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- """
- A set of request processors that return dictionaries to be merged into a
- template context. Each function takes the request object as its only parameter
- and returns a dictionary to add to the context.
- These are referenced from the 'context_processors' option of the configuration
- of a DjangoTemplates backend and used by RequestContext.
- """
- import itertools
- from django.conf import settings
- from django.middleware.csrf import get_token
- from django.utils.functional import SimpleLazyObject, lazy
- def csrf(request):
- """
- Context processor that provides a CSRF token, or the string 'NOTPROVIDED' if
- it has not been provided by either a view decorator or the middleware
- """
- def _get_val():
- token = get_token(request)
- if token is None:
- # In order to be able to provide debugging info in the
- # case of misconfiguration, we use a sentinel value
- # instead of returning an empty dict.
- return "NOTPROVIDED"
- else:
- return token
- return {"csrf_token": SimpleLazyObject(_get_val)}
- def debug(request):
- """
- Return context variables helpful for debugging.
- """
- context_extras = {}
- if settings.DEBUG and request.META.get("REMOTE_ADDR") in settings.INTERNAL_IPS:
- context_extras["debug"] = True
- from django.db import connections
- # Return a lazy reference that computes connection.queries on access,
- # to ensure it contains queries triggered after this function runs.
- context_extras["sql_queries"] = lazy(
- lambda: list(
- itertools.chain.from_iterable(
- connections[x].queries for x in connections
- )
- ),
- list,
- )
- return context_extras
- def i18n(request):
- from django.utils import translation
- return {
- "LANGUAGES": settings.LANGUAGES,
- "LANGUAGE_CODE": translation.get_language(),
- "LANGUAGE_BIDI": translation.get_language_bidi(),
- }
- def tz(request):
- from django.utils import timezone
- return {"TIME_ZONE": timezone.get_current_timezone_name()}
- def static(request):
- """
- Add static-related context variables to the context.
- """
- return {"STATIC_URL": settings.STATIC_URL}
- def media(request):
- """
- Add media-related context variables to the context.
- """
- return {"MEDIA_URL": settings.MEDIA_URL}
- def request(request):
- return {"request": request}
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