Merge pull request #529 in RMS/api-main-service from gladys-dev2 to RMSv2

* commit '389a0fbc':
  try select_related

app/applicationlayer/cms/form/header/views.py

@@ -90,7 +90,9 @@ VENDOR_REJECT_MESSAGE = settings.VENDOR_REJECT_MESSAGE
 
 class ChangeRequestFormsViewset(viewsets.ModelViewSet):
 
-    queryset = models.ChangeRequestFormHeader.objects.all()
+    queryset = models.ChangeRequestFormHeader.objects.select_related(
+        'requested_by_user', 'requested_by_department', 'template_no'
+    ).all()
     serializer_class = ChangeRequestFormHeaderSerializer
     pagination_class = CustomPagination
     lookup_field = 'form_code'