Amend regex

Author: ddelange

rest_framework/pagination.py

@@ -633,7 +633,9 @@ def paginate_queryset(self, queryset, request, view=None):
                 kwargs = {order_attr + '__gt': current_position}
 
             # If some records contain a null for the ordering field, don't lose them.
-            filter_query = Q(**kwargs) | Q(**{order_attr + '__isnull': True})
+            filter_query = Q(**kwargs)
+            if reverse:
+                filter_query |= Q(**{order_attr + '__isnull': True})
             queryset = queryset.filter(filter_query)
 
         # If we have an offset cursor then offset the entire page by that amount.