Django Rest框架更新字段 [英] Django Rest Framework update field

问题描述

我是DRF的新人，我正在尝试编写自定义视图/序列化程序，我可以使用它来更新用户对象的一个​​字段。

I am new to DRF and I am trying to write custom view / serializer that I can use to update just one field of user object.

我需要做逻辑只是更新用户的名称。

I need to make logic just to update the "name" of the user.

我写了serializer：

I wrote serializer:

class ClientNameSerializer(serializers.ModelSerializer):
    class Meta:
        model = ClientUser
        fields = ('name',)

    def update(self, instance, validated_data):
        instance.name = validated_data.get('name', instance.name)
        instance.save()
        return instance

此方法从不被调用。我尝试在那里设置断点并调试它，但它永远不会被调用，即使我使用PUT，POST或PATCH方法。如果我添加创建方法，则在使用POST时调用它。

This method is never called. I tried setting breakpoint there and debug it, but it is never called, even if I use PUT, POST or PATCH methods. If I add create method it is being called when I use POST.

这是我的视图如何：

class UpdateName(generics.CreateAPIView):
    queryset = ClientUser.objects.all()
    serializer_class = ClientNameSerializer
    permission_classes = (permissions.IsAuthenticated,)

<谢谢！

Does anyone have some suggestion? Thanks!

我的 models.py 看起来像这样

class ClientUser(models.Model):
    owner = models.OneToOneField(User,unique=True,primary_key=True)

    phone_number = models.CharField(validators=[PHONE_REGEX],max_length=20,unique=True)

    name = models.CharField(max_length=100,blank=True)
    status = models.IntegerField(default=1)
    member_from = models.DateTimeField('member from',auto_now_add=True)
    is_member = models.BooleanField(default=False)

推荐答案

端点可以接受的方法的定义是在视图中完成的，而不是序列化程序。

The definition of what methods the endpoint can accept are done in the view, not in the serializer.

您的序列化程序下的更新方法需要移动到您的视图中，以便您可以使用以下内容：

The update method you have under your serializer needs to be moved into your view so you'll have something like:

# serializers.py
class ClientNameSerializer(serializers.ModelSerializer):
    class Meta:
        model = ClientUser

# views.py
class UpdateName(generics.UpdateAPIView):
    queryset = ClientUser.objects.all()
    serializer_class = ClientNameSerializer
    permission_classes = (permissions.IsAuthenticated,)

    def update(self, request, *args, **kwargs):
        instance = self.get_object()
        instance.name = request.data.get("name")
        instance.save()

        serializer = self.get_serializer(instance)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)

        return Response(serializer.data)

<请注意，您将覆盖 UpdateModelMixin 和您可能需要更改上述代码才能正确。

Take note that you're overriding the UpdateModelMixin and you might need to change the above code a little bit to get it right.

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