django 1.11: adapt migration and model (#21489)

src/authentic2/a2_rbac/apps.py

@@ -33,3 +33,6 @@ class Authentic2RBACConfig(AppConfig):
         post_migrate.connect(
             signal_handlers.create_default_permissions,
             sender=self)
+        post_migrate.connect(
+            signal_handlers.post_migrate_update_rbac,
+            sender=self)

src/authentic2/a2_rbac/management.py

@@ -125,7 +125,3 @@ def update_content_types_roles():
             ct_admin_role.permissions.add(view_user_perm)
         ct_admin_role.permissions.add(search_ou_perm)
         ct_admin_role.add_child(admin_role)
-
-post_migrate.connect(
-    signal_handlers.post_migrate_update_rbac,
-    sender=apps.get_app_config('a2_rbac'))

src/authentic2/custom_user/migrations/0002_auto_20150410_1823.py

@@ -13,6 +13,8 @@ class ThirdPartyAlterField(migrations.AlterField):
         super(ThirdPartyAlterField, self).state_forwards(self.app_label, state)
 
     def database_forwards(self, app_label, schema_editor, from_state, to_state):
+        if hasattr(from_state, 'clear_delayed_apps_cache'):
+            from_state.clear_delayed_apps_cache()
         super(ThirdPartyAlterField, self).database_forwards(self.app_label,
                 schema_editor, from_state, to_state)
 

src/authentic2/migrations/__init__.py

@@ -44,6 +44,8 @@ class CreatePartialIndexes(Operation):
         pass
 
     def database_forwards(self, app_label, schema_editor, from_state, to_state):
+        if hasattr(from_state, 'clear_delayed_apps_cache'):
+            from_state.clear_delayed_apps_cache()
         if not self.allowed(app_label, schema_editor, to_state):
             return
         for i, (where, non_null_columns) in enumerate(self.indexes()):

src/django_rbac/models.py

@@ -125,7 +125,7 @@ Operation._meta.natural_key = ['slug']
 
 class PermissionAbstractBase(models.Model):
     operation = models.ForeignKey(
-        to='Operation',
+        to=Operation,
         verbose_name=_('operation'))
     ou = models.ForeignKey(
         to=utils.get_ou_model_name(),