          if isinstance(ordering, six.string_types):
              return (ordering,)
          return ordering
  
      def remove_invalid_fields(self, queryset, ordering, view):
          valid_fields = getattr(view, 'ordering_fields', self.ordering_fields)
  
          if valid_fields is None:
              # Default to allowing filtering on serializer fields
              serializer_class = getattr(view, 'serializer_class')
 
</s> remove             return [param.strip() for param in params.split(',')]
 </s> add             fields = [param.strip() for param in params.split(',')]
            ordering = self.remove_invalid_fields(queryset, fields, view)
            if ordering:
                return ordering

        # No ordering was included, or all the ordering fields were invalid
        return self.get_default_ordering(view) </s> remove         return [term for term in ordering if term.lstrip('-') in valid_fields]
 </s> add         return [term for term in fields if term.lstrip('-') in valid_fields] </s> remove         ordering = self.get_ordering(request)

        if ordering:
            # Skip any incorrect parameters
            ordering = self.remove_invalid_fields(queryset, ordering, view)

        if not ordering:
            # Use 'ordering' attribute by default
            ordering = self.get_default_ordering(view)
 </s> add         ordering = self.get_ordering(request, queryset, view) </s> remove         self.ordering = self.get_ordering(view)
 </s> add         self.ordering = self.get_ordering(request, queryset, view) </s> remove     def get_ordering(self, request):
 </s> add     def get_ordering(self, request, queryset, view):
    def remove_invalid_fields(self, queryset, fields, view):
          if isinstance(ordering, six.string_types):
              return (ordering,)
          return ordering
  
    def remove_invalid_fields(self, queryset, fields, view):
          valid_fields = getattr(view, 'ordering_fields', self.ordering_fields)
  
          if valid_fields is None:
              # Default to allowing filtering on serializer fields
              serializer_class = getattr(view, 'serializer_class')
keep keep keep keep replace keep keep keep keep keep
 Cursor pagination now works with OrderingFilter 
rest_framework/filters.py