[英]Django: Custom permission has no effect and check within view returns error
我有一个具有自定义权限类TransactionCreatorIsSenderOrAdmin
的通用视图( CreateAPIView
),但它对视图根本没有影响,即使权限类只包含return False
。 我认为原因在文档中说明:
另请注意,通用视图只会检查检索单个模型实例的视图的对象级权限。 如果您需要对列表视图进行对象级过滤,则需要单独过滤查询集。 有关更多详细信息,请参阅过滤文档。
由于我正在检索多个模型实例,因此我的方法是在视图本身的 perform_create 中进行检查,但我收到一个错误,我不确定为什么,因为它在没有权限检查的情况下工作。 这是错误:
Exception Type: AttributeError
Exception Value: 'collections.OrderedDict' object has no attribute 'date'
Exception Location: .../transactions/api/serializers.py in get_date, line 17
这是我的观点:
class TransactionCreateAPIView(generics.CreateAPIView):
queryset = Transaction.objects.all()
serializer_class = TransactionSerializer
permission_classes = [IsAuthenticated, TransactionCreatorIsSenderOrAdmin]
def perform_create(self, serializer):
amount = self.request.data['amount']
message = self.request.data['message']
from_account_iban = self.request.data['from_account']
from_account_obj = BankAccount.objects.get(iban=from_account_iban)
to_account_iban = self.request.data['to_account']
to_account_obj = BankAccount.objects.get(iban=to_account_iban)
if from_account_obj.user == self.request.user or self.request.user.is_staff == True:
serializer.save(amount=Decimal(amount),
from_account=from_account_obj,
to_account=to_account_obj,
message=message)
else:
return Response(serializer.errors, status=403)
这是序列化程序:
class TransactionSerializer(serializers.ModelSerializer):
date = serializers.SerializerMethodField(read_only=True)
from_account = serializers.SerializerMethodField()
to_account = serializers.SerializerMethodField()
slug = serializers.SlugField(read_only=True)
class Meta:
model = Transaction
fields = '__all__'
def get_date(self, instance):
return instance.date.strftime("%B %d %Y")
def get_from_account(self, instance):
return instance.from_account.iban
def get_to_account(self, instance):
return instance.to_account.iban
解决方案是而不是使用以下 else 语句:
return Response(serializer.errors, status=403)
使用这个:
raise PermissionDenied(detail=None, code=status.HTTP_403_FORBIDDEN)
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