得到一个Django.db.utils。操作错误：没有具有自定义用户Mod的此类表

Question

嗯，我在一个名为accounts的应用程序中有一个自定义用户模型。accounts.User如下所示：

from django.contrib.auth.models import AbstractBaseUser
from django.core.validators import RegexValidator
from django.db import models
from django.db.models.signals import post_save
from django.dispatch import receiver

from accounts.managers import UserManager
from base.models import Model
from accounts.models.profiles import Profile


class User(Model, AbstractBaseUser):
    objects = UserManager()

    phone_regex = RegexValidator(
        regex=r'^\+?1?\d{9,15}$',
        message="Phone number must be entered in the format: '+999999999'. 9-15 digits allowed.",
    )
    phone = models.CharField(
        validators=[phone_regex],
        max_length=17,
        blank=True
    )
    email = models.EmailField(
        max_length=255,
        unique=True,
    )
    active = models.BooleanField(
        default=True
    )
    staff = models.BooleanField(
        default=False
    )
    superuser = models.BooleanField(
        default=False
    )

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

    def __str__(self):
        return self.email

    def has_perm(self, perm, obj=None):
        return True

    def has_module_perms(self, app_label):
        return True

    @property
    def is_active(self):
        return self.active

    @property
    def is_staff(self):
        return self.staff

    @property
    def is_superuser(self):
        return self.superuser

    def serialize(self):
        data = {
            'id': self.id,
            'email': self.email,
        }
        return data


@receiver(post_save, sender=User)
def create_profile(sender, instance, created, **kwargs):
    if created:
        Profile.objects.create(user=instance)


@receiver(post_save, sender=User)
def save_profile(sender, instance, **kwargs):
    instance.profile.save()

并且UserManager如下所示：

^{pr2}$

我的帐户应用程序注册如下：

...

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'base',
    'accounts',
]

AUTH_USER_MODEL = 'accounts.User'

...

我运行python manage.py makemigrations和python manage.py migrate，一切都如预期的顺利运行。问题发生在我开始python manage.py createsuperuser时。它会提示按预期提供电子邮件输入，但当键入电子邮件并单击enter时，它将返回一个错误。在

回溯（最近一次呼叫）：

File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
        return self.cursor.execute(sql, params)
      File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 303, in execute
        return Database.Cursor.execute(self, query, params)
    sqlite3.OperationalError: no such table: accounts_user

上述异常是以下异常的直接原因：

回溯（最近一次呼叫）：

File "manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/core/management/__init__.py", line 365, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 59, in execute
    return super().execute(*args, **options)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/core/management/base.py", line 335, in execute
    output = self.handle(*args, **options)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 117, in handle
    self.UserModel._default_manager.db_manager(database).get_by_natural_key(username)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 44, in get_by_natural_key
    return self.get(**{self.model.USERNAME_FIELD: username})
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/models/query.py", line 397, in get
    num = len(clone)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/models/query.py", line 254, in __len__
    self._fetch_all()
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/models/query.py", line 1179, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/models/query.py", line 54, in __iter__
    results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/models/sql/compiler.py", line 1064, in execute_sql
    cursor.execute(sql, params)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/utils.py", line 100, in execute
    return super().execute(sql, params)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/utils.py", line 68, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/Users/zulwiyozaputra/Developer/Environments/poros/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 303, in execute
    return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: accounts_user

我试图通过删除数据库并进行迁移来重现错误，但我发现应用程序中没有按预期创建迁移文件，因为它应该在数据库中创建自定义用户的迁移文件。以前有人犯过这个错误吗？你是怎么解决的？

Answer 1

通过在我的应用程序中手动重新创建migrations/文件夹解决了这个问题。当我删除数据库和迁移文件时，该文件夹被删除。文件夹不会用python manage.py makemigrations和python manage.py migrate自动重新创建。在

Answer 2

从AbstractBaseUser创建自定义用户模型时，不需要将模型类添加为父类，只需保留AbstractBaseUser：

class User(AbstractBaseUser)

在这个清除迁移文件之后，重新运行makemigrations和{}。在