具有预填充模型的DRF一对一关系序列化程序

# models.py
from django.db import models

class User(models.Model):
    username = models.CharField(max_length=100)
    email = models.EmailField()

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    bio = models.TextField()
    location = models.CharField(max_length=100)

# serializers.py
from rest_framework import serializers
from .models import User, Profile

class ProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = Profile
        fields = ['bio', 'location']

class UserSerializer(serializers.ModelSerializer):
    profile = ProfileSerializer()

    class Meta:
        model = User
        fields = ['username', 'email', 'profile']

    def create(self, validated_data):
        profile_data = validated_data.pop('profile')
        user = User.objects.create(**validated_data)
        Profile.objects.create(user=user, **profile_data)
        return user

    def update(self, instance, validated_data):
        profile_data = validated_data.pop('profile')
        instance.username = validated_data.get('username', instance.username)
        instance.email = validated_data.get('email', instance.email)
        instance.save()

        profile = instance.profile
        profile.bio = profile_data.get('bio', profile.bio)
        profile.location = profile_data.get('location', profile.location)
        profile.save()

        return instance