本文介绍了Django REST框架：在删除之前验证的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想在对象被删除之前运行一个验证，以防在某些情况下被删除并作为验证错误返回。我怎么做？我目前看起来不是正确的：
I want to run a validation before an object is deleted, to prevent deletion in certain cases and return as a validation error. How do I do that? What I have currently doesn't seem right:
class CallDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = XCall.objects.all()
serializer_class = CallSerializer
...
def pre_delete(self, obj):
if obj.survey:
raise serializers.ValidationError("Too late to delete")
推荐答案
提出一个 ValidationError ，我只会提出一个或适合错误描述的其他自定义错误：
Rather than raising a ValidationError, I will just raise a ParseError or another custom error that fits the error description:
from rest_framework import exceptions
def pre_delete(self, obj):
if obj.survey:
raise exceptions.ParseError("Too late to delete")
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