def _get_trusts(obj):
if not Content.is_content(obj):
return []
trusts = Trust.objects.filter_by_content(obj)
if trusts is None:
return []
if not hasattr(trusts, '__iter__'):
trusts = [trusts]
return trusts
def get_group_permissions(self, user_obj, obj=None):
"""
Returns a set of permission strings that this user has through his/her
groups.
"""
if user_obj.is_anonymous() or obj is None:
return super(TrustModelBackendMixin, self).get_group_permissions(user_obj, obj)
if Content.is_content(obj):
filter = self.perm_model.objects.filter
return filter(group__trusts__in=self._get_trusts(obj), group__user=user_obj)
return []
