Django - 属性错误

Posted 2023-02-15

【中文标题】Django - 属性错误

【英文标题】：Django - AttributeError

【发布时间】：2018-05-01 17:23:25

【问题描述】：

我创建了我的自定义用户模型。在进行迁移时，我得到了一个 AtrributeError

from django.db import models
from time import timezone
from django.contrib.auth.models import AbstractBaseUser, BaseUserManager
from django.core.mail import send_mail
from django.utils.http import urlquote
from django.utils.translation import ugettext_lazy as _


class CustomUsermanager(BaseUserManager):
    def _create_user(self, is_anonymous, first_name, last_name, email, username, password, home_address, user_type, image_path):
        now = timezone.now()

        if not email:
            raise ValueError('The gives emial must be set')

        email = self.normalize_email(email)
        user = self.model(
            is_anonymous=is_anonymous,
            first_name=first_name,
            last_name=last_name,
            email=email,
            username=username,
            home_address=home_address,
            user_type=user_type,
            image_path=image_path,
            created_time=now,
            last_login=now
        )

        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_a_admin(self, first_name, last_name, email, username, password, home_address, image_path):
        return self._create_user(1, first_name, last_name, email, username, password, home_address, 0, image_path)

    def create_a_nonanonymous_patient(self, first_name, last_name, email, username, password, home_address, image_path):
        return self._create_user(0, first_name, last_name, email, username, 1, password, home_address, 1, image_path)

    def create_an_anonymous_patient(self, first_name, last_name, email, username, password, home_address, image_path):
        return self._create_user(1, first_name, last_name, email, username, 1, password, home_address, 1, image_path)

    def create_a_nonanonymous_helper(self, first_name, last_name, email, username, password, home_address, image_path):
        return self._create_user(0, first_name, last_name, email, username, 2, password, home_address, 2, image_path)

    def create_an_anonymous_helper(self, first_name, last_name, email, username, password, home_address, image_path):
        return self._create_user(1, first_name, last_name, email, username, 2, password, home_address, 2, image_path)

    def create_a_prof(self, first_name, last_name, email, username, password, home_address, image_path):
        return self._create_user(0, first_name, last_name, email, username, 3, password, home_address, 3, image_path)


class CustomUser(AbstractBaseUser):
    is_anonymous = models.BooleanField()
    username = models.CharField(max_length=255, unique=True)
    first_name = models.CharField(max_length=255, blank=True)
    last_name = models.CharField(max_length=255, blank=True)
    email = models.EmailField(blank=True, unique=True)
    home_address = models.CharField(max_length=255, blank=True)
    user_type = models.IntegerField(1)
    image_path = models.CharField(max_length=500, blank=True)
    created_time = models.TimeField()

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['username', 'home_address', 'first_name', 'last_name', 'user_type']

    objects = CustomUsermanager()

    class Meta:
        verbose_name = _('user')
        verbose_name_plural = _('users')

    def get_absolute_url(self):
        return '/users/%s/' % urlquote(self.email)

    def get_full_name(self):
        full_name = '%s %s' % (self.first_name, self.last_name)
        return full_name.strip()

    def get_short_name(self):
        return self.first_name

    def get_email_user(self, subject, message, from_email=None):
        send_mail(subject, message, from_email, [self.email])

例外是：

Traceback（最近一次调用最后一次）：

文件“manage.py”，第 22 行，在 execute_from_command_line(sys.argv) 中

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management__init__.py”，第 363 行，在 execute_from_command_line 实用程序.execute()

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management__init__.py”，第 355 行，在执行中 self.fetch_command(subcommand).run_from_argv(self.argv)

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management\base.py”，第 283 行，在 run_from_arg v self.execute(*args, **cmd_options)

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management\base.py”，第 327 行，在执行中 self.check()

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management\base.py”，第 359 行，检查 include_deployment_checks=include_deployment_checks，

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management\base.py”，第 346 行，在 _run_checks 返回 checks.run_checks(**kwargs)

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\checks\registry.py”，第 81 行，在 run_checks new_errors = 检查（app_configs=app_configs）

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\contrib\auth\checks.py”，第 77 行，在 check_user_mod 埃尔 if isinstance(cls().is_anonymous, MethodType):

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\contrib\auth\base_user.py”，第 68 行，在 init super(AbstractBaseUser, self).init(*args, **kwargs)

文件“C:\Users\Nutzer\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\db\models\base.py”，第 557 行，在 init _setattr(self, field.attname, val)

AttributeError: 无法设置属性

谁能指出哪里错了？

【问题讨论】：

您正在运行什么迁移？ minimal reproducible example

@HåkenLid 我不明白你的意思。我只是做“python manage.py makemigrations”

我很困惑为什么你有一个名为is_anonymous 的模型字段。这可能是导致此问题的原因，因为这应该是AbstractBaseUser 中的只读属性，始终返回False。尝试删除该字段并运行 makemigrations。

我可以确认@HåkenLid 的发现。要查看 AbstractBaseUser 类的属性和方法，请参见此处：github.com/django/django/blob/master/django/contrib/auth/…

@noahandthewhale，谢谢！这真是巧合！

【参考方案1】：

user = self.models(
        is_anonymous=is_anonymous,
        first_name=first_name,
        last_name=last_name,
        email=email,
        username=username,
        home_address=home_address,
        user_type=user_type,
        image_path=image_path,
        created_time=now,
        last_login=now
    )

替换模型