如何在django rest框架序列化程序中访问初始数据

from rest_framework import serializers

class MySerializer(serializers.Serializer):
    id = serializers.IntegerField()
    name = serializers.CharField()
    # 其他字段...

class MySerializer(serializers.Serializer):
    id = serializers.IntegerField()
    name = serializers.CharField()
    # 其他字段...

    def to_representation(self, instance):
        # 访问初始数据
        initial_data = self.context['request'].data

        # 处理初始数据
        # ...

        # 调用父类的to_representation方法获取序列化后的数据
        data = super().to_representation(instance)

        return data

serializer = MySerializer(instance, context={'request': request})