Fix field error in Q expression

recircle/instance/models.py

@@ -178,7 +178,7 @@ class Instance(BaseMachineDescriptor):
     @classmethod
     def create(cls, lease, owner, flavor, template, remote_id, params):
         params["password"] = cls.generate_password()
-        inst = cls(lease=lease, flavor=flavor, owner=owner, system_type=template.system_type,
+        inst = cls(lease=lease, flavor=flavor, created_by=owner, system_type=template.system_type,
                    distro=template.distro, access_protocol=template.access_protocol,
                    remote_id=remote_id, template=template, status="CREATING",
                    **params)

recircle/instance/views.py

@@ -72,7 +72,7 @@ class InstanceViewSet(AuthorizationMixin, ViewSet):
                             status=status.HTTP_401_UNAUTHORIZED)
         params = request.data
         template = ImageTemplate.objects.get(Q(pk=params["template"]) &
-                                             (Q(owned_by=request.user) | Q(type="SYSTEM")))
+                                             (Q(created_by=request.user) | Q(type="SYSTEM")))
         if not template:
             return Response({"error": "No permission to use this template."},
                             status=status.HTTP_401_UNAUTHORIZED)