django中的自定義用戶引發了ValueError

Question

即使這個簡單的例子也會拋出一個ValueError: Dependency on app with no migrations: myApp python manage.py syncdb期間的ValueError: Dependency on app with no migrations: myApp

對myApp / models.py

from django.contrib.auth.models import AbstractUser

class User(AbstractUser):
    pass

settings.py

AUTH_USER_MODEL = 'myApp.User'

---

在django中運行./manage syncdb == 1.6.5 <<有效

Creating tables ...

在django中運行./manage syncdb == 1.7 <<中斷

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

我還沒有在1.7的文檔中找到任何說明這應該以1.6的方式完成的任何內容。 它確實看起來像其他人也有這個問題 ，但是因為運行./manage.py migrate --list

有沒有遇到過這個？

Answer 1

我想我在錯誤的地方尋找答案：

我通過運行： ./manage.py makemigrations myApp解決了這個問題

(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

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

編輯
我應該使用python manage.py migrate而不是python manage.py syncdb 。

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

syncdb已被棄用，並由migrate替換。 別擔心 - 對syncdb的調用仍然可以像以前一樣工作。

Answer 2

1. 刪除每個應用中的遷移文件夾
2. 刪除表django_migrations
3. 運行python3 manage.py makemigrations app1
4. 運行python3 manage.py makemigrations app2

---

manage.py runserver現在應該像魅力一樣工作

Answer 3

當我將應用程序移動到一個干凈的新項目而不刪除遷移時，這種情況發生在我身上。 如果您不關心遷移並從頭開始創建項目，請考慮從這些應用程序中刪除遷移。