定制用户在Django引发ValueError异常

甚至这个简单示例引发一个ValueError: Dependency on app with no migrations: myApp期间python manage.py syncdb定制用户在Django引发ValueError异常

对myApp/models.py

from django.contrib.auth.models import AbstractUser 

class User(AbstractUser): 
    pass

settings.py

AUTH_USER_MODEL = 'myApp.User'

个运行在Django == ./manage syncdb 1.6.5 < <工作

Creating tables ...

在Django ==运行./manage syncdb 1.7 < <休息

Traceback (most recent call last): 
    File "manage.py", line 10, in <module> 
    execute_from_command_line(sys.argv) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line 
    utility.execute() 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute 
    self.fetch_command(subcommand).run_from_argv(self.argv) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv 
    self.execute(*args, **options.__dict__) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute 
    output = self.handle(*args, **options) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/base.py", line 533, in handle 
    return self.handle_noargs(**options) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 27, in handle_noargs 
    call_command("migrate", **options) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/__init__.py", line 115, in call_command 
    return klass.execute(*args, **defaults) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute 
    output = self.handle(*args, **options) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 63, in handle 
    executor = MigrationExecutor(connection, self.migration_progress_callback) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/db/migrations/executor.py", line 17, in __init__ 
    self.loader = MigrationLoader(self.connection) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/db/migrations/loader.py", line 48, in __init__ 
    self.build_graph() 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/db/migrations/loader.py", line 239, in build_graph 
    parent = self.check_key(parent, key[0]) 
    File "/Users/bdhammel/Documents/web_development/tutorials/python_social_auth/env/lib/python2.7/site-packages/django/db/migrations/loader.py", line 163, in check_key 
    raise ValueError("Dependency on app with no migrations: %s" % key[0]) 
ValueError: Dependency on app with no migrations: myApp

我一直没能找到任何在1.7的文档中说这应该与1.6完全不同。它确实看起来像其他人已经有this problem too，但由于运行./manage.py migrate --list

有没有人遇到过这个？

来源

2014-10-05 Ben

如果你只是想创建一个新的数据库，你不关心数据迁移，你也可以删除'myApp/migration'目录。在我的例子中，'migrate'只有在它之后才开始工作。 – deathangel908 2015-03-13 19:37:59

我想我是找错了地方的答案：

我解决了这个运行：./manage.py makemigrations myApp

(env)Bens-MacBook-Pro:social_auth bdhammel$ ./manage.py makemigrations myApp 
Migrations for 'myApp': 
    0001_initial.py: 
    - Create model User 
(env)Bens-MacBook-Pro:social_auth bdhammel$ python manage.py syncdb 
Operations to perform: 
    Apply all migrations: sessions, admin, myApp, auth, default, contenttypes 
Running migrations: 
    Applying contenttypes.0001_initial... FAKED 
    Applying auth.0001_initial... FAKED 
    Applying app.0001_initial... FAKED 
    Applying admin.0001_initial... FAKED 
    Applying default.0001_initial... FAKED 
    Applying sessions.0001_initial... FAKED 

You have installed Django's auth system, and don't have any superusers defined. 
Would you like to create one now? (yes/no): yes

通过https://docs.djangoproject.com/en/1.7/topics/migrations/#s-custom-fields

编辑
我应该用python manage.py migrate而不是python manage.py syncdb。

https://docs.djangoproject.com/en/1.8/releases/1.7/#schema-migrations