Commit after updating status

atst/domain/requests/requests.py

@@ -99,7 +99,7 @@ class Requests(object):
             new_status=status, revision=request.latest_revision
         )
         request.status_events.append(status_event)
-        return request
+        return RequestsQuery.add_and_commit(request)
 
     @classmethod
     def should_auto_approve(cls, request):

atst/models/request.py

@@ -119,11 +119,11 @@ class Request(Base, mixins.TimestampsMixin, mixins.AuditableMixin):
 
     @property
     def latest_status(self):
-        return self.status_events[-1]
+        return self.status_events[-1] if self.status_events else None
 
     @property
     def status(self):
-        return self.latest_status.new_status
+        return self.latest_status.new_status if self.latest_status else None
 
     @property
     def status_displayname(self):