我是否在Django中以错误的方式覆盖了模型上的save方法？ [英] Am I overriding the save method on the model in a wrong way in django?

问题描述

我有一个个人资料模型，可以像这样扩展用户模型，

I have a Profile model that extends the user model like so,

class Profile(User):
    user = models.OneToOneField(User, parent_link=True, on_delete=models.CASCADE)
    slug = models.SlugField(unique=True, blank=True)
    def save(self, *args, **kwargs):
        print('self.username')
        print(self.username)
        self.slug = self.username
        super(Profile, self).save(*args, **kwargs)

我是尝试为我的模型创建一个Slug字段，因此我覆盖了save方法以将Slug用作用户名。关键是，当我使用命令 createsuperuser 创建一个新用户并打印出用户名时（如您在代码中看到的那样），它不会显示任何内容-它不会t显示提供的用户名。这可能是我出现此问题的原因吗？如果是这样，我该如何解决？

I am trying to create a slug field for my model , so I override the save method to include the slug as the username. The thing is, when I create a new user with the command createsuperuser and print out the username as you can see in the code, it doesn't show anything - it doesn't show the provided username. Could this be the reason why I am having this problem ? And if so, how can I fix it?

推荐答案

如果您确定不想拥有用户的个人资料数据在具有 OneToOneField 的单独模型中返回到Django的默认 User ，那么您可能应该将 AbstractUser 而非文档中指定的 User 。

If you're sure you don't want to have your user's profile data in a separate model with a OneToOneField back to Django's default User, then you should probably subclass AbstractUser and not User, as specified in the docs.

https://docs.djangoproject.com/ zh_cn / 2.2 / topics / auth / customizing /＃substituing-a-custom-user-model

请考虑以下部分：

如果您对Django的User模型完全满意，并且只想添加一些其他配置文件信息，则可以简单地将django.contrib.auth.models.AbstractUser子类化。添加您的自定义配置文件字段[...]

If you’re entirely happy with Django’s User model and you just want to add some additional profile information, you could simply subclass django.contrib.auth.models.AbstractUser and add your custom profile field [...]

（来自 https://docs.djangoproject.com/en/2.2/topics/auth/customizing/#extending-django-s-default-user ）

然后您将像这样：

from django.contrib.auth.models import AbstractUser
from django.contrib.auth.models import UserManager
from django.utils.text import slugify
from django.db import models


class User(AbstractUser):
    slug = models.SlugField(unique=True, blank=True)

    objects = UserManager()

    def save(self, *args, **kwargs):
        print('self.username')
        print(self.username)
        self.slug = slugify(self.username)
        super().save(*args, **kwargs)

然后，定义 settings.AUTH_USER_MODEL ，

AUTH_USER_MODEL = "myapp.User"  # also, add 'myapp' to INSTALLED_APPS

记住：哟您将需要像这样引用您的User模型（无论您是否自定义该模型，这都是您应该采取的方式）：

Remember: you'll need to reference your User model like this (and this is how you should do it anyway, whether you customized that model or not):

from django.contrib.auth import get_user_model

User = get_user_model()

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