Fix chicken & egg problem for permissions when the dataset doesn't exists.

mayan/apps/acls/classes.py

@@ -2,6 +2,8 @@ from __future__ import unicode_literals, absolute_import
 
 import logging
 
+from permissions.models import StoredPermission
+
 logger = logging.getLogger(__name__)
 
 
@@ -12,11 +14,10 @@ class ModelPermission(object):
     def register(cls, model, permissions):
         cls._registry.setdefault(model, [])
         for permission in permissions:
-            cls._registry[model].append(permission.stored_permission.pk)
+            cls._registry[model].append(permission)
 
     @classmethod
     def get_for_instance(cls, instance):
-        from permissions.models import StoredPermission
-
-        pks = cls._registry.get(type(instance), ())
+        permissions = cls._registry.get(type(instance), ())
+        pks = [permission.stored_permission.pk for permission in permissions]
         return StoredPermission.objects.filter(pk__in=pks)