULTILINE_TAGS(self) -> bool:
return self._get_settings().multiline_tags # type: ignore[return-value]
return self._settings.multiline_tags # type: ignore[return-value]
@property
def RELOAD_ON_FILE_CHANGE(self) -> bool:
return self._get_settings().reload_on_file_change # type: ignore[return-value]
return self._settings.reload_on_file_change # type: ignore[return-value]
@property
def TEMPLATE_CACHE_SIZE(self) -> int:
return self._get_settings().template_cache_size # type: ignore[return-value]
return self._settings.template_cache_size # type: ignore[return-value]
@property
def STATIC_FILES_ALLOWED(self) -> Sequence[Union[str, re.Pattern]]:
return self._get_settings().static_files_allowed # type: ignore[return-value]
return self._settings.static_files_allowed # type: ignore[return-value]
@property
def STATIC_FILES_FORBIDDEN(self) -> Sequence[Union[str, re.Pattern]]:
return self._get_settings().static_files_forbidden # type: ignore[return-value]
return self._settings.static_files_forbidden # type: ignore[return-value]
@property
def CONTEXT_BEHAVIOR(self) -> ContextBehavior:
return ContextBehavior(self._get_settings().context_behavior)
return ContextBehavior(self._settings.context_behavior)
@property
def TAG_FORMATTER(self) -> Union["TagFormatterABC", str]:
return self._get_settings().tag_formatter # type: ignore[return-value]
return self._settings.tag_formatter # type: ignore[return-value]
app_settings = InternalSettings()

View file

@ -4,7 +4,6 @@ from typing import Any
from django.apps import AppConfig
from django.template import Template
from django.template.loader_tags import IncludeNode
from django.utils.autoreload import file_changed, trigger_reload
@ -19,13 +18,14 @@ class ComponentsConfig(AppConfig):
from django_components.component_registry import registry
from django_components.components.dynamic import DynamicComponent
from django_components.extension import extensions
from django_components.util.django_monkeypatch import monkeypatch_include_node, monkeypatch_template_cls
from django_components.util.django_monkeypatch import monkeypatch_template_cls
app_settings._load_settings()
# NOTE: This monkeypatch is applied here, before Django processes any requests.
# To make django-components work with django-debug-toolbar-template-profiler
# See https://github.com/django-components/django-components/discussions/819
monkeypatch_template_cls(Template)
monkeypatch_include_node(IncludeNode)
# Import modules set in `COMPONENTS.libraries` setting
import_libraries()

View file

@ -1,4 +1,3 @@
import sys
from typing import Optional
from django.core.cache import BaseCache, caches
@ -37,14 +36,9 @@ def get_component_media_cache() -> BaseCache:
component_media_cache = LocMemCache(
"django-components-media",
{
# No max size nor timeout
# NOTE: Implementation of `BaseCache` coerces the `MAX_ENTRIES` value
# to `int()` so we use exact max size instead of `inf` or `None`.
# See https://github.com/django/django/blob/94ebcf8366d62f6360851b40e9c4dfe3f71d202f/django/core/cache/backends/base.py#L73 # noqa: E501
"TIMEOUT": None,
"OPTIONS": {
"MAX_ENTRIES": sys.maxsize,
},
"TIMEOUT": None, # No timeout
"MAX_ENTRIES": None, # No max size
"CULL_FREQUENCY": 3,
},
)

View file

@ -19,11 +19,8 @@ from django_components.util.command import ComponentCommand
def _gen_subcommands() -> List[Type[ComponentCommand]]:
commands: List[Type[ComponentCommand]] = []
for extension in extensions.extensions:
if not extension.commands:
continue
ExtCommand = type(
"ExtRunSubcommand_" + extension.name,
"ExtCommand",
(ComponentCommand,),
{
"name": extension.name,

View file

@ -32,7 +32,7 @@ from django_components.component_media import ComponentMediaInput, ComponentMedi
from django_components.component_registry import ComponentRegistry
from django_components.component_registry import registry as registry_
from django_components.constants import COMP_ID_PREFIX
from django_components.context import _COMPONENT_CONTEXT_KEY, COMPONENT_IS_NESTED_KEY, make_isolated_context_copy
from django_components.context import _COMPONENT_CONTEXT_KEY, make_isolated_context_copy
from django_components.dependencies import (
DependenciesStrategy,
cache_component_css,
@ -2277,7 +2277,7 @@ class Component(metaclass=ComponentMeta):
deps_strategy = cast(DependenciesStrategy, default(deps_strategy, "document"))
self.id = default(id, _gen_component_id, factory=True) # type: ignore[arg-type]
self.id = default(id, _gen_component_id, factory=True)
self.name = _get_component_name(self.__class__, registered_name)
self.registered_name: Optional[str] = registered_name
self.args = default(args, [])
@ -2314,6 +2314,9 @@ class Component(metaclass=ComponentMeta):
cls.class_id = hash_comp_cls(cls)
comp_cls_id_mapping[cls.class_id] = cls
# Make sure that subclassed component will store it's own template, not the parent's.
cls._template = None
ALL_COMPONENTS.append(cached_ref(cls)) # type: ignore[arg-type]
extensions._init_component_class(cls)
extensions.on_component_class_created(OnComponentClassCreatedContext(cls))
@ -3486,12 +3489,11 @@ class Component(metaclass=ComponentMeta):
)
)
# Cache component's JS and CSS scripts, in case they have been evicted from the cache.
cache_component_js(comp_cls, force=False)
cache_component_css(comp_cls, force=False)
# Create JS/CSS scripts that will load the JS/CSS variables into the page.
# Process Component's JS and CSS
cache_component_js(comp_cls)
js_input_hash = cache_component_js_vars(comp_cls, js_data) if js_data else None
cache_component_css(comp_cls)
css_input_hash = cache_component_css_vars(comp_cls, css_data) if css_data else None
#############################################################################
@ -3515,14 +3517,14 @@ class Component(metaclass=ComponentMeta):
# Then we can simply apply `template_data` to the context in the same layer
# where we apply `context_processor_data` and `component_vars`.
with prepare_component_template(component, template_data) as template:
# Set `_DJC_COMPONENT_IS_NESTED` based on whether we're currently INSIDE
# Set `Template._djc_is_component_nested` based on whether we're currently INSIDE
# the `{% extends %}` tag.
# Part of fix for https://github.com/django-components/django-components/issues/508
# See django_monkeypatch.py
if template is not None:
comp_is_nested = bool(context.render_context.get(BLOCK_CONTEXT_KEY)) # type: ignore[union-attr]
else:
comp_is_nested = False
template._djc_is_component_nested = bool(
context.render_context.get(BLOCK_CONTEXT_KEY) # type: ignore[union-attr]
)
# Capture the template name so we can print better error messages (currently used in slots)
component_ctx.template_name = template.name if template else None
@ -3533,7 +3535,6 @@ class Component(metaclass=ComponentMeta):
**component.context_processors_data,
# Private context fields
_COMPONENT_CONTEXT_KEY: render_id,
COMPONENT_IS_NESTED_KEY: comp_is_nested,
# NOTE: Public API for variables accessible from within a component's template
# See https://github.com/django-components/django-components/issues/280#issuecomment-2081180940
"component_vars": ComponentVars(
@ -3671,7 +3672,7 @@ class Component(metaclass=ComponentMeta):
# ```
def _gen_component_renderer(
self,
template: Optional[Template],
template: Template,
context: Context,
component_path: List[str],
css_input_hash: Optional[str],
@ -3696,8 +3697,7 @@ class Component(metaclass=ComponentMeta):
component.on_render_before(context, template)
# Emit signal that the template is about to be rendered
if template is not None:
template_rendered.send(sender=template, template=template, context=context)
template_rendered.send(sender=template, template=template, context=context)
# Get the component's HTML
# To access the *final* output (with all its children rendered) from within `Component.on_render()`,

View file

@ -27,12 +27,10 @@ from weakref import WeakKeyDictionary
from django.contrib.staticfiles import finders
from django.core.exceptions import ImproperlyConfigured
from django.forms.widgets import Media as MediaCls
from django.template import Template
from django.utils.safestring import SafeData
from typing_extensions import TypeGuard
from django_components.extension import OnCssLoadedContext, OnJsLoadedContext, extensions
from django_components.template import ensure_unique_template, load_component_template
from django_components.template import load_component_template
from django_components.util.loader import get_component_dirs, resolve_file
from django_components.util.logger import logger
from django_components.util.misc import flatten, get_import_path, get_module_info, is_glob
@ -45,7 +43,7 @@ T = TypeVar("T")
# These are all the attributes that are handled by ComponentMedia and lazily-resolved
COMP_MEDIA_LAZY_ATTRS = ("media", "template", "template_file", "js", "js_file", "css", "css_file", "_template")
COMP_MEDIA_LAZY_ATTRS = ("media", "template", "template_file", "js", "js_file", "css", "css_file")
# Sentinel value to indicate that a media attribute is not set.
@ -269,8 +267,6 @@ class ComponentMedia:
js_file: Union[str, Unset, None] = UNSET
css: Union[str, Unset, None] = UNSET
css_file: Union[str, Unset, None] = UNSET
# Template instance that was loaded for this component
_template: Union[Template, Unset, None] = UNSET
def __post_init__(self) -> None:
for inlined_attr in ("template", "js", "css"):
@ -303,7 +299,6 @@ class ComponentMedia:
def reset(self) -> None:
self.__dict__.update(self._original.__dict__)
self.resolved = False
self.resolved_relative_files = False
# This metaclass is all about one thing - lazily resolving the media files.
@ -492,10 +487,6 @@ def _get_comp_cls_media(comp_cls: Type["Component"]) -> Any:
if curr_cls in media_cache:
continue
comp_media: Optional[ComponentMedia] = getattr(curr_cls, "_component_media", None)
if comp_media is not None and not comp_media.resolved:
_resolve_media(curr_cls, comp_media)
# Prepare base classes
# NOTE: If the `Component.Media` class is explicitly set to `None`, then we should not inherit
# from any parent classes.
@ -620,39 +611,20 @@ def _resolve_media(comp_cls: Type["Component"], comp_media: ComponentMedia) -> N
# Effectively, even if the Component class defined `js_file` (or others), at "runtime" the `js` attribute
# will be set to the content of the file.
# So users can access `Component.js` even if they defined `Component.js_file`.
template_str, template_obj = _get_asset(
comp_media.template = _get_asset(
comp_cls,
comp_media,
inlined_attr="template",
file_attr="template_file",
comp_dirs=comp_dirs,
type="template",
)
comp_media.js = _get_asset(
comp_cls, comp_media, inlined_attr="js", file_attr="js_file", comp_dirs=comp_dirs, type="static"
)
comp_media.css = _get_asset(
comp_cls, comp_media, inlined_attr="css", file_attr="css_file", comp_dirs=comp_dirs, type="static"
)
comp_media.template = template_str
js_str, _ = _get_asset(comp_cls, comp_media, inlined_attr="js", file_attr="js_file", comp_dirs=comp_dirs)
comp_media.js = js_str
css_str, _ = _get_asset(comp_cls, comp_media, inlined_attr="css", file_attr="css_file", comp_dirs=comp_dirs)
comp_media.css = css_str
# If `Component.template` or `Component.template_file` were explicitly set on this class,
# then Template instance was already created.
#
# Otherwise, search for Template instance in parent classes, and make a copy of it.
if not isinstance(template_obj, Unset):
comp_media._template = template_obj
else:
parent_template = _get_comp_cls_attr(comp_cls, "_template")
# One of base classes has set `template` or `template_file` to `None`,
# or none of the base classes had set `template` or `template_file`
if parent_template is None:
comp_media._template = parent_template
# One of base classes has set `template` or `template_file` to string.
# Make a copy of the Template instance.
else:
comp_media._template = ensure_unique_template(comp_cls, parent_template)
def _normalize_media(media: Type[ComponentMediaInput]) -> None:
@ -1001,10 +973,11 @@ def _find_component_dir_containing_file(
def _get_asset(
comp_cls: Type["Component"],
comp_media: ComponentMedia,
inlined_attr: Literal["template", "js", "css"],
file_attr: Literal["template_file", "js_file", "css_file"],
inlined_attr: str,
file_attr: str,
comp_dirs: List[Path],
) -> Tuple[Union[str, Unset, None], Union[Template, Unset, None]]: # Tuple of (content, Template)
type: Literal["template", "static"],
) -> Union[str, Unset, None]:
"""
In case of Component's JS or CSS, one can either define that as "inlined" or as a file.
@ -1037,7 +1010,7 @@ def _get_asset(
# pass
# ```
if asset_content is UNSET and asset_file is UNSET:
return UNSET, UNSET
return UNSET
# Either file or content attr was set to `None`
# ```py
@ -1058,7 +1031,7 @@ def _get_asset(
if (asset_content in (UNSET, None) and asset_file is None) or (
asset_content is None and asset_file in (UNSET, None)
):
return None, None
return None
# Received both inlined content and file name
# ```py
@ -1088,68 +1061,42 @@ def _get_asset(
# At this point we can tell that only EITHER `asset_content` OR `asset_file` is set.
# If the content was inlined into the component (e.g. `Component.template = "..."`)
# then there's nothing to resolve. Use it as is.
if not isinstance(asset_content, Unset):
if asset_content is None:
return None, None
# then there's nothing to resolve. Return as is.
if asset_content is not UNSET:
return asset_content
content: str = asset_content
if asset_file is None:
return None
# If we got inlined `Component.template`, then create a Template instance from it
# to trigger the extension hooks that may modify the template string.
if inlined_attr == "template":
# NOTE: `load_component_template()` applies `on_template_loaded()` and `on_template_compiled()` hooks.
template = load_component_template(comp_cls, filepath=None, content=content)
return template.source, template
# The rest of the code assumes that we were given only a file name
asset_file = cast(str, asset_file)
# This else branch assumes that we were given a file name (possibly None)
# Load the contents of the file.
else:
if asset_file is None:
return None, None
if type == "template":
# NOTE: While we return on the "source" (plain string) of the template,
# by calling `load_component_template()`, we also cache the Template instance.
# So later in Component's `render_impl()`, we don't have to re-compile the Template.
template = load_component_template(comp_cls, asset_file)
return template.source
asset_file = cast(str, asset_file)
# For static files, we have a few options:
# 1. Check if the file is in one of the components' directories
full_path = resolve_file(asset_file, comp_dirs)
if inlined_attr == "template":
# NOTE: `load_component_template()` applies `on_template_loaded()` and `on_template_compiled()` hooks.
template = load_component_template(comp_cls, filepath=asset_file, content=None)
return template.source, template
# 2. If not, check if it's in the static files
if full_path is None:
full_path = finders.find(asset_file)
# Following code concerns with loading JS / CSS files.
# Here we have a few options:
#
# 1. Check if the file is in one of the components' directories
full_path = resolve_file(asset_file, comp_dirs)
if full_path is None:
# NOTE: The short name, e.g. `js` or `css` is used in the error message for convenience
raise ValueError(f"Could not find {inlined_attr} file {asset_file}")
# 2. If not, check if it's in the static files
if full_path is None:
full_path = finders.find(asset_file)
# NOTE: Use explicit encoding for compat with Windows, see #1074
asset_content = Path(full_path).read_text(encoding="utf8")
if full_path is None:
# NOTE: The short name, e.g. `js` or `css` is used in the error message for convenience
raise ValueError(f"Could not find {inlined_attr} file {asset_file}")
# TODO: Apply `extensions.on_js_preprocess()` and `extensions.on_css_preprocess()`
# NOTE: `on_template_preprocess()` is already applied inside `load_component_template()`
# NOTE: Use explicit encoding for compat with Windows, see #1074
content = Path(full_path).read_text(encoding="utf8")
# NOTE: `on_template_loaded()` is already applied inside `load_component_template()`
# but we still need to call extension hooks for JS / CSS content (whether inlined or not).
if inlined_attr == "js":
content = extensions.on_js_loaded(
OnJsLoadedContext(
component_cls=comp_cls,
content=content,
)
)
elif inlined_attr == "css":
content = extensions.on_css_loaded(
OnCssLoadedContext(
component_cls=comp_cls,
content=content,
)
)
return content, None
return asset_content
def is_set(value: Union[T, Unset, None]) -> TypeGuard[T]:

View file

@ -11,7 +11,6 @@ from django.template import Context
from django_components.util.misc import get_last_index
_COMPONENT_CONTEXT_KEY = "_DJC_COMPONENT_CTX"
COMPONENT_IS_NESTED_KEY = "_DJC_COMPONENT_IS_NESTED"
_STRATEGY_CONTEXT_KEY = "DJC_DEPS_STRATEGY"
_INJECT_CONTEXT_KEY_PREFIX = "_DJC_INJECT__"

View file

@ -107,16 +107,13 @@ def _cache_script(
cache.set(cache_key, script.strip())
def cache_component_js(comp_cls: Type["Component"], force: bool) -> None:
def cache_component_js(comp_cls: Type["Component"]) -> None:
"""
Cache the content from `Component.js`. This is the common JS that's shared
among all instances of the same component. So even if the component is rendered multiple
times, this JS is loaded only once.
"""
if not comp_cls.js or not is_nonempty_str(comp_cls.js):
return None
if not force and _is_script_in_cache(comp_cls, "js", None):
if not comp_cls.js or not is_nonempty_str(comp_cls.js) or _is_script_in_cache(comp_cls, "js", None):
return None
_cache_script(
@ -170,16 +167,13 @@ def wrap_component_js(comp_cls: Type["Component"], content: str) -> str:
return f"<script>{content}</script>"
def cache_component_css(comp_cls: Type["Component"], force: bool) -> None:
def cache_component_css(comp_cls: Type["Component"]) -> None:
"""
Cache the content from `Component.css`. This is the common CSS that's shared
among all instances of the same component. So even if the component is rendered multiple
times, this CSS is loaded only once.
"""
if not comp_cls.css or not is_nonempty_str(comp_cls.css):
return None
if not force and _is_script_in_cache(comp_cls, "css", None):
if not comp_cls.css or not is_nonempty_str(comp_cls.css) or _is_script_in_cache(comp_cls, "css", None):
return None
_cache_script(

View file

@ -16,7 +16,7 @@ from typing import (
)
import django.urls
from django.template import Context, Origin, Template
from django.template import Context
from django.urls import URLPattern, URLResolver, get_resolver, get_urlconf
from django_components.app_settings import app_settings
@ -168,42 +168,6 @@ class OnSlotRenderedContext(NamedTuple):
"""The rendered result of the slot"""
@mark_extension_hook_api
class OnTemplateLoadedContext(NamedTuple):
component_cls: Type["Component"]
"""The Component class whose template was loaded"""
content: str
"""The template string"""
origin: Optional[Origin]
"""The origin of the template"""
name: Optional[str]
"""The name of the template"""
@mark_extension_hook_api
class OnTemplateCompiledContext(NamedTuple):
component_cls: Type["Component"]
"""The Component class whose template was loaded"""
template: Template
"""The compiled template object"""
@mark_extension_hook_api
class OnCssLoadedContext(NamedTuple):
component_cls: Type["Component"]
"""The Component class whose CSS was loaded"""
content: str
"""The CSS content (string)"""
@mark_extension_hook_api
class OnJsLoadedContext(NamedTuple):
component_cls: Type["Component"]
"""The Component class whose JS was loaded"""
content: str
"""The JS content (string)"""
################################################
# EXTENSIONS CORE
################################################
@ -799,108 +763,6 @@ class ComponentExtension(metaclass=ExtensionMeta):
"""
pass
##########################
# Template / JS / CSS hooks
##########################
def on_template_loaded(self, ctx: OnTemplateLoadedContext) -> Optional[str]:
"""
Called when a Component's template is loaded as a string.
This hook runs only once per [`Component`](../api#django_components.Component) class and works for both
[`Component.template`](../api#django_components.Component.template) and
[`Component.template_file`](../api#django_components.Component.template_file).
Use this hook to read or modify the template before it's compiled.
To modify the template, return a new string from this hook.
**Example:**
```python
from django_components import ComponentExtension, OnTemplateLoadedContext
class MyExtension(ComponentExtension):
def on_template_loaded(self, ctx: OnTemplateLoadedContext) -> Optional[str]:
# Modify the template
return ctx.content.replace("Hello", "Hi")
```
"""
pass
def on_template_compiled(self, ctx: OnTemplateCompiledContext) -> None:
"""
Called when a Component's template is compiled
into a [`Template`](https://docs.djangoproject.com/en/5.2/ref/templates/api/#django.template.Template) object.
This hook runs only once per [`Component`](../api#django_components.Component) class and works for both
[`Component.template`](../api#django_components.Component.template) and
[`Component.template_file`](../api#django_components.Component.template_file).
Use this hook to read or modify the template (in-place) after it's compiled.
**Example:**
```python
from django_components import ComponentExtension, OnTemplateCompiledContext
class MyExtension(ComponentExtension):
def on_template_compiled(self, ctx: OnTemplateCompiledContext) -> None:
print(f"Template origin: {ctx.template.origin.name}")
```
"""
pass
def on_css_loaded(self, ctx: OnCssLoadedContext) -> Optional[str]:
"""
Called when a Component's CSS is loaded as a string.
This hook runs only once per [`Component`](../api#django_components.Component) class and works for both
[`Component.css`](../api#django_components.Component.css) and
[`Component.css_file`](../api#django_components.Component.css_file).
Use this hook to read or modify the CSS.
To modify the CSS, return a new string from this hook.
**Example:**
```python
from django_components import ComponentExtension, OnCssLoadedContext
class MyExtension(ComponentExtension):
def on_css_loaded(self, ctx: OnCssLoadedContext) -> Optional[str]:
# Modify the CSS
return ctx.content.replace("Hello", "Hi")
```
"""
pass
def on_js_loaded(self, ctx: OnJsLoadedContext) -> Optional[str]:
"""
Called when a Component's JS is loaded as a string.
This hook runs only once per [`Component`](../api#django_components.Component) class and works for both
[`Component.js`](../api#django_components.Component.js) and
[`Component.js_file`](../api#django_components.Component.js_file).
Use this hook to read or modify the JS.
To modify the JS, return a new string from this hook.
**Example:**
```python
from django_components import ComponentExtension, OnCssLoadedContext
class MyExtension(ComponentExtension):
def on_js_loaded(self, ctx: OnJsLoadedContext) -> Optional[str]:
# Modify the JS
return ctx.content.replace("Hello", "Hi")
```
"""
pass
##########################
# Tags lifecycle hooks
##########################
@ -1047,7 +909,7 @@ class ExtensionManager:
# - `MyExtensionBase` is the base class that the extension class inherits from.
bases_list = [ext_base_class]
all_extensions_defaults = app_settings.EXTENSIONS_DEFAULTS or {}
all_extensions_defaults = app_settings._settings.extensions_defaults or {}
extension_defaults = all_extensions_defaults.get(extension.name, None)
if extension_defaults:
# Create dummy class that holds the extension defaults
@ -1307,34 +1169,9 @@ class ExtensionManager:
return ctx.result, ctx.error
##########################
# Template / JS / CSS hooks
# Tags lifecycle hooks
##########################
def on_template_loaded(self, ctx: OnTemplateLoadedContext) -> str:
for extension in self.extensions:
content = extension.on_template_loaded(ctx)
if content is not None:
ctx = ctx._replace(content=content)
return ctx.content
def on_template_compiled(self, ctx: OnTemplateCompiledContext) -> None:
for extension in self.extensions:
extension.on_template_compiled(ctx)
def on_css_loaded(self, ctx: OnCssLoadedContext) -> str:
for extension in self.extensions:
content = extension.on_css_loaded(ctx)
if content is not None:
ctx = ctx._replace(content=content)
return ctx.content
def on_js_loaded(self, ctx: OnJsLoadedContext) -> str:
for extension in self.extensions:
content = extension.on_js_loaded(ctx)
if content is not None:
ctx = ctx._replace(content=content)
return ctx.content
def on_slot_rendered(self, ctx: OnSlotRenderedContext) -> Optional[str]:
for extension in self.extensions:
result = extension.on_slot_rendered(ctx)

View file

@ -1,21 +0,0 @@
from django_components.dependencies import cache_component_css, cache_component_js
from django_components.extension import (
ComponentExtension,
OnComponentClassCreatedContext,
)
class DependenciesExtension(ComponentExtension):
"""
This extension adds a nested `Dependencies` class to each `Component`.
This extension is automatically added to all components.
"""
name = "dependencies"
# Cache the component's JS and CSS scripts when the class is created, so that
# components' JS/CSS files are accessible even before having to render the component first.
def on_component_class_created(self, ctx: OnComponentClassCreatedContext) -> None:
cache_component_js(ctx.component_cls, force=True)
cache_component_css(ctx.component_cls, force=True)

View file

@ -28,7 +28,7 @@ from django.utils.html import conditional_escape
from django.utils.safestring import SafeString, mark_safe
from django_components.app_settings import ContextBehavior
from django_components.context import _COMPONENT_CONTEXT_KEY, _INJECT_CONTEXT_KEY_PREFIX, COMPONENT_IS_NESTED_KEY
from django_components.context import _COMPONENT_CONTEXT_KEY, _INJECT_CONTEXT_KEY_PREFIX
from django_components.extension import OnSlotRenderedContext, extensions
from django_components.node import BaseNode
from django_components.perfutil.component import component_context_cache
@ -742,7 +742,7 @@ class SlotNode(BaseNode):
# 1. Using the "django" context behavior
# 2. AND the slot fill is defined in the root template
#
# Then `ctx_with_fills.component.raw_slots` does NOT contain any fills (`{% fill %}`). So in this case,
# Then `ctx_with_fills.fills` does NOT contain any fills (`{% fill %}`). So in this case,
# we need to use a different strategy to find the fills Context layer that contains the fills.
#
# ------------------------------------------------------------------------------------------
@ -825,7 +825,7 @@ class SlotNode(BaseNode):
if parent_index is not None:
ctx_id_with_fills = context.dicts[parent_index][_COMPONENT_CONTEXT_KEY]
ctx_with_fills = component_context_cache[ctx_id_with_fills]
slot_fills = ctx_with_fills.component.raw_slots
slot_fills = ctx_with_fills.fills
# Add trace message when slot_fills are overwritten
trace_component_msg(
@ -1585,6 +1585,8 @@ def _nodelist_to_slot(
# and binds the context.
template = Template("")
template.nodelist = nodelist
# This allows the template to access current RenderContext layer.
template._djc_is_component_nested = True
def render_func(ctx: SlotContext) -> SlotResult:
context = ctx.context or Context()
@ -1637,12 +1639,10 @@ def _nodelist_to_slot(
trace_component_msg("RENDER_NODELIST", component_name, component_id=None, slot_name=slot_name)
# NOTE 1: We wrap the slot nodelist in Template. However, we also override Django's `Template.render()`
# to call `render_dependencies()` on the results. So we need to set the strategy to `ignore`
# so that the dependencies are processed only once the whole component tree is rendered.
# NOTE 2: We also set `_DJC_COMPONENT_IS_NESTED` to `True` so that the template can access
# current RenderContext layer.
with context.push({"DJC_DEPS_STRATEGY": "ignore", COMPONENT_IS_NESTED_KEY: True}):
# We wrap the slot nodelist in Template. However, we also override Django's `Template.render()`
# to call `render_dependencies()` on the results. So we need to set the strategy to `ignore`
# so that the dependencies are processed only once the whole component tree is rendered.
with context.push({"DJC_DEPS_STRATEGY": "ignore"}):
rendered = template.render(context)
# After the rendering is done, remove the `extra_context` from the context stack

View file

@ -1,6 +1,6 @@
import sys
from contextlib import contextmanager
from typing import TYPE_CHECKING, Any, Dict, Generator, List, Optional, Type, Union
from typing import TYPE_CHECKING, Any, Dict, Generator, List, Optional, Type, Union, cast
from weakref import ReferenceType, ref
from django.core.exceptions import ImproperlyConfigured
@ -8,7 +8,7 @@ from django.template import Context, Origin, Template
from django.template.loader import get_template as django_get_template
from django_components.cache import get_template_cache
from django_components.util.django_monkeypatch import is_cls_patched
from django_components.util.django_monkeypatch import is_template_cls_patched
from django_components.util.loader import get_component_dirs
from django_components.util.logger import trace_component_msg
from django_components.util.misc import get_import_path, get_module_info
@ -98,7 +98,7 @@ def prepare_component_template(
yield template
return
if not is_cls_patched(template):
if not is_template_cls_patched(template):
raise RuntimeError(
"Django-components received a Template instance which was not patched."
"If you are using Django's Template class, check if you added django-components"
@ -170,45 +170,30 @@ def _maybe_bind_template(context: Context, template: Template) -> Generator[None
loading_components: List["ComponentRef"] = []
def load_component_template(
component_cls: Type["Component"],
filepath: Optional[str] = None,
content: Optional[str] = None,
) -> Template:
if filepath is None and content is None:
raise ValueError("Either `filepath` or `content` must be provided.")
def load_component_template(component_cls: Type["Component"], filepath: str) -> Template:
if component_cls._template is not None:
return component_cls._template
loading_components.append(ref(component_cls))
if filepath is not None:
# Use Django's `get_template()` to load the template file
template = _load_django_template(filepath)
template = ensure_unique_template(component_cls, template)
# Use Django's `get_template()` to load the template
template = _load_django_template(filepath)
elif content is not None:
template = _create_template_from_string(component_cls, content, is_component_template=True)
else:
raise ValueError("Received both `filepath` and `content`. These are mutually exclusive.")
loading_components.pop()
return template
# When loading a Template instance, it may be cached by Django / template loaders.
# In that case we want to make a copy of the template which would
# be owned by the current Component class.
# Thus each Component has it's own Template instance with their own Origins
# pointing to the correct Component class.
def ensure_unique_template(component_cls: Type["Component"], template: Template) -> Template:
# Use `template.origin.component_cls` to check if the template was cached by Django / template loaders.
if get_component_from_origin(template.origin) is None:
set_component_to_origin(template.origin, component_cls)
else:
# If template.origin.component_cls is already set, then this
# Template instance was cached by Django / template loaders.
# In that case we want to make a copy of the template which would
# be owned by the current Component class.
# Thus each Component has it's own Template instance with their own Origins
# pointing to the correct Component class.
if get_component_from_origin(template.origin) is not None:
origin_copy = Origin(template.origin.name, template.origin.template_name, template.origin.loader)
set_component_to_origin(origin_copy, component_cls)
template = Template(template.source, origin=origin_copy, name=template.name, engine=template.engine)
component_cls._template = template
loading_components.pop()
return template
@ -265,13 +250,24 @@ def _get_component_template(component: "Component") -> Optional[Template]:
template = None
template_string = template_sources["get_template"]
elif component.template or component.template_file:
# If the template was loaded from `Component.template` or `Component.template_file`,
# then the Template instance was already created and cached in `Component._template`.
# If the template was loaded from `Component.template_file`, then the Template
# instance was already created and cached in `Component._template`.
#
# NOTE: This is important to keep in mind, because the implication is that we should
# treat Templates AND their nodelists as IMMUTABLE.
template = component.__class__._component_media._template # type: ignore[attr-defined]
template_string = None
if component.__class__._template is not None:
template = component.__class__._template
template_string = None
# Otherwise user have set `Component.template` as string and we still need to
# create the instance.
else:
template = _create_template_from_string(
component,
# NOTE: We can't reach this branch if `Component.template` is None
cast(str, component.template),
is_component_template=True,
)
template_string = None
# No template
else:
template = None
@ -282,7 +278,7 @@ def _get_component_template(component: "Component") -> Optional[Template]:
return template
# Create the template from the string
elif template_string is not None:
return _create_template_from_string(component.__class__, template_string)
return _create_template_from_string(component, template_string)
# Otherwise, Component has no template - this is valid, as it may be instead rendered
# via `Component.on_render()`
@ -290,7 +286,7 @@ def _get_component_template(component: "Component") -> Optional[Template]:
def _create_template_from_string(
component: Type["Component"],
component: "Component",
template_string: str,
is_component_template: bool = False,
) -> Template:
@ -311,17 +307,18 @@ def _create_template_from_string(
# ```
#
# See https://docs.djangoproject.com/en/5.2/howto/custom-template-backend/#template-origin-api
_, _, module_filepath = get_module_info(component)
_, _, module_filepath = get_module_info(component.__class__)
origin = Origin(
name=f"{module_filepath}::{component.__name__}",
name=f"{module_filepath}::{component.__class__.__name__}",
template_name=None,
loader=None,
)
set_component_to_origin(origin, component)
set_component_to_origin(origin, component.__class__)
if is_component_template:
template = Template(template_string, name=origin.template_name, origin=origin)
component.__class__._template = template
else:
# TODO_V1 - `cached_template()` won't be needed as there will be only 1 template per component
# so we will be able to instead use `template_cache` to store the template

View file

@ -1,28 +1,23 @@
from typing import Any, Optional, Type
from django.template import Context, NodeList, Template
from django.template.base import Node, Origin, Parser
from django.template.loader_tags import IncludeNode
from django.template.base import Origin, Parser
from django_components.context import _COMPONENT_CONTEXT_KEY, _STRATEGY_CONTEXT_KEY, COMPONENT_IS_NESTED_KEY
from django_components.context import _COMPONENT_CONTEXT_KEY, _STRATEGY_CONTEXT_KEY
from django_components.dependencies import COMPONENT_COMMENT_REGEX, render_dependencies
from django_components.extension import OnTemplateCompiledContext, OnTemplateLoadedContext, extensions
from django_components.util.template_parser import parse_template
# In some cases we can't work around Django's design, and need to patch the template class.
def monkeypatch_template_cls(template_cls: Type[Template]) -> None:
if is_cls_patched(template_cls):
return
monkeypatch_template_init(template_cls)
monkeypatch_template_compile_nodelist(template_cls)
monkeypatch_template_render(template_cls)
template_cls._djc_patched = True
# Patch `Template.__init__` to apply `on_template_loaded()` and `on_template_compiled()`
# extension hooks if the template belongs to a Component.
# Patch `Template.__init__` to apply `extensions.on_template_preprocess()` if the template
# belongs to a Component.
def monkeypatch_template_init(template_cls: Type[Template]) -> None:
original_init = template_cls.__init__
@ -32,7 +27,6 @@ def monkeypatch_template_init(template_cls: Type[Template]) -> None:
self: Template,
template_string: Any,
origin: Optional[Origin] = None,
name: Optional[str] = None,
*args: Any,
**kwargs: Any,
) -> None:
@ -62,27 +56,11 @@ def monkeypatch_template_init(template_cls: Type[Template]) -> None:
component_cls = None
if component_cls is not None:
template_string = str(template_string)
template_string = extensions.on_template_loaded(
OnTemplateLoadedContext(
component_cls=component_cls,
content=template_string,
origin=origin,
name=name,
)
)
# TODO - Apply extensions.on_template_preprocess() here.
# Then also test both cases when template as `template` or `template_file`.
pass
# Calling original `Template.__init__` should also compile the template into a Nodelist
# via `Template.compile_nodelist()`.
original_init(self, template_string, origin, name, *args, **kwargs) # type: ignore[misc]
if component_cls is not None:
extensions.on_template_compiled(
OnTemplateCompiledContext(
component_cls=component_cls,
template=self,
)
)
original_init(self, template_string, origin, *args, **kwargs) # type: ignore[misc]
template_cls.__init__ = __init__
@ -132,7 +110,7 @@ def monkeypatch_template_compile_nodelist(template_cls: Type[Template]) -> None:
def monkeypatch_template_render(template_cls: Type[Template]) -> None:
# Modify `Template.render` to set `isolated_context` kwarg of `push_state`
# based on our custom `_DJC_COMPONENT_IS_NESTED`.
# based on our custom `Template._djc_is_component_nested`.
#
# Part of fix for https://github.com/django-components/django-components/issues/508
#
@ -147,11 +125,11 @@ def monkeypatch_template_render(template_cls: Type[Template]) -> None:
# doesn't require the source to be parsed multiple times. User can pass extra args/kwargs,
# and can modify the rendering behavior by overriding the `_render` method.
#
# NOTE 2: Instead of setting `_DJC_COMPONENT_IS_NESTED` context key, alternatively we could
# NOTE 2: Instead of setting `Template._djc_is_component_nested`, alternatively we could
# have passed the value to `monkeypatch_template_render` directly. However, we intentionally
# did NOT do that, so the monkey-patched method is more robust, and can be e.g. copied
# to other.
if is_cls_patched(template_cls):
if is_template_cls_patched(template_cls):
# Do not patch if done so already. This helps us avoid RecursionError
return
@ -159,12 +137,12 @@ def monkeypatch_template_render(template_cls: Type[Template]) -> None:
def _template_render(self: Template, context: Context, *args: Any, **kwargs: Any) -> str:
"Display stage -- can be called many times"
# We parametrized `isolated_context`, which was `True` in the original method.
if COMPONENT_IS_NESTED_KEY not in context:
if not hasattr(self, "_djc_is_component_nested"):
isolated_context = True
else:
# MUST be `True` for templates that are NOT import with `{% extends %}` tag,
# and `False` otherwise.
isolated_context = not context[COMPONENT_IS_NESTED_KEY]
isolated_context = not self._djc_is_component_nested
# This is original implementation, except we override `isolated_context`,
# and we post-process the result with `render_dependencies()`.
@ -211,37 +189,5 @@ def monkeypatch_template_render(template_cls: Type[Template]) -> None:
template_cls.render = _template_render
def monkeypatch_include_node(include_node_cls: Type[Node]) -> None:
if is_cls_patched(include_node_cls):
return
monkeypatch_include_render(include_node_cls)
include_node_cls._djc_patched = True
def monkeypatch_include_render(include_node_cls: Type[Node]) -> None:
# Modify `IncludeNode.render()` (what renders `{% include %}` tag) so that the included
# template does NOT render the JS/CSS by itself.
#
# Instead, we want the parent template
# (which contains the `{% component %}` tag) to decide whether to render the JS/CSS.
#
# We achieve this by setting `DJC_DEPS_STRATEGY` to `ignore` in the context.
#
# Fix for https://github.com/django-components/django-components/issues/1296
if is_cls_patched(include_node_cls):
# Do not patch if done so already. This helps us avoid RecursionError
return
orig_include_render = include_node_cls.render
# NOTE: This implementation is based on Django v5.1.3)
def _include_render(self: IncludeNode, context: Context, *args: Any, **kwargs: Any) -> str:
with context.update({_STRATEGY_CONTEXT_KEY: "ignore"}):
return orig_include_render(self, context, *args, **kwargs)
include_node_cls.render = _include_render
def is_cls_patched(cls: Type[Any]) -> bool:
return getattr(cls, "_djc_patched", False)
def is_template_cls_patched(template_cls: Type[Template]) -> bool:
return getattr(template_cls, "_djc_patched", False)

View file

@ -25,7 +25,7 @@ def component_error_message(component_path: List[str]) -> Generator[None, None,
if not components:
orig_msg = str(err.args[0])
else:
orig_msg = str(err.args[0]).split("\n", 1)[-1]
orig_msg = err.args[0].split("\n", 1)[-1]
else:
orig_msg = str(err)

View file

@ -1,4 +1,4 @@
{% include "component_inside_include_sub.html" %}
{% include "test_cached_component_inside_include_sub.html" %}
{% block content %}
THIS_IS_IN_BASE_TEMPLATE_SO_SHOULD_BE_OVERRIDDEN
{% endblock %}

View file

@ -50,6 +50,8 @@ class TestImportLibraries:
}
)
def test_import_libraries(self):
# Ensure we start with a clean state
registry.clear()
all_components = registry.all().copy()
assert "single_file_component" not in all_components
assert "multi_file_component" not in all_components
@ -78,6 +80,8 @@ class TestImportLibraries:
}
)
def test_import_libraries_map_modules(self):
# Ensure we start with a clean state
registry.clear()
all_components = registry.all().copy()
assert "single_file_component" not in all_components
assert "multi_file_component" not in all_components

View file

@ -1,3 +1,5 @@
from django.core.cache.backends.locmem import LocMemCache
from django_components import Component, register
from django_components.testing import djc_test
from django_components.util.cache import LRUCache
@ -66,26 +68,16 @@ class TestCache:
@djc_test
class TestComponentMediaCache:
@djc_test(
components_settings={"cache": "test-cache"},
django_settings={
"CACHES": {
# See https://docs.djangoproject.com/en/5.2/topics/cache/#local-memory-caching
"test-cache": {
"BACKEND": "django.core.cache.backends.locmem.LocMemCache",
"LOCATION": "test-cache",
"TIMEOUT": None, # No timeout
"OPTIONS": {
"MAX_ENTRIES": 10_000,
},
},
},
},
)
@djc_test(components_settings={"cache": "test-cache"})
def test_component_media_caching(self):
from django.core.cache import caches
test_cache = caches["test-cache"]
test_cache = LocMemCache(
"test-cache",
{
"TIMEOUT": None, # No timeout
"MAX_ENTRIES": None, # No max size
"CULL_FREQUENCY": 3,
},
)
@register("test_simple")
class TestSimpleComponent(Component):
@ -116,6 +108,14 @@ class TestComponentMediaCache:
def get_css_data(self, args, kwargs, slots, context):
return {"color": "blue"}
# Register our test cache
from django.core.cache import caches
caches["test-cache"] = test_cache
# Render the components to trigger caching
TestMediaAndVarsComponent.render()
# Check that JS/CSS is cached for components that have them
assert test_cache.has_key(f"__components:{TestMediaAndVarsComponent.class_id}:js")
assert test_cache.has_key(f"__components:{TestMediaAndVarsComponent.class_id}:css")
@ -128,9 +128,6 @@ class TestComponentMediaCache:
assert test_cache.get(f"__components:{TestMediaNoVarsComponent.class_id}:js").strip() == "console.log('Hello from JS');" # noqa: E501
assert test_cache.get(f"__components:{TestMediaNoVarsComponent.class_id}:css").strip() == ".novars-component { color: blue; }" # noqa: E501
# Render the components to trigger caching of JS/CSS variables from `get_js_data` / `get_css_data`
TestMediaAndVarsComponent.render()
# Check that we cache JS / CSS scripts generated from `get_js_data` / `get_css_data`
# NOTE: The hashes is generated from the data.
js_vars_hash = "216ecc"

View file

@ -103,7 +103,6 @@ class TestExtensionsListCommand:
"===============\n"
"cache \n"
"defaults \n"
"dependencies \n"
"view \n"
"debug_highlight"
)
@ -122,7 +121,6 @@ class TestExtensionsListCommand:
"===============\n"
"cache \n"
"defaults \n"
"dependencies \n"
"view \n"
"debug_highlight\n"
"empty \n"
@ -143,7 +141,6 @@ class TestExtensionsListCommand:
"===============\n"
"cache \n"
"defaults \n"
"dependencies \n"
"view \n"
"debug_highlight\n"
"empty \n"
@ -164,7 +161,6 @@ class TestExtensionsListCommand:
"===============\n"
"cache \n"
"defaults \n"
"dependencies \n"
"view \n"
"debug_highlight\n"
"empty \n"
@ -183,7 +179,6 @@ class TestExtensionsListCommand:
assert output.strip() == (
"cache \n"
"defaults \n"
"dependencies \n"
"view \n"
"debug_highlight\n"
"empty \n"
@ -211,16 +206,21 @@ class TestExtensionsRunCommand:
output
== dedent(
f"""
usage: components ext run [-h] {{dummy}} ...
usage: components ext run [-h] {{cache,defaults,view,debug_highlight,empty,dummy}} ...
Run a command added by an extension.
{OPTIONS_TITLE}:
-h, --help show this help message and exit
-h, --help show this help message and exit
subcommands:
{{dummy}}
dummy Run commands added by the 'dummy' extension.
{{cache,defaults,view,debug_highlight,empty,dummy}}
cache Run commands added by the 'cache' extension.
defaults Run commands added by the 'defaults' extension.
view Run commands added by the 'view' extension.
debug_highlight Run commands added by the 'debug_highlight' extension.
empty Run commands added by the 'empty' extension.
dummy Run commands added by the 'dummy' extension.
"""
).lstrip()
)
@ -231,23 +231,19 @@ class TestExtensionsRunCommand:
def test_run_command_ext_empty(self):
out = StringIO()
with patch("sys.stdout", new=out):
call_command("components", "ext", "run", "dummy")
call_command("components", "ext", "run", "empty")
output = out.getvalue()
assert (
output
== dedent(
f"""
usage: components ext run dummy [-h] {{dummy_cmd}} ...
usage: components ext run empty [-h]
Run commands added by the 'dummy' extension.
Run commands added by the 'empty' extension.
{OPTIONS_TITLE}:
-h, --help show this help message and exit
subcommands:
{{dummy_cmd}}
dummy_cmd Dummy command description.
-h, --help show this help message and exit
"""
).lstrip()
)

View file

@ -219,7 +219,7 @@ class TestComponentCache:
template = Template(
"""
{% extends "component_inside_include_base.html" %}
{% extends "test_cached_component_inside_include_base.html" %}
{% block content %}
THIS_IS_IN_ACTUAL_TEMPLATE_SO_SHOULD_NOT_BE_OVERRIDDEN
{% endblock %}

View file

@ -15,6 +15,7 @@ from django.utils.safestring import mark_safe
from pytest_django.asserts import assertHTMLEqual, assertInHTML
from django_components import Component, autodiscover, registry, render_dependencies, types
from django_components.component_media import UNSET
from django_components.testing import djc_test
from .testutils import setup_test_config
@ -45,7 +46,7 @@ class TestMainMedia:
rendered = TestComponent.render()
assertInHTML(
'<div class="html-css-only" data-djc-id-ca1bc40>Content</div>',
'<div class="html-css-only" data-djc-id-ca1bc3e>Content</div>',
rendered,
)
assertInHTML(
@ -69,9 +70,6 @@ class TestMainMedia:
assert TestComponent.css == ".html-css-only { color: blue; }"
assert TestComponent.js == "console.log('HTML and JS only');"
assert isinstance(TestComponent._template, Template)
assert TestComponent._template.origin.component_cls is TestComponent
@djc_test(
django_settings={
"STATICFILES_DIRS": [
@ -129,9 +127,6 @@ class TestMainMedia:
assert TestComponent.css == ".html-css-only {\n color: blue;\n}\n"
assert TestComponent.js == 'console.log("JS file");\n'
assert isinstance(TestComponent._template, Template)
assert TestComponent._template.origin.component_cls is TestComponent
@djc_test(
django_settings={
"STATICFILES_DIRS": [
@ -156,9 +151,6 @@ class TestMainMedia:
assert ".html-css-only {\n color: blue;\n}" in TestComponent.css # type: ignore[operator]
assert 'console.log("HTML and JS only");' in TestComponent.js # type: ignore[operator]
assert isinstance(TestComponent._template, Template)
assert TestComponent._template.origin.component_cls is TestComponent
rendered = Template(
"""
{% load component_tags %}
@ -203,18 +195,13 @@ class TestMainMedia:
class TestComponent(AppLvlCompComponent):
pass
# NOTE: Currently the components' JS/CSS are loaded eagerly, to make the JS/CSS
# files available via endpoints. If that is no longer true, uncomment the
# following lines to test the lazy loading of the CSS.
#
# # Since this is a subclass, actual CSS is defined on the parent class, and thus
# # the corresponding ComponentMedia instance is also on the parent class.
# assert AppLvlCompComponent._component_media.css is UNSET # type: ignore[attr-defined]
# assert AppLvlCompComponent._component_media.css_file == "app_lvl_comp.css" # type: ignore[attr-defined]
# assert AppLvlCompComponent._component_media._template is UNSET # type: ignore[attr-defined]
#
# # Access the property to load the CSS
# _ = TestComponent.css
# NOTE: Since this is a subclass, actual CSS is defined on the parent class, and thus
# the corresponding ComponentMedia instance is also on the parent class.
assert AppLvlCompComponent._component_media.css is UNSET # type: ignore[attr-defined]
assert AppLvlCompComponent._component_media.css_file == "app_lvl_comp.css" # type: ignore[attr-defined]
# Access the property to load the CSS
_ = TestComponent.css
assert AppLvlCompComponent._component_media.css == (".html-css-only {\n" " color: blue;\n" "}\n") # type: ignore[attr-defined]
assert AppLvlCompComponent._component_media.css_file == "app_lvl_comp/app_lvl_comp.css" # type: ignore[attr-defined]
@ -231,9 +218,6 @@ class TestMainMedia:
assert AppLvlCompComponent._component_media.js == 'console.log("JS file");\n' # type: ignore[attr-defined]
assert AppLvlCompComponent._component_media.js_file == "app_lvl_comp/app_lvl_comp.js" # type: ignore[attr-defined]
assert isinstance(AppLvlCompComponent._component_media._template, Template) # type: ignore[attr-defined]
assert AppLvlCompComponent._component_media._template.origin.component_cls is AppLvlCompComponent # type: ignore[attr-defined]
def test_html_variable_filtered(self):
class FilteredComponent(Component):
template: types.django_html = """
@ -1053,121 +1037,73 @@ class TestSubclassingAttributes:
class TestComp(Component):
js = None
js_file = None
template = None
template_file = None
assert TestComp.js is None
assert TestComp.js_file is None
assert TestComp.template is None
assert TestComp.template_file is None
def test_mixing_none_and_non_none_raises(self):
with pytest.raises(
ImproperlyConfigured,
match=re.escape("Received non-empty value from both 'template' and 'template_file' in Component TestComp"),
match=re.escape("Received non-empty value from both 'js' and 'js_file' in Component TestComp"),
):
class TestComp(Component):
js = "console.log('hi')"
js_file = None
template = "<h1>hi</h1>"
template_file = None
def test_both_non_none_raises(self):
with pytest.raises(
ImproperlyConfigured,
match=re.escape("Received non-empty value from both 'template' and 'template_file' in Component TestComp"),
match=re.escape("Received non-empty value from both 'js' and 'js_file' in Component TestComp"),
):
class TestComp(Component):
js = "console.log('hi')"
js_file = "file.js"
template = "<h1>hi</h1>"
template_file = "file.html"
def test_parent_non_null_child_non_null(self):
class ParentComp(Component):
js = "console.log('parent')"
template = "<h1>parent</h1>"
class TestComp(ParentComp):
js = "console.log('child')"
template = "<h1>child</h1>"
assert TestComp.js == "console.log('child')"
assert TestComp.js_file is None
assert TestComp.template == "<h1>child</h1>"
assert TestComp.template_file is None
assert isinstance(ParentComp._template, Template)
assert ParentComp._template.source == "<h1>parent</h1>"
assert ParentComp._template.origin.component_cls == ParentComp
assert isinstance(TestComp._template, Template)
assert TestComp._template.source == "<h1>child</h1>"
assert TestComp._template.origin.component_cls == TestComp
def test_parent_null_child_non_null(self):
class ParentComp(Component):
js = None
template = None
class TestComp(ParentComp):
js = "console.log('child')"
template = "<h1>child</h1>"
assert TestComp.js == "console.log('child')"
assert TestComp.js_file is None
assert TestComp.template == "<h1>child</h1>"
assert TestComp.template_file is None
assert ParentComp._template is None
assert isinstance(TestComp._template, Template)
assert TestComp._template.source == "<h1>child</h1>"
assert TestComp._template.origin.component_cls == TestComp
def test_parent_non_null_child_null(self):
class ParentComp(Component):
js: Optional[str] = "console.log('parent')"
template: Optional[str] = "<h1>parent</h1>"
class TestComp(ParentComp):
js = None
template = None
assert TestComp.js is None
assert TestComp.js_file is None
assert TestComp.template is None
assert TestComp.template_file is None
assert TestComp._template is None
assert isinstance(ParentComp._template, Template)
assert ParentComp._template.source == "<h1>parent</h1>"
assert ParentComp._template.origin.component_cls == ParentComp
def test_parent_null_child_null(self):
class ParentComp(Component):
js = None
template = None
class TestComp(ParentComp):
js = None
template = None
assert TestComp.js is None
assert TestComp.js_file is None
assert TestComp.template is None
assert TestComp.template_file is None
assert TestComp._template is None
assert ParentComp._template is None
def test_grandparent_non_null_parent_pass_child_pass(self):
class GrandParentComp(Component):
js = "console.log('grandparent')"
template = "<h1>grandparent</h1>"
class ParentComp(GrandParentComp):
pass
@ -1177,97 +1113,45 @@ class TestSubclassingAttributes:
assert TestComp.js == "console.log('grandparent')"
assert TestComp.js_file is None
assert TestComp.template == "<h1>grandparent</h1>"
assert TestComp.template_file is None
assert isinstance(GrandParentComp._template, Template)
assert GrandParentComp._template.source == "<h1>grandparent</h1>"
assert GrandParentComp._template.origin.component_cls == GrandParentComp
assert isinstance(ParentComp._template, Template)
assert ParentComp._template.source == "<h1>grandparent</h1>"
assert ParentComp._template.origin.component_cls == ParentComp
assert isinstance(TestComp._template, Template)
assert TestComp._template.source == "<h1>grandparent</h1>"
assert TestComp._template.origin.component_cls == TestComp
def test_grandparent_non_null_parent_null_child_pass(self):
class GrandParentComp(Component):
js: Optional[str] = "console.log('grandparent')"
template: Optional[str] = "<h1>grandparent</h1>"
class ParentComp(GrandParentComp):
js = None
template = None
class TestComp(ParentComp):
pass
assert TestComp.js is None
assert TestComp.js_file is None
assert TestComp.template is None
assert TestComp.template_file is None
assert isinstance(GrandParentComp._template, Template)
assert GrandParentComp._template.source == "<h1>grandparent</h1>"
assert GrandParentComp._template.origin.component_cls == GrandParentComp
assert ParentComp._template is None
assert TestComp._template is None
def test_grandparent_non_null_parent_pass_child_non_null(self):
class GrandParentComp(Component):
js = "console.log('grandparent')"
template = "<h1>grandparent</h1>"
class ParentComp(GrandParentComp):
pass
class TestComp(ParentComp):
js = "console.log('child')"
template = "<h1>child</h1>"
assert TestComp.js == "console.log('child')"
assert TestComp.js_file is None
assert TestComp.template == "<h1>child</h1>"
assert TestComp.template_file is None
assert isinstance(GrandParentComp._template, Template)
assert GrandParentComp._template.source == "<h1>grandparent</h1>"
assert GrandParentComp._template.origin.component_cls == GrandParentComp
assert isinstance(ParentComp._template, Template)
assert ParentComp._template.source == "<h1>grandparent</h1>"
assert ParentComp._template.origin.component_cls == ParentComp
assert isinstance(TestComp._template, Template)
assert TestComp._template.source == "<h1>child</h1>"
assert TestComp._template.origin.component_cls == TestComp
def test_grandparent_null_parent_pass_child_non_null(self):
class GrandParentComp(Component):
js = None
template = None
class ParentComp(GrandParentComp):
pass
class TestComp(ParentComp):
js = "console.log('child')"
template = "<h1>child</h1>"
assert TestComp.js == "console.log('child')"
assert TestComp.js_file is None
assert TestComp.template == "<h1>child</h1>"
assert TestComp.template_file is None
assert GrandParentComp._template is None
assert ParentComp._template is None
assert isinstance(TestComp._template, Template)
assert TestComp._template.source == "<h1>child</h1>"
assert TestComp._template.origin.component_cls == TestComp
@djc_test

View file

@ -3,7 +3,7 @@ from typing import Any, Callable, Dict, List, cast
import pytest
from django.http import HttpRequest, HttpResponse
from django.template import Context, Origin, Template
from django.template import Context
from django.test import Client
from django_components import Component, Slot, SlotNode, register, registry
@ -23,15 +23,10 @@ from django_components.extension import (
OnComponentDataContext,
OnComponentRenderedContext,
OnSlotRenderedContext,
OnTemplateLoadedContext,
OnTemplateCompiledContext,
OnJsLoadedContext,
OnCssLoadedContext,
)
from django_components.extensions.cache import CacheExtension
from django_components.extensions.debug_highlight import DebugHighlightExtension
from django_components.extensions.defaults import DefaultsExtension
from django_components.extensions.dependencies import DependenciesExtension
from django_components.extensions.view import ViewExtension
from django_components.testing import djc_test
@ -90,10 +85,6 @@ class DummyExtension(ComponentExtension):
"on_component_data": [],
"on_component_rendered": [],
"on_slot_rendered": [],
"on_template_loaded": [],
"on_template_compiled": [],
"on_js_loaded": [],
"on_css_loaded": [],
}
urls = [
@ -135,18 +126,6 @@ class DummyExtension(ComponentExtension):
def on_slot_rendered(self, ctx: OnSlotRenderedContext) -> None:
self.calls["on_slot_rendered"].append(ctx)
def on_template_loaded(self, ctx):
self.calls["on_template_loaded"].append(ctx)
def on_template_compiled(self, ctx):
self.calls["on_template_compiled"].append(ctx)
def on_js_loaded(self, ctx):
self.calls["on_js_loaded"].append(ctx)
def on_css_loaded(self, ctx):
self.calls["on_css_loaded"].append(ctx)
class DummyNestedExtension(ComponentExtension):
name = "test_nested_extension"
@ -203,30 +182,16 @@ def with_registry(on_created: Callable):
on_created(registry)
class OverrideAssetExtension(ComponentExtension):
name = "override_asset_extension"
def on_template_loaded(self, ctx):
return "OVERRIDDEN TEMPLATE"
def on_js_loaded(self, ctx):
return "OVERRIDDEN JS"
def on_css_loaded(self, ctx):
return "OVERRIDDEN CSS"
@djc_test
class TestExtension:
@djc_test(components_settings={"extensions": [DummyExtension]})
def test_extensions_setting(self):
assert len(app_settings.EXTENSIONS) == 6
assert len(app_settings.EXTENSIONS) == 5
assert isinstance(app_settings.EXTENSIONS[0], CacheExtension)
assert isinstance(app_settings.EXTENSIONS[1], DefaultsExtension)
assert isinstance(app_settings.EXTENSIONS[2], DependenciesExtension)
assert isinstance(app_settings.EXTENSIONS[3], ViewExtension)
assert isinstance(app_settings.EXTENSIONS[4], DebugHighlightExtension)
assert isinstance(app_settings.EXTENSIONS[5], DummyExtension)
assert isinstance(app_settings.EXTENSIONS[2], ViewExtension)
assert isinstance(app_settings.EXTENSIONS[3], DebugHighlightExtension)
assert isinstance(app_settings.EXTENSIONS[4], DummyExtension)
@djc_test(components_settings={"extensions": [DummyExtension]})
def test_access_component_from_extension(self):
@ -265,7 +230,7 @@ class TestExtension:
class TestExtensionHooks:
@djc_test(components_settings={"extensions": [DummyExtension]})
def test_component_class_lifecycle_hooks(self):
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
extension = cast(DummyExtension, app_settings.EXTENSIONS[4])
assert len(extension.calls["on_component_class_created"]) == 0
assert len(extension.calls["on_component_class_deleted"]) == 0
@ -297,7 +262,7 @@ class TestExtensionHooks:
@djc_test(components_settings={"extensions": [DummyExtension]})
def test_registry_lifecycle_hooks(self):
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
extension = cast(DummyExtension, app_settings.EXTENSIONS[4])
assert len(extension.calls["on_registry_created"]) == 0
assert len(extension.calls["on_registry_deleted"]) == 0
@ -334,7 +299,7 @@ class TestExtensionHooks:
return {"name": kwargs.get("name", "World")}
registry.register("test_comp", TestComponent)
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
extension = cast(DummyExtension, app_settings.EXTENSIONS[4])
# Verify on_component_registered was called
assert len(extension.calls["on_component_registered"]) == 1
@ -372,7 +337,7 @@ class TestExtensionHooks:
test_slots = {"content": "Some content"}
TestComponent.render(context=test_context, args=("arg1", "arg2"), kwargs={"name": "Test"}, slots=test_slots)
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
extension = cast(DummyExtension, app_settings.EXTENSIONS[4])
# Verify on_component_input was called with correct args
assert len(extension.calls["on_component_input"]) == 1
@ -421,7 +386,7 @@ class TestExtensionHooks:
slots={"content": "Some content"},
)
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
extension = cast(DummyExtension, app_settings.EXTENSIONS[4])
# Verify on_component_rendered was called with correct args
assert len(extension.calls["on_component_rendered"]) == 1
@ -450,7 +415,7 @@ class TestExtensionHooks:
assert rendered == "Hello Some content!"
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
extension = cast(DummyExtension, app_settings.EXTENSIONS[4])
# Verify on_slot_rendered was called with correct args
assert len(extension.calls["on_slot_rendered"]) == 1
@ -504,120 +469,6 @@ class TestExtensionHooks:
rendered = TestComponent.render(args=(), kwargs={"name": "Test"})
assert rendered == "<div>OVERRIDDEN: Hello Test!</div>"
@djc_test(components_settings={"extensions": [DummyExtension]})
def test_asset_hooks__inlined(self):
@register("test_comp_hooks")
class TestComponent(Component):
template = "Hello {{ name }}!"
js = "console.log('hi');"
css = "body { color: red; }"
def get_template_data(self, args, kwargs, slots, context):
return {"name": kwargs.get("name", "World")}
# Render the component to trigger all hooks
TestComponent.render(args=(), kwargs={"name": "Test"})
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
# on_template_loaded
assert len(extension.calls["on_template_loaded"]) == 1
ctx1: OnTemplateLoadedContext = extension.calls["on_template_loaded"][0]
assert ctx1.component_cls == TestComponent
assert ctx1.content == "Hello {{ name }}!"
assert isinstance(ctx1.origin, Origin)
assert ctx1.origin.name.endswith("test_extension.py::TestComponent")
assert ctx1.name is None
# on_template_compiled
assert len(extension.calls["on_template_compiled"]) == 1
ctx2: OnTemplateCompiledContext = extension.calls["on_template_compiled"][0]
assert ctx2.component_cls == TestComponent
assert isinstance(ctx2.template, Template)
# on_js_loaded
assert len(extension.calls["on_js_loaded"]) == 1
ctx3: OnJsLoadedContext = extension.calls["on_js_loaded"][0]
assert ctx3.component_cls == TestComponent
assert ctx3.content == "console.log('hi');"
# on_css_loaded
assert len(extension.calls["on_css_loaded"]) == 1
ctx4: OnCssLoadedContext = extension.calls["on_css_loaded"][0]
assert ctx4.component_cls == TestComponent
assert ctx4.content == "body { color: red; }"
@djc_test(components_settings={"extensions": [DummyExtension]})
def test_asset_hooks__file(self):
@register("test_comp_hooks")
class TestComponent(Component):
template_file = "relative_file/relative_file.html"
js_file = "relative_file/relative_file.js"
css_file = "relative_file/relative_file.css"
def get_template_data(self, args, kwargs, slots, context):
return {"name": kwargs.get("name", "World")}
# Render the component to trigger all hooks
TestComponent.render(args=(), kwargs={"name": "Test"})
extension = cast(DummyExtension, app_settings.EXTENSIONS[5])
# on_template_loaded
# NOTE: The template file gets picked up by 'django.template.loaders.filesystem.Loader',
# as well as our own loader, so we get two calls here.
assert len(extension.calls["on_template_loaded"]) == 2
ctx1: OnTemplateLoadedContext = extension.calls["on_template_loaded"][0]
assert ctx1.component_cls == TestComponent
assert ctx1.content == (
'<form method="post">\n'
' {% csrf_token %}\n'
' <input type="text" name="variable" value="{{ variable }}">\n'
' <input type="submit">\n'
'</form>\n'
)
assert isinstance(ctx1.origin, Origin)
assert ctx1.origin.name.endswith("relative_file.html")
assert ctx1.name == "relative_file/relative_file.html"
# on_template_compiled
assert len(extension.calls["on_template_compiled"]) == 2
ctx2: OnTemplateCompiledContext = extension.calls["on_template_compiled"][0]
assert ctx2.component_cls == TestComponent
assert isinstance(ctx2.template, Template)
# on_js_loaded
assert len(extension.calls["on_js_loaded"]) == 1
ctx3: OnJsLoadedContext = extension.calls["on_js_loaded"][0]
assert ctx3.component_cls == TestComponent
assert ctx3.content == 'console.log("JS file");\n'
# on_css_loaded
assert len(extension.calls["on_css_loaded"]) == 1
ctx4: OnCssLoadedContext = extension.calls["on_css_loaded"][0]
assert ctx4.component_cls == TestComponent
assert ctx4.content == (
'.html-css-only {\n'
' color: blue;\n'
'}\n'
)
@djc_test(components_settings={"extensions": [OverrideAssetExtension]})
def test_asset_hooks_override(self):
@register("test_comp_override")
class TestComponent(Component):
template = "Hello {{ name }}!"
js = "console.log('hi');"
css = "body { color: red; }"
def get_template_data(self, args, kwargs, slots, context):
return {"name": kwargs.get("name", "World")}
# No need to render, accessing the attributes should trigger the hooks
assert TestComponent.template == "OVERRIDDEN TEMPLATE"
assert TestComponent.js == "OVERRIDDEN JS"
assert TestComponent.css == "OVERRIDDEN CSS"
@djc_test
class TestExtensionViews:

View file

@ -96,19 +96,3 @@ class TestTemplateSignal:
templates_used = _get_templates_used_to_render(template)
assert "slotted_template.html" in templates_used
assert "simple_template.html" in templates_used
@djc_test(parametrize=PARAMETRIZE_CONTEXT_BEHAVIOR)
@with_template_signal
def test_template_rendered_skipped_when_no_template(self, components_settings):
class EmptyComponent(Component):
pass
registry.register("empty", EmptyComponent)
template_str: types.django_html = """
{% load component_tags %}
{% component 'empty' / %}
"""
template = Template(template_str, name="root")
templates_used = _get_templates_used_to_render(template)
assert templates_used == ["root"]

View file

@ -25,17 +25,6 @@ def gen_blocked_and_slotted_component():
return BlockedAndSlottedComponent
def gen_component_inside_include():
class ComponentInsideInclude(Component):
template: types.django_html = """<div>Hello</div>"""
class Media:
css = "style.css"
js = "script.js"
return ComponentInsideInclude
#######################
# TESTS
#######################
@ -547,112 +536,6 @@ class TestExtendsCompat:
"""
assertHTMLEqual(rendered, expected)
# In this case, `{% include %}` is NOT nested inside a `{% component %}` tag.
# We need to ensure that the component inside the `{% include %}` is rendered as if with deps_strategy="ignore",
# so the parent template decides how to render the JS/CSS.
# See https://github.com/django-components/django-components/issues/1296
@djc_test(parametrize=PARAMETRIZE_CONTEXT_BEHAVIOR)
def test_component_with_media_inside_include(self, components_settings):
registry.register("test_component", gen_component_inside_include())
template: types.django_html = """
{% load component_tags %}
<body>
<outer>
{% include "component_inside_include_sub.html" %}
</outer>
</body>
"""
rendered_raw = Template(template).render(Context({"DJC_DEPS_STRATEGY": "ignore"}))
expected_raw = """
<body>
<outer>
<div data-djc-id-ca1bc3f>Hello</div>
</outer>
</body>
"""
assertHTMLEqual(rendered_raw, expected_raw)
template_obj = Template(template)
context = Context()
rendered = template_obj.render(context)
# NOTE: It's important that the <script> tags are rendered outside of <div> and <outer> tags,
# because that tells us that the JS/CSS is rendered by the parent template, not the component
# inside the include.
expected = """
<body>
<outer>
<div data-djc-id-ca1bc41>Hello</div>
</outer>
<script src="django_components/django_components.min.js"></script>
<script type="application/json" data-djc>{"loadedCssUrls": ["c3R5bGUuY3Nz"],
"loadedJsUrls": ["c2NyaXB0Lmpz"],
"toLoadCssTags": [],
"toLoadJsTags": []}</script>
<script src="script.js"></script>
</body>
"""
assertHTMLEqual(rendered, expected)
# In this case, because `{% include %}` is rendered inside a `{% component %}` tag,
# then the component inside the `{% include %}` knows it's inside another component.
# So it's always rendered as if with deps_strategy="ignore".
# See https://github.com/django-components/django-components/issues/1296
@djc_test(parametrize=PARAMETRIZE_CONTEXT_BEHAVIOR)
def test_component_with_media_inside_include_inside_component(self, components_settings):
registry.register("test_component", gen_component_inside_include())
@register("component_inside_include")
class CompInsideIncludeComponent(Component):
template: types.django_html = """
<body>
<outer>
{% include "component_inside_include_sub.html" %}
</outer>
</body>
"""
template: types.django_html = """
{% load component_tags %}
<html>
{% component "component_inside_include" / %}
</html>
"""
rendered_raw = Template(template).render(Context({"DJC_DEPS_STRATEGY": "ignore"}))
expected_raw = """
<html>
<body data-djc-id-ca1bc3f>
<outer>
<div data-djc-id-ca1bc41>Hello</div>
</outer>
</body>
</html>
"""
assertHTMLEqual(rendered_raw, expected_raw)
template_obj = Template(template)
context = Context()
rendered = template_obj.render(context)
expected = """
<html>
<body data-djc-id-ca1bc43>
<outer>
<div data-djc-id-ca1bc45>Hello</div>
</outer>
<script src="django_components/django_components.min.js"></script>
<script type="application/json" data-djc>{"loadedCssUrls": ["c3R5bGUuY3Nz"],
"loadedJsUrls": ["c2NyaXB0Lmpz"],
"toLoadCssTags": [],
"toLoadJsTags": []}</script>
<script src="script.js"></script>
</body>
</html>
"""
assertHTMLEqual(rendered, expected)
@djc_test(parametrize=PARAMETRIZE_CONTEXT_BEHAVIOR)
def test_component_inside_block(self, components_settings):
registry.register("slotted_component", gen_slotted_component())