python - 使用 Django Rest Framework 将操作字段添加到帖子中

Question

我需要使用 Django Rest Framework 将一些 JSON 添加到我的序列化模型中。它的目的只是向 api 传达我正在执行的操作。 json 需要是 action:"createproject"

下面是我的序列化器的示例。

from models import Project
from rest_framework import serializers

class ProjectSerializer(serializers.ModelSerializer):
    """
    Serializes the Project model to send and receive valid JSON data.
    """
    action = serializers.SOMETYPEOFFIELDIMGUESSING(data="createproject")


    class Meta:
      model = Project
      fields = ('action', 'title', 'id', 'endDate', 'startDate', 'product')

Answer 1

您需要添加SerializerMethodField()始终将值为 createproject 的 action 键添加到对象的序列化表示中。

来自 SerializerMethodField() 上的 DRF 文档:

This is a read-only field. It gets its value by calling a method on the serializer class it is attached to. It can be used to add any sort of data to the serialized representation of your object.

您的最终代码将类似于:

from models import Project
from rest_framework import serializers

class ProjectSerializer(serializers.ModelSerializer):
    """
    Serializes the Project model to send and receive valid JSON data.
    """
    # define a SerializerMethodField
    action = serializers.SerializerMethodField(method_name="get_data_for_action")    

    class Meta:
      model = Project
      fields = ('action', 'title', 'id', 'endDate', 'startDate', 'product')


    def get_data_for_action(self, obj):
        return "createproject" # always add this value in the 'action' key of serialized object representation