settings.DATABASES 配置不正确。请提供 NAME 值

settings.DATABASES is improperly configured. Please supply the NAME value

我知道以前有人问过类似的问题。但这全都与发动机价值有关。有谁知道如何使用 NAME 值解决此错误？我部署到 heroku，一切正常。然而，在本地，它给了我这个错误 这是回溯：

Traceback:
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/qiaoweiliu/Google Drive/heroku/luxingnan/views.py" in home
  17.         return render(request,'luxingnan/home.html',{'auth_form':auth_form, 'user_form':user_form,'cars':cars,'next_url': '/',})
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/shortcuts.py" in render
  67.             template_name, context, request=request, using=using)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/loader.py" in render_to_string
  99.         return template.render(context, request)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/backends/django.py" in render
  74.         return self.template.render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/base.py" in render
  209.                     return self._render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/base.py" in _render
  201.         return self.nodelist.render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/base.py" in render
  903.                 bit = self.render_node(node, context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/debug.py" in render_node
  79.             return node.render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  135.         return compiled_parent._render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/base.py" in _render
  201.         return self.nodelist.render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/base.py" in render
  903.                 bit = self.render_node(node, context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/debug.py" in render_node
  79.             return node.render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  65.                 result = block.nodelist.render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/base.py" in render
  903.                 bit = self.render_node(node, context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/debug.py" in render_node
  79.             return node.render(context)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/template/defaulttags.py" in render
  328.             if match:
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/models/query.py" in __nonzero__
  170.         return type(self).__bool__(self)
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/models/query.py" in __bool__
  166.         self._fetch_all()
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/models/query.py" in _fetch_all
  965.             self._result_cache = list(self.iterator())
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/models/query.py" in iterator
  238.         results = compiler.execute_sql()
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  827.         cursor = self.connection.cursor()
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/backends/base/base.py" in cursor
  162.             cursor = self.make_debug_cursor(self._cursor())
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/backends/base/base.py" in _cursor
  135.         self.ensure_connection()
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/backends/base/base.py" in ensure_connection
  130.                 self.connect()
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/backends/base/base.py" in connect
  118.         conn_params = self.get_connection_params()
File "/Users/qiaoweiliu/.virtualenvs/heroku/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py" in get_connection_params
  154.                 "settings.DATABASES is improperly configured. "

Exception Type: ImproperlyConfigured at /
Exception Value: settings.DATABASES is improperly configured. Please supply the NAME value.

这是我的 setting.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}

DATABASES['default'] =  dj_database_url.config()

DATABASES['default']['ENGINE'] = 'django_postgrespool'

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}

够了。如果你想使用django_postgrespool，你可以在上面编辑它。

但是你的以下几行：

DATABASES['default'] =  dj_database_url.config()
DATABASES['default']['ENGINE'] = 'django_postgrespool'

只是覆盖上面的标准 DATABASE 设置。所以你需要删除这两行（或者通过 dj_database_url 定义它并删除上面的代码片段）。

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}

import dj_database_url

db_config = dj_database_url.config()
if db_config:
    DATABASES['default'] =  db_config

在我的例子中，我将整个数据库 url 和密码存储在一个环境变量中。我已将密码设置为包含 @，这会扰乱其余字符串的解析，因此不会检测到名称参数。刚刚将密码更改为不包含任何 @ 符号。