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feat(templatetags): fix #143, ability to preload components

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This commit is contained in:
David Guillot 2022-04-28 19:45:11 +02:00
parent 021339d4a7
commit f67cd37dea
2 changed files with 107 additions and 6 deletions
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53
django_components/templatetags/component_tags.py
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@ -30,13 +30,36 @@ def get_components_from_registry(registry):
return components
def get_components_from_preload_str(preload_str):
"""Returns a list of unique components from a comma-separated str"""
components = []
for component_name in preload_str.split(","):
component_name = component_name.strip()
if not component_name:
continue
component_class = registry.get(component_name)
components.append(component_class(component_name))
return components
@register.simple_tag(name="component_dependencies")
def component_dependencies_tag():
def component_dependencies_tag(preload=""):
"""Marks location where CSS link and JS script tags should be rendered."""
if is_dependency_middleware_active():
preloaded_dependencies = []
for component in get_components_from_preload_str(preload):
preloaded_dependencies.append(
RENDERED_COMMENT_TEMPLATE.format(
name=component._component_name
)
)
return mark_safe(
CSS_DEPENDENCY_PLACEHOLDER + JS_DEPENDENCY_PLACEHOLDER
"\n".join(preloaded_dependencies)
+ CSS_DEPENDENCY_PLACEHOLDER
+ JS_DEPENDENCY_PLACEHOLDER
)
else:
rendered_dependencies = []
@ -47,11 +70,20 @@ def component_dependencies_tag():
@register.simple_tag(name="component_css_dependencies")
def component_css_dependencies_tag():
def component_css_dependencies_tag(preload=""):
"""Marks location where CSS link tags should be rendered."""
if is_dependency_middleware_active():
return mark_safe(CSS_DEPENDENCY_PLACEHOLDER)
preloaded_dependencies = []
for component in get_components_from_preload_str(preload):
preloaded_dependencies.append(
RENDERED_COMMENT_TEMPLATE.format(
name=component._component_name
)
)
return mark_safe(
"\n".join(preloaded_dependencies) + CSS_DEPENDENCY_PLACEHOLDER
)
else:
rendered_dependencies = []
for component in get_components_from_registry(registry):
@ -61,11 +93,20 @@ def component_css_dependencies_tag():
@register.simple_tag(name="component_js_dependencies")
def component_js_dependencies_tag():
def component_js_dependencies_tag(preload=""):
"""Marks location where JS script tags should be rendered."""
if is_dependency_middleware_active():
return mark_safe(JS_DEPENDENCY_PLACEHOLDER)
preloaded_dependencies = []
for component in get_components_from_preload_str(preload):
preloaded_dependencies.append(
RENDERED_COMMENT_TEMPLATE.format(
name=component._component_name
)
)
return mark_safe(
"\n".join(preloaded_dependencies) + JS_DEPENDENCY_PLACEHOLDER
)
else:
rendered_dependencies = []
for component in get_components_from_registry(registry):