python之AbstractUser 模型的 django 1.8.5 迁移失败_编程设计

将我的项目从 django 1.7.4 迁移到 1.8.5 时遇到了一个奇怪的问题

在我的项目中，我像这样扩展基本的用户模型:

应用用户:

class User(AbstractUser): 
    age = models.IntegerField() 
 
    def __unicode__(self): 
        return self.username

现在由于某些原因在 django 1.8.5 中迁移时我必须开始做

python manage.py makemigrations

这将为用户应用程序进行迁移。

如果我这样做

 python manage.py migrate

在此之后它直接失败并出现此错误

django.db.utils.ProgrammingError: relation "users_user" does not exist

然后我做:

python manage.py migrate users

哪个失败了

"Error creating new content types. Please make sure contenttypes " 
RuntimeError: Error creating new content types. Please make sure  
contenttypes is migrated before trying to migrate apps individually.

有趣的是，即使这个失败了，现在也在运行

python manage.py migrate

作品

Operations to perform: 
  Synchronize unmigrated apps: messages, staticfiles, django_extensions, allauth, avatar, crispy_forms, debug_toolbar 
  Apply all migrations: sessions, users, contenttypes, admin, sites, account, auth, socialaccount 
Synchronizing apps without migrations: 
  Creating tables... 
    Creating table avatar_avatar 
    Running deferred SQL... 
  Installing custom SQL... 
Running migrations: 
  Rendering model states... DONE 
  Applying account.0001_initial... OK 
  Applying account.0002_email_max_length... OK 
  Applying admin.0001_initial... OK 
  Applying contenttypes.0002_remove_content_type_name... OK 
  Applying auth.0002_alter_permission_name_max_length... OK 
  Applying auth.0003_alter_user_email_max_length... OK 
  Applying auth.0004_alter_user_username_opts... OK 
  Applying auth.0005_alter_user_last_login_null... OK 
  Applying auth.0006_require_contenttypes_0002... OK 
  Applying sessions.0001_initial... OK 
  Applying sites.0001_initial... OK 
  Applying sites.0002_set_site_domain_and_name... OK 
  Applying sites.0003_auto_20151104_1309... OK 
  Applying socialaccount.0001_initial... OK

从旧的 django 版本迁移到 1.8 时，有人遇到过同样的问题吗？

请您参考如下方法:

contenttypes is migrated before trying to migrate apps individually.

您需要做的就是添加依赖项，以便您的迁移按顺序运行。

查看 django.contrib.contenttypes.migrations，将最新的作为依赖项添加到 account.migrations 中，它应该一切正常。