105 lines
3.3 KiB
Python
105 lines
3.3 KiB
Python
"""
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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 setting TEMPLATE_CONTEXT_PROCESSORS and used by
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RequestContext.
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"""
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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 lazy
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def auth(request):
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"""
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DEPRECATED. This context processor is the old location, and has been moved
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to `django.contrib.auth.context_processors`.
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This function still exists for backwards-compatibility; it will be removed
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in Django 1.4.
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"""
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import warnings
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warnings.warn(
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"The context processor at `django.core.context_processors.auth` is " \
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"deprecated; use the path `django.contrib.auth.context_processors.auth` " \
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"instead.",
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PendingDeprecationWarning
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)
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from django.contrib.auth.context_processors import auth as auth_context_processor
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return auth_context_processor(request)
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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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_get_val = lazy(_get_val, str)
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return {'csrf_token': _get_val() }
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def debug(request):
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"Returns context variables helpful for debugging."
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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 connection
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context_extras['sql_queries'] = connection.queries
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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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context_extras = {}
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context_extras['LANGUAGES'] = settings.LANGUAGES
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context_extras['LANGUAGE_CODE'] = translation.get_language()
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context_extras['LANGUAGE_BIDI'] = translation.get_language_bidi()
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return context_extras
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def media(request):
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"""
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Adds 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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# PermWrapper and PermLookupDict proxy the permissions system into objects that
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# the template system can understand.
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class PermLookupDict(object):
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def __init__(self, user, module_name):
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self.user, self.module_name = user, module_name
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def __repr__(self):
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return str(self.user.get_all_permissions())
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def __getitem__(self, perm_name):
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return self.user.has_perm("%s.%s" % (self.module_name, perm_name))
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def __nonzero__(self):
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return self.user.has_module_perms(self.module_name)
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class PermWrapper(object):
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def __init__(self, user):
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self.user = user
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def __getitem__(self, module_name):
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return PermLookupDict(self.user, module_name)
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def __iter__(self):
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# I am large, I contain multitudes.
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raise TypeError("PermWrapper is not iterable.")
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