news ordering

apps/news/views.py

@@ -3,6 +3,8 @@ from django.conf import settings
 from django.shortcuts import get_object_or_404
 from django.utils import translation
 from rest_framework import generics, permissions, response
+from rest_framework.filters import OrderingFilter
+from django_filters.rest_framework import DjangoFilterBackend
 
 from news import filters, models, serializers
 from rating.tasks import add_rating
@@ -111,9 +113,11 @@ class NewsBackOfficeLCView(NewsBackOfficeMixinView,
     serializer_class = serializers.NewsBackOfficeBaseSerializer
     filter_class = filters.NewsListFilterSet
     create_serializers_class = serializers.NewsBackOfficeDetailSerializer
-
+    filter_backends = (OrderingFilter, DjangoFilterBackend)
     permission_classes = [IsCountryAdmin | IsContentPageManager]
 
+    ordering_fields = '__all__'
+
     def get_serializer_class(self):
         """Override serializer class."""
         if self.request.method == 'POST':
@@ -123,6 +127,15 @@ class NewsBackOfficeLCView(NewsBackOfficeMixinView,
     def get_queryset(self):
         """Override get_queryset method."""
         qs = super().get_queryset().with_extended_related()
+        if 'ordering' in self.request.query_params:
+            self.request.GET._mutable = True
+            if '-publication_datetime' in self.request.query_params['ordering']:
+                self.request.query_params['ordering'] = self.request.query_params['ordering']\
+                    .replace('-publication_datetime', '-publication_date,-publication_time')
+            elif 'publication_datetime' in self.request.query_params['ordering']:
+                self.request.query_params['ordering'] = self.request.query_params['ordering']\
+                    .replace('publication_datetime', 'publication_date,publication_time')
+            self.request.GET._mutable = False
         if self.request.country_code:
             qs = qs.by_country_code(self.request.country_code)
         return qs