Question

将项目从django 1.7.4迁移到1.8.5时，我遇到了一个奇怪的问题

在我的项目中，我扩展了基本的用户模型，如下所示：

App用户：

class User(AbstractUser):
    age = models.IntegerField()

    def __unicode__(self):
        return self.username

现在因为某些原因在django 1.8.5中迁移时，我必须从

开始

python manage.py makemigrations

这将为用户app进行迁移。

如果我这样做

 python manage.py migrate

直接在此之后

失败并出现此错误

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

然后我这样做：

python manage.py migrate users

哪个失败

"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，即使失败了，现在正在运行

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

从较旧的django版本迁移到1.8时，是否有人遇到过同样的问题？

Answer 1

在尝试单独迁移应用之前，会先迁移
contenttypes。

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，在account.migrations中添加最新的一个作为依赖项，它应该都可以正常工作。

对于AbstractUser模型，django 1.8.5迁移失败

1 个答案: