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