如何在Django中成功发布链接到Poll's API中的问题的选择？

# models.py
from django.db import models

class Poll(models.Model):
    question = models.CharField(max_length=200)

class Choice(models.Model):
    poll = models.ForeignKey(Poll, on_delete=models.CASCADE)
    choice_text = models.CharField(max_length=200)

# serializers.py
from rest_framework import serializers
from .models import Poll, Choice

class ChoiceSerializer(serializers.ModelSerializer):
    class Meta:
        model = Choice
        fields = ['id', 'choice_text']

class PollSerializer(serializers.ModelSerializer):
    choices = ChoiceSerializer(many=True, read_only=True)

    class Meta:
        model = Poll
        fields = ['id', 'question', 'choices']

# views.py
from rest_framework.generics import GenericAPIView
from .models import Poll
from .serializers import PollSerializer

class PollAPIView(GenericAPIView):
    serializer_class = PollSerializer

    def get(self, request, poll_id):
        poll = Poll.objects.get(id=poll_id)
        serializer = self.get_serializer(poll)
        return Response(serializer.data)

# urls.py
from django.urls import path
from .views import PollAPIView

urlpatterns = [
    path('polls/<int:poll_id>/', PollAPIView.as_view()),
]