Django和venv：settings.DATABASES配置不正確。 請提供引擎值

Question

當我運行python manage.py syncdb時會發生這種情況。 當我運行python manage.py syncdb --mysite.settings時，也會發生這種情況。 不知道從何處去：django無法識別我的設置文件，我也不知道為什么或如何糾正它。

python ../manage.py syncdb
Traceback (most recent call last):
  File "../manage.py", line 9, in <module>
    execute_from_command_line(sys.argv)
  File "/home/ryan/Programming/OpenCV-2.4.2/msheroku/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
    utility.execute()
  File "/home/ryan/Programming/OpenCV-2.4.2/msheroku/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/ryan/Programming/OpenCV-2.4.2/msheroku/venv/local/lib/python2.7/site-packages/django/core/management/base.py", line 196, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/ryan/Programming/OpenCV-2.4.2/msheroku/venv/local/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/home/ryan/Programming/OpenCV-2.4.2/msheroku/venv/local/lib/python2.7/site-packages/django/core/management/base.py", line 371, in handle
    return self.handle_noargs(**options)
  File "/home/ryan/Programming/OpenCV-2.4.2/msheroku/venv/local/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 57, in handle_noargs
    cursor = connection.cursor()
  File "/home/ryan/Programming/OpenCV-2.4.2/msheroku/venv/local/lib/python2.7/site-packages/django/db/backends/dummy/base.py", line 15, in complain
    raise ImproperlyConfigured("settings.DATABASES is improperly configured. "
django.core.exceptions.ImproperlyConfigured: settings.DATABASES is improperly configured. Please supply the ENGINE value. Check settings documentation for more details.

從settings.py

DATABASES = { 
    'default': {
        'ENGINE': 'postgresql_psycopg2', # Add 'postgresql_psycopg2', 'mysql', 'sqlite3' or 'oracle'.
        'NAME': 'xxx',                      # Or path to database file if using sqlite3.
        'USER': 'xxx',                      # Not used with sqlite3.
        'PASSWORD': 'xxx',                  # 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.
    }   
}

我非常有信心，它沒有找到正確的設置文件。

Answer 1

嗨，我假設您正在使用heroku測試您的應用程序，並且嘗試連接到本地數據庫？ 如果是這樣，請確保刪除以下代碼行：

# Parse database configuration from $DATABASE_URL
  import dj_database_url
  DATABASES['default'] =  dj_database_url.config()

# Honor the 'X-Forwarded-Proto' header for request.is_secure()
  SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

當您要連接到其他服務器上的數據庫時，將其添加。

Answer 2

一個正確的人看起來像這樣。

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

編輯：將主機更改為localhost以反映注釋和manage.py

根據您如何運行syncdb

python manage.py syncdb --mysite.settings

確保您的manage.py文件具有指定的正確DJANGO_SETTINGS_MODULE

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")

然后，您應該能夠在沒有--mysite.settings的情況下運行syncdb。

python manage.py syncdb