django-rest-framework - 尝试在序列化程序 `opponent` 上获取字段 `DialogSerializer` 的值时出现 AttributeError

Question

在serializer.py中使用create方法后出现错误

这是我的错误:

Got AttributeError when attempting to get a value for field opponent on serializer DialogSerializer. The serializer field might be named incorrectly and not match any attribute or key on the tuple instance. Original exception text was: 'tuple' object has no attribute 'opponent'.

这是我的serializer.py

class DialogSerializer(serializers.ModelSerializer):
    """A serializer for profile feed items."""
    def create(self, validated_data):
        dialog=Dialog.objects.get_or_create(**validated_data)
        return dialog
    class Meta:
        model = Dialog
        fields = ('id', 'owner','opponent')
        extra_kwargs = {'owner': {'read_only': True}}



class DialogueViewSet(viewsets.ModelViewSet):

serializer_class = DialogSerializer
permission_classes = (IsAuthenticated,)

def get_queryset(self):


    user=self.request.user

    return Dialog.objects.filter(owner=user)

def perform_create(self, serializer):
    """Sets the user profile to the logged in user."""

    serializer.save(owner=self.request.user)
# def create(self,**kwargs):

Answer 1

主要问题是 get_or_create 像 (object, created) 一样返回元组。所以下面的事情应该可以解决你的问题。

 def create(self, validated_data):
        dialog, created =Dialog.objects.get_or_create(**validated_data)
        return dialog