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