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# 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 __iter__(self):
# To fix 'item in perms.someapp' and __getitem__ iteraction we need to
# define __iter__. See #18979 for details.
raise TypeError("PermLookupDict is not iterable.")
def __bool__(self):
return self.user.has_module_perms(self.module_name)
__nonzero__ = __bool__ # Python 2
class PermWrapper(object):
def __init__(self, user):
self.user = user
def __getitem__(self, module_name):
return PermLookupDict(self.user, module_name)
def __iter__(self):
# I am large, I contain multitudes.
raise TypeError("PermWrapper is not iterable.")
def __contains__(self, perm_name):
Lookup by "someapp" or "someapp.someperm" in perms.
if '.' not in perm_name:
# The name refers to module.
return bool(self[perm_name])
module_name, perm_name = perm_name.split('.', 1)
return self[module_name][perm_name]
def auth(request):
Returns context variables required by apps that use Django's authentication
If there is no 'user' attribute in the request, uses AnonymousUser (from
if hasattr(request, 'user'):
user = request.user
from django.contrib.auth.models import AnonymousUser
user = AnonymousUser()
return {
'user': user,
'perms': PermWrapper(user),
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