django - 创建新内容类型时出错。在尝试单独迁移应用程序之前，请确保已迁移内容类型

Question

我正在尝试从 Django 1.6 迁移到 Django 1.8。我在 Django 1.6 中使用 South 来管理 migrations。我已经通过 python manage.py makemigrations 成功创建了新的迁移文件。在运行 python manage.py migrate --fake-initial 时，出现此错误

 Traceback (most recent call last):
  File "manage.py", line 39, in <module>
    execute_from_command_line(sys.argv)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-    packages/django/core/management/__init__.py", line 338, in   execute_from_command_line
    utility.execute()
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-  packages/django/core/management/__init__.py", line 330, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/base.py", line 390, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/base.py", line 441, in execute
    output = self.handle(*args, **options)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 225, in handle
    emit_post_migrate_signal(created_models, self.verbosity, self.interactive, connection.alias)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/core/management/sql.py", line 280, in emit_post_migrate_signal
using=db)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 201, in send
response = receiver(signal=self, sender=sender, **named)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/contrib/auth/management/__init__.py", line 82, in create_permissions
    ctype = ContentType.objects.db_manager(using).get_for_model(klass)
  File "/home/jonty/.virtualenvs/squadrun/local/lib/python2.7/site-packages/django/contrib/contenttypes/models.py", line 78, in get_for_model
    "Error creating new content types. Please make sure contenttypes "

其中一个迁移文件 0001_initial.py 说:

dependencies = [
    ('auth', '0006_require_contenttypes_0002'),
    ('clients', '0002_auto_20150428_1551'),
    ('players', '0001_initial'),
]

我想这尤其是问题所在。这个问题的解决方法是什么。任何帮助将不胜感激。

Answer 1

根据 this，我认为这与“删除 ContentType.name”有关.但不知何故它不起作用。

通过从“django_content_type”表中手动删除列 name。例如。

'ALTER TABLE django_content_type DROP COLUMN name'

我能够应用迁移。也许这至少能让你更进一步。