ImportError：在Ubuntu 11.04服务器上的django项目中没有名为mysql.base的模块

Question

我正在按照Django书籍中的步骤进行操作，到了作者讲解如何设置Django项目以使用数据库的部分。我选择了mysql。

我在settings.py中的设置是：

DATABASES = {
    'default': {
        'ENGINE': 'mysql',               # Add 'postgresql_psycopg2', 'mysql', 'sqlite3' or 'oracle'.
        'NAME': 'mydatabase',                  # Or path to database file if using sqlite3.
        'USER': 'myname',                # Not used with sqlite3.
        'PASSWORD': 'mypassword',        # Not used with sqlite3.
        'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
        'PORT': '',                      # Set to empty string for default. Not used with sqlite3.
    }
}

当我尝试启动服务器时，出现了以下信息：

Validating models...

Traceback (most recent call last):
  File "/home/me/workspace/mysite/src/mysite/manage.py", line 14, in <module>
    execute_manager(settings)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 442, in execute_manager
    utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 379, 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 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 67, in handle
    self.run(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 78, in run
    self.inner_run(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 88, in inner_run
    self.validate(display_num_errors=True)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 243, in validate
    from django.core.management.validation import get_validation_errors
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/validation.py", line 3, in <module>
    from django.contrib.contenttypes.generic import GenericForeignKey, GenericRelation
  File "/usr/local/lib/python2.7/dist-packages/django/contrib/contenttypes/generic.py", line 7, in <module>
    from django.db import connection
  File "/usr/local/lib/python2.7/dist-packages/django/db/__init__.py", line 27, in <module>
    connection = connections[DEFAULT_DB_ALIAS]
  File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 81, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 23, in load_backend
    return import_module('.base', backend_name)
  File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
ImportError: No module named mysql.base

我在网上查了一下，发现这个信息可能是因为你使用了旧版本的MySQLd。所以我确保自己安装了最新版本。然后在一个交互式的Python环境中测试了导入，结果没问题。

还有其他建议吗？为什么这不工作呢？

我是在新安装的Ubuntu 11.04版本上工作（通过Wubi在Windows 7中），如果这有影响的话。=)

Answer 1

正确的数据库设置是 'django.db.backends.mysql'。