如何在Django REST框架中的"PUT“更新请求中提供额外的数据？

from rest_framework import serializers

class MySerializer(serializers.Serializer):
    field1 = serializers.CharField()
    field2 = serializers.CharField()
    # 添加需要额外提供的字段

from rest_framework.views import APIView
from rest_framework.response import Response

class MyView(APIView):
    def put(self, request, *args, **kwargs):
        serializer = MySerializer(data=request.data)
        if serializer.is_valid():
            # 处理额外的数据
            field1_data = serializer.validated_data['field1']
            field2_data = serializer.validated_data['field2']
            # 更新逻辑
            # ...
            return Response({'message': '更新成功'})
        else:
            return Response(serializer.errors, status=400)