如何使用Django Rest框架将多个模型序列化为一个用于层次结构的序列化程序？

# models.py
from django.db import models

class Parent(models.Model):
    name = models.CharField(max_length=100)

class Child(models.Model):
    parent = models.ForeignKey(Parent, on_delete=models.CASCADE)
    name = models.CharField(max_length=100)

# serializers.py
from rest_framework import serializers

class ChildSerializer(serializers.ModelSerializer):
    class Meta:
        model = Child
        fields = ('name',)

class ParentSerializer(serializers.ModelSerializer):
    children = ChildSerializer(many=True)

    class Meta:
        model = Parent
        fields = ('name', 'children')

# views.py
from rest_framework.response import Response
from rest_framework.decorators import api_view
from .serializers import ParentSerializer

@api_view(['GET'])
def parent_detail(request):
    parents = Parent.objects.all()
    serializer = ParentSerializer(parents, many=True)
    return Response(serializer.data)

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

urlpatterns = [
    path('parents/', parent_detail),
]