如何在DRF中从表单中为整数字段发送null

from rest_framework import serializers

class MySerializer(serializers.Serializer):
    my_field = serializers.IntegerField(allow_null=True)

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

class MyView(APIView):
    def post(self, request):
        serializer = MySerializer(data=request.data)
        if serializer.is_valid():
            # 处理有效的数据
            my_field_value = serializer.validated_data.get('my_field')
            # ...
            return Response({'success': True})
        else:
            # 处理无效的数据
            errors = serializer.errors
            # ...
            return Response({'success': False, 'errors': errors})