Change ordering format

apps/collection/filters.py

@@ -1,8 +0,0 @@
-from rest_framework import filters
-
-
-class CollectionBackOfficeOrderingFilter(filters.BaseFilterBackend):
-    """ Filter ordering """
-
-    def filter_queryset(self, request, queryset, view):
-        return queryset.order_by('rank', '-start')

apps/collection/views/back.py

@@ -1,8 +1,9 @@
+from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework import mixins
 from rest_framework import permissions
 from rest_framework import viewsets
+from rest_framework.filters import OrderingFilter
 
-from collection import filters
 from collection import models
 from collection.serializers import back as serializers
 from utils.views import BindObjectMixin
@@ -27,10 +28,13 @@ class CollectionBackOfficeViewSet(mixins.CreateModelMixin,
 
     permission_classes = (permissions.IsAuthenticated,)
     queryset = models.Collection.objects.all()
-    filter_backends = [filters.CollectionBackOfficeOrderingFilter]
+    filter_backends = [DjangoFilterBackend, OrderingFilter]
     serializer_class = serializers.CollectionBackOfficeSerializer
     bind_object_serializer_class = serializers.CollectionBindObjectSerializer
 
+    ordering_fields = ('rank', 'start')
+    ordering = ('-start', )
+
     def perform_binding(self, serializer):
         data = serializer.validated_data
         collection = data.pop('collection')