dnscms: prefetch images and related objects that GraphQL listings resolve per item

dnscms/news/models.py

@@ -13,7 +13,9 @@ from dnscms.wordpress.models import DeferWPFieldsManagerMixin, WPImportedPageMix
 
 
 class NewsPageManager(DeferWPFieldsManagerMixin, PageManager):
-    pass
+    def get_queryset(self):
+        # GraphQL lists load these through here; saves a query per item
+        return super().get_queryset().prefetch_related("featured_image")
 
 
 @register_singular_query_field("newsIndex")