mirror of
https://github.com/wrabit/django-cotton.git
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77 lines
2.6 KiB
Python
77 lines
2.6 KiB
Python
"""
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django-cotton
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App configuration to set up the cotton loader and builtins automatically.
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"""
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from contextlib import suppress
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import django.contrib.admin
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import django.template
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from django.apps import AppConfig
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from django.conf import settings
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def wrap_loaders(name):
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for template_config in settings.TEMPLATES:
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engine_name = template_config.get("NAME")
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if not engine_name:
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engine_name = template_config["BACKEND"].split(".")[-2]
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if engine_name == name:
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loaders = template_config.setdefault("OPTIONS", {}).get("loaders", [])
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loaders_already_configured = (
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loaders
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and isinstance(loaders, (list, tuple))
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and isinstance(loaders[0], (tuple, list))
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and loaders[0][0] == "django.template.loaders.cached.Loader"
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and "django_cotton.cotton_loader.Loader" in loaders[0][1]
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)
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if not loaders_already_configured:
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template_config.pop("APP_DIRS", None)
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default_loaders = [
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"django_cotton.cotton_loader.Loader",
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"django.template.loaders.filesystem.Loader",
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"django.template.loaders.app_directories.Loader",
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]
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cached_loaders = [("django.template.loaders.cached.Loader", default_loaders)]
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template_config["OPTIONS"]["loaders"] = cached_loaders
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options = template_config.setdefault("OPTIONS", {})
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builtins = options.setdefault("builtins", [])
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builtins_already_configured = (
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builtins and "django_cotton.templatetags.cotton" in builtins
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)
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if not builtins_already_configured:
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template_config["OPTIONS"]["builtins"].insert(
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0, "django_cotton.templatetags.cotton"
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)
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break
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# Force re-evaluation of settings.TEMPLATES because EngineHandler caches it.
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with suppress(AttributeError):
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del django.template.engines.templates
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django.template.engines._engines = {}
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class LoaderAppConfig(AppConfig):
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"""
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This, the default configuration, does the automatic setup of a partials loader.
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"""
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name = "django_cotton"
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default = True
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def ready(self):
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wrap_loaders("django")
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class SimpleAppConfig(AppConfig):
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"""
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This, the non-default configuration, allows the user to opt-out of the automatic configuration. They just need to
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add "django_cotton.apps.SimpleAppConfig" to INSTALLED_APPS instead of "django_cotton".
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"""
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name = "django_cotton"
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