如何在Django Rest框架中检索外部字段名

from rest_framework import serializers

class MySerializer(serializers.Serializer):
    # 定义需要序列化的字段
    field1 = serializers.CharField()
    field2 = serializers.CharField()

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

class MyView(APIView):
    def get(self, request):
        # 创建一个Serializer实例
        serializer = MySerializer()
        
        # 检索外部字段名
        field_names = serializer.get_fields().keys()
        
        return Response(field_names)