Python 没有这样的列：django\u content\u type.name

我在example.com网站上部署了django oscar的示例应用程序沙盒。我想把它移动到example.com:8000，并在example.com的url上运行另一个项目。我成功地完成了第二部分，当您进入example.com时，您可以看到较新的django项目正在启动和运行，但问题是，第一个django项目是django oscar的沙箱，它无法正常响应

输入example.com:8000时，将看到当前调试日志：

no such column: django_content_type.name
Request Method: GET
Request URL:    http://example.com:8000/fa/
Django Version: 1.7.8
Exception Type: OperationalError
Exception Value:    
no such column: django_content_type.name
Exception Location: /usr/local/lib/python2.7/dist-packages/django/db/backends/sqlite3/base.py in execute, line 485
Python Executable:  /usr/bin/python
Python Version: 2.7.3
Python Path:    
['/var/www/setak/setakenv/setakmain/django-oscar/sites/sandbox',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-linux2',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages/PIL',
 '/usr/lib/python2.7/dist-packages/gst-0.10',
 '/usr/lib/python2.7/dist-packages/gtk-2.0',
 '/usr/lib/python2.7/dist-packages/ubuntu-sso-client',
 '/usr/lib/python2.7/dist-packages/ubuntuone-client',
 '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel',
 '/usr/lib/python2.7/dist-packages/ubuntuone-couch',
 '/usr/lib/python2.7/dist-packages/ubuntuone-installer',
 '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol']

现在我在谷歌上搜索了这个错误，没有得到任何有价值的结果

还有，当我跑步的时候

sudo python manage.py migrate

发生以下情况，我也没有找到任何正确的解决方案：

Operations to perform:
  Synchronize unmigrated apps: reports_dashboard, treebeard, oscar, communications_dashboard, reviews_dashboard, debug_toolbar, widget_tweaks, offers_dashboard, catalogue_dashboard, sitemaps, compressor, django_extensions, dashboard, thumbnail, haystack, ranges_dashboard, checkout, gateway, django_tables2
  Apply all migrations: customer, promotions, shipping, wishlists, offer, admin, sessions, contenttypes, auth, payment, reviews, analytics, catalogue, flatpages, sites, address, basket, partner, order, voucher
Synchronizing apps without migrations:
  Creating tables...
  Installing custom SQL...
  Installing indexes...
Running migrations:
  No migrations to apply.
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/migrate.py", line 165, in handle
    emit_post_migrate_signal(created_models, self.verbosity, self.interactive, connection.alias)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/sql.py", line 268, in emit_post_migrate_signal
    using=db)
  File "/usr/local/lib/python2.7/dist-packages/django/dispatch/dispatcher.py", line 198, in send
    response = receiver(signal=self, sender=sender, **named)
  File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/management/__init__.py", line 83, in create_permissions
    ctype = ContentType.objects.db_manager(using).get_for_model(klass)
  File "/usr/local/lib/python2.7/dist-packages/django/contrib/contenttypes/models.py", line 58, in get_for_model
    " is migrated before trying to migrate apps individually."
RuntimeError: Error creating new content types. Please make sure contenttypes is migrated before trying to migrate apps individually.

---

我终于可以解决我的问题了。问题是，我使用django 1.8运行

manage.py migrate

，项目是在django 1.7.1下开发的，因此迁移导致了问题的解决

所以我所做的是，我再次安装了django 1.8.1，运行了

manage.py迁移contenttype0001

，然后卸载了django 1.8.1，安装了django 1.7.8并运行了

manage.py runserver

，一切都恢复正常，工作正常。

我也遇到了同样的问题。 在我的例子中，我使用Django 1.10创建本地数据库，但我需要使用旧的Django版本（1.7）进行一些测试，因此我删除了本地数据库，并使用Django 1.7运行

manage.py migrate

，然后错误就消失了

---

或者，当项目使用Django 1.10运行时，可以保留数据库而不是删除本地数据库，并在需要时将其移回项目中。是否尝试Django的建议并首先迁移contenttypes？@ger.s.brett是的。同样的错误也会发生！你是从django 1.8开始的，后来降级到django 1.7.8吗？@karthikr嗯，我想是的。故事是这样的，有一次我从1.7.x升级到1.8，当我看到它不工作时，我降级到1.7.8，最简单的事情就是重新创建数据库。也就是说，如果您没有太多数据，这个答案帮助我找到了一个解决方案，尽管我无法完全按照它来操作，因为我无法运行任何manage.py命令而不看到此错误（其他所有依赖的应用程序都尝试在初始化时访问contenttypes，即使没有定义数据库）。相反，我创建了一个单独的设置文件“initial.py”，它只在已安装的应用程序中定义了django应用程序。我可以先使用此设置模块运行迁移，然后切换到常规设置模块以完成所有特定于项目的迁移。对于与MySQL操作相关的错误，会引发此异常。例如：连接太多；无法解析主机名；握手不好；服务器正在关闭，通讯错误。

Traceback (most recent call last):
  File "/usr/lib/python2.7/wsgiref/handlers.py", line 85, in run
    self.result = application(self.environ, self.start_response)
  File "/usr/local/lib/python2.7/dist-packages/django/contrib/staticfiles/handlers.py", line 63, in __call__
    return self.application(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 170, in __call__
    self.load_middleware()
  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 50, in load_middleware
    mw_class = import_string(middleware_path)
  File "/usr/local/lib/python2.7/dist-packages/django/utils/module_loading.py", line 26, in import_string
    module = import_module(module_path)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
ImportError: No module named transaction