在Django REST框架中以双向方式获取一对多关系数据

from django.db import models

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

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

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')

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

class ParentView(APIView):
    def get(self, request):
        parents = Parent.objects.all()
        serializer = ParentSerializer(parents, many=True)
        return Response(serializer.data)