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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 setting TEMPLATE_CONTEXT_PROCESSORS and used by
RequestContext.
"""
from django.conf import settings
def auth(request):
"""
Returns context variables required by apps that use Django's authentication
system.
"""
return {
'user': request.user,
'messages': request.user.get_and_delete_messages(),
'perms': PermWrapper(request.user),
}
def debug(request):
"Returns 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 connection
context_extras['sql_queries'] = connection.queries
return context_extras
def i18n(request):
context_extras = {}
context_extras['LANGUAGES'] = settings.LANGUAGES
if hasattr(request, 'LANGUAGE_CODE'):
context_extras['LANGUAGE_CODE'] = request.LANGUAGE_CODE
else:
context_extras['LANGUAGE_CODE'] = settings.LANGUAGE_CODE
from django.utils import translation
context_extras['LANGUAGE_BIDI'] = translation.get_language_bidi()
return context_extras
def request(request):
return {'request': request}
# PermWrapper and PermLookupDict proxy the permissions system into objects that
# the template system can understand.
class PermLookupDict(object):
def __init__(self, user, module_name):
self.user, self.module_name = user, module_name
def __repr__(self):
return str(self.user.get_all_permissions())
def __getitem__(self, perm_name):
return self.user.has_perm("%s.%s" % (self.module_name, perm_name))
def __nonzero__(self):
return self.user.has_module_perms(self.module_name)
class PermWrapper(object):
def __init__(self, user):
self.user = user
def __getitem__(self, module_name):
return PermLookupDict(self.user, module_name)
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