DestroyAPIView Django REST验证 [英] DestroyAPIView Django rest validation
本文介绍了DestroyAPIView Django REST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
class DeleteLedgerCategory(DestroyAPIView):
serializer_class = CategorySerializer
permission_classes = [IsAuthenticated]
def get_queryset(self):
queryset = Category.objects.filter(company = self.request.user.currently_activated_company, id=self.kwargs['pk'])
return queryset
def preform_destroy(self, instance):
if instance.is_default == True:
raise ValueError("Cannot delete default system category")
return instance.delete()
在上述基于类的视图中。我需要添加自定义验证错误消息。即。 if instance.is_default == True：引发错误...，并且仅当没有错误遇到时才允许删除实例。如果有任何不清楚的问题。做评论
In above class based view. I need to add custom validation error message. ie. if instance.is_default == True: raise error... and only allow to delete the instance if no error encounters. If any unclear question. Do comment
推荐答案
您可以在 destroy 方法：
from rest_framework.response import Response
class DeleteLedgerCategory(DestroyAPIView):
serializer_class = CategorySerializer
permission_classes = [IsAuthenticated]
def get_queryset(self):
queryset = Category.objects.filter(company = self.request.user.currently_activated_company, id=self.kwargs['pk'])
return queryset
def destroy(self, request, *args, **kwargs):
instance = self.get_object()
if instance.is_default == True:
return Response("Cannot delete default system category", status=status.HTTP_400_BAD_REQUEST)
self.perform_destroy(instance)
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