python - 使用 Django Rest Framework 订购带有排序查询参数的detail_route

Question

在如下所示的 detail_route 方法中，我如何支持使用 ordering 查询参数对事件进行排序，如下所示:

http://localhost.com/items/123/events?ordering=EventDateTime

class ItemViewSet(viewsets.ModelViewSet):

    queryset = Item.objects.all()
    serializer_class = ItemSerializer
    filter_backends = (
        filters.OrderingFilter
    )
    ordering_fields = ('Label')

    @detail_route()
    def events(self, request, pk=None):
        item = self.get_object()
        events = item.events.all()
        page = self.paginate_queryset(events)
        if page is not None:
            serializers = EventSerializer(page, many=True, context={'request': request})
            return self.get_paginated_response(serializers.data)
        serializers = EventSerializer(events, many=True, context={'request': request})
        return Response(serializers.data)

我尝试了以下方法，但没有任何结果:

@detail_route()
def events(self, request, pk=None):
    item = self.get_object()
    events = filters.OrderingFilter().filter_queryset(request, item.events.all(), self)
    page = self.paginate_queryset(events)
    if page is not None:
        serializers = EventSerializer(page, many=True, context={'request': request})
        return self.get_paginated_response(serializers.data)
    serializers = EventSerializer(events, many=True, context={'request': request})
    return Response(serializers.data)

Answer 1

正如汤男孩建议的那样。您需要将 EventDateTime 添加到 ItemViewSet 中的 ordering_fields 中。