Django REST如何在表单中呈现选定的字段

from rest_framework import serializers

class MyModelSerializer(serializers.ModelSerializer):
    selected_field = serializers.CharField()

    class Meta:
        model = MyModel
        fields = ('selected_field', 'other_field1', 'other_field2')

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

class MyView(APIView):
    def post(self, request):
        serializer = MyModelSerializer(data=request.data)
        if serializer.is_valid():
            # 处理有效的表单数据
            selected_field_value = serializer.validated_data['selected_field']
            # 其他字段的处理
            # ...

            return Response({'success': True})
        else:
            return Response(serializer.errors)