Django REST framework删除对象后无法返回自定义成功消息如何解决

问题根源 #

perform_destroy方法仅用于执行删除实例的逻辑，DRF内置的DestroyAPIView的destroy方法不会接收该方法的返回值，删除完成后默认直接返回204 No Content空响应，因此你在perform_destroy中定义的Response不会生效。

修复代码 #

直接重写视图的destroy方法，替换默认响应逻辑即可，修改后代码如下：

from rest_framework.response import Response
from rest_framework import status

class UpdateOrderView(UpdateAPIView, DestroyAPIView):
    permission_classes = [AllowAny]
    queryset = Order.objects.all()
    serializer_class = OrderUpdateSerializer

    def destroy(self, request, *args, **kwargs):
        instance = self.get_object()
        delete_count, _ = instance.delete()
        if delete_count > 0:
            return Response(
                {"message": "Order deleted successfully"},
                status=status.HTTP_200_OK
            )
        return Response(
            {"message": "Order deletion failed"},
            status=status.HTTP_400_BAD_REQUEST
        )

如果不需要额外判断删除结果，直接返回成功响应也可以简化写法：

def destroy(self, request, *args, **kwargs):
    instance = self.get_object()
    self.perform_destroy(instance)
    return Response(
        {"message": "Order deleted successfully"},
        status=status.HTTP_200_OK
    )

内容的提问来源于stack exchange，提问作者Reactoo