在django中注册或登录后保存匿名用户数据并与用户映射

from django.db import models
from django.contrib.auth.models import User

class AnonymousUser(models.Model):
    # 匿名用户模型，保存匿名用户数据
    # 与用户模型建立一对一的关联关系
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    data = models.CharField(max_length=100)

def register_or_login(request):
    if request.method == 'POST':
        username = request.POST['username']
        password = request.POST['password']
        data = request.POST['data']
        
        try:
            # 检查用户是否已存在
            user = User.objects.get(username=username)
        except User.DoesNotExist:
            # 用户不存在，创建新用户
            user = User.objects.create_user(username=username, password=password)
            user.save()
            
            # 创建匿名用户对象并保存数据
            anonymous_user = AnonymousUser(user=user, data=data)
            anonymous_user.save()
        else:
            # 用户已存在，关联匿名用户数据
            try:
                anonymous_user = AnonymousUser.objects.get(user=user)
            except AnonymousUser.DoesNotExist:
                anonymous_user = AnonymousUser(user=user, data=data)
                anonymous_user.save()
            else:
                anonymous_user.data = data
                anonymous_user.save()
        
        # 用户登录代码...
        
    # 其他代码...