get news type default image query will be optimized

apps/news/models.py

@@ -49,6 +49,12 @@ class NewsBanner(ProjectBaseMixin, TranslatedFieldsMixin):
                                   blank=True, null=True, default=None)
 
 
+class NewsTypeQuerySet(models.QuerySet):
+    """QuerySet for model NewsType"""
+    def with_base_related(self):
+        return self.select_related('default_image')
+
+
 class NewsType(ProjectBaseMixin, TypeDefaultImageMixin):
     """NewsType model."""
 
@@ -61,6 +67,8 @@ class NewsType(ProjectBaseMixin, TypeDefaultImageMixin):
                                       blank=True, null=True, default=None,
                                       verbose_name='default image')
 
+    objects = NewsTypeQuerySet.as_manager()
+
     class Meta:
         """Meta class."""
 

apps/news/views.py

@@ -87,9 +87,12 @@ class NewsTypeListView(generics.ListAPIView):
 
     pagination_class = None
     permission_classes = (permissions.AllowAny,)
-    queryset = models.NewsType.objects.all()
     serializer_class = serializers.NewsTypeSerializer
 
+    def get_queryset(self):
+        """Override get_queryset method."""
+        return models.NewsType.objects.with_base_related()
+
 
 class NewsBackOfficeMixinView:
     """News back office mixin view."""