Added permission app

apps/member/backends.py

@@ -0,0 +1,33 @@
+from django.contribs.contenttype.models import ContentType
+from member.models import Club, Membership, RolePermissions
+
+
+class PermissionBackend(object):
+    supports_object_permissions = True
+    supports_anonymous_user = False
+    supports_inactive_user = False
+
+    def authenticate(self, username, password):
+        return None
+
+    def permissions(self, user, obj):
+        for membership in user.memberships.all():
+            if not membership.valid() or membership.role is None:
+                continue
+            for permission in RolePermissions.objects.get(role=membership.role).permissions.objects.all():
+                permission = permission.about(user=user, club=membership.club)
+                yield permission
+
+    def has_perm(self, user_obj, perm, obj=None):
+        if obj is None:
+            return False
+        perm = perm.split('_')
+        perm_type = perm[1]
+        perm_field = perm[2] if len(perm) == 3 else None
+        return any(permission.applies(obj, perm_type, perm_field) for obj in self.permissions(user_obj, obj))
+
+    def get_all_permissions(self, user_obj, obj=None):
+        if obj is None:
+            return []
+        else:
+            return list(self.permissions(user_obj, obj))