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111 lines
3.1 KiB
111 lines
3.1 KiB
import functools
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import warnings
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from pathlib import Path
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from django.conf import settings
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from django.template.backends.django import DjangoTemplates
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from django.template.loader import get_template
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from django.utils.deprecation import RemovedInDjango60Warning
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from django.utils.functional import cached_property
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from django.utils.module_loading import import_string
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@functools.lru_cache
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def get_default_renderer():
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renderer_class = import_string(settings.FORM_RENDERER)
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return renderer_class()
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class BaseRenderer:
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form_template_name = "django/forms/div.html"
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formset_template_name = "django/forms/formsets/div.html"
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field_template_name = "django/forms/field.html"
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def get_template(self, template_name):
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raise NotImplementedError("subclasses must implement get_template()")
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def render(self, template_name, context, request=None):
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template = self.get_template(template_name)
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return template.render(context, request=request).strip()
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class EngineMixin:
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def get_template(self, template_name):
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return self.engine.get_template(template_name)
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@cached_property
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def engine(self):
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return self.backend(
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{
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"APP_DIRS": True,
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"DIRS": [Path(__file__).parent / self.backend.app_dirname],
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"NAME": "djangoforms",
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"OPTIONS": {},
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}
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)
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class DjangoTemplates(EngineMixin, BaseRenderer):
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"""
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Load Django templates from the built-in widget templates in
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django/forms/templates and from apps' 'templates' directory.
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"""
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backend = DjangoTemplates
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class Jinja2(EngineMixin, BaseRenderer):
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"""
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Load Jinja2 templates from the built-in widget templates in
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django/forms/jinja2 and from apps' 'jinja2' directory.
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"""
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@cached_property
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def backend(self):
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from django.template.backends.jinja2 import Jinja2
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return Jinja2
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# RemovedInDjango60Warning.
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class DjangoDivFormRenderer(DjangoTemplates):
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"""
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Load Django templates from django/forms/templates and from apps'
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'templates' directory and use the 'div.html' template to render forms and
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formsets.
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"""
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def __init__(self, *args, **kwargs):
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warnings.warn(
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"The DjangoDivFormRenderer transitional form renderer is deprecated. Use "
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"DjangoTemplates instead.",
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RemovedInDjango60Warning,
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)
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super().__init__(*args, **kwargs)
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# RemovedInDjango60Warning.
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class Jinja2DivFormRenderer(Jinja2):
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"""
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Load Jinja2 templates from the built-in widget templates in
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django/forms/jinja2 and from apps' 'jinja2' directory.
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"""
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def __init__(self, *args, **kwargs):
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warnings.warn(
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"The Jinja2DivFormRenderer transitional form renderer is deprecated. Use "
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"Jinja2 instead.",
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RemovedInDjango60Warning,
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)
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super().__init__(*args, **kwargs)
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class TemplatesSetting(BaseRenderer):
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"""
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Load templates using template.loader.get_template() which is configured
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based on settings.TEMPLATES.
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"""
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def get_template(self, template_name):
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return get_template(template_name)
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