django mongodb -settings.databases配置不当

Question

我在项目中使用了django 1.8和mongodb。我可以连接到数据库，但是当我想在Views.py中做某事时，我会遇到此错误：

ImproperlyConfigured at /make_histograms
settings.DATABASES is improperly configured. Please supply the ENGINE value.           
Check settings documentation for more details.
Request Method: POST
Request URL: http://127.0.0.1:8000/make_histograms
Django Version: 1.8
Python Executable: G:Stamp 2VENV2Scriptspython.exe
Python Version: 2.7.12
Python Path: ['G:\Stamp 2\znaczki2', 'G:\Stamp  2\VENV2\Scripts\python27.zip', 'G:\Stamp 2\VENV2\DLLs', 'G:\Stamp 2\VENV2\lib', 'G:\Stamp 2\VENV2\lib\plat-win', 'G:\Stamp 2\VENV2\lib\lib-tk', 'G:\Stamp 2\VENV2\Scripts', 'c:\python27\Lib', 'c:\python27\DLLs', 'c:\python27\Lib\lib-tk', 'G:\Stamp 2\VENV2', 'G:\Stamp 2\VENV2\lib\site-packages']
Server time: Tue, 20 Dec 2016 17:23:38 +0100
Installed Applications:
('django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'app')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'django.middleware.security.SecurityMiddleware')
Traceback:
File "G:Stamp 2VENV2libsite-packagesdjangocorehandlersbase.py" in get_response 
132.response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "G:Stamp 2VENV2libsite-packagesdjangoviewsdecoratorscsrf.py" in wrapped_view
58.         return view_func(*args, **kwargs)
File "G:Stamp 2znaczki2appviews.py" in make_histograms
62.             example.save()
File "G:Stamp 2VENV2libsite-packagesdjangodbmodelsbase.py" in save
710.                        force_update=force_update, update_fields=update_fields)
File "G:Stamp 2VENV2libsite-packagesdjangodbmodelsbase.py" in save_base
735.         with transaction.atomic(using=using, savepoint=False):
File "G:Stamp 2VENV2libsite-packagesdjangodbtransaction.py" in __enter__
150.             if not connection.get_autocommit():
File "G:Stamp 2VENV2libsite-packagesdjangodbbackendsbasebase.py" in get_autocommit
286.         self.ensure_connection()
File "G:Stamp 2VENV2libsite-packagesdjangodbbackendsdummybase.py" in complain
21.     raise ImproperlyConfigured("settings.DATABASES is improperly configured. "
Exception Type: ImproperlyConfigured at /make_histograms
Exception Value: settings.DATABASES is improperly configured. Please supply the ENGINE value. Check settings documentation for more details.

，但我看到MongoDB连接还可以：mongod.exe

有人可以帮我解决这个问题吗？

我的数据库sectiion in steratings.py

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.dummy',
}
}
_MONGODB_USER = 'marcin'
_MONGODB_PASSWD = '1234'
_MONGODB_HOST = 'localhost'
_MONGODB_NAME = 'znaczki'
_MONGODB_DATABASE_HOST = 
  'mongodb://%s:%s@%s/%s' 
  % (_MONGODB_USER, _MONGODB_PASSWD, _MONGODB_HOST, _MONGODB_NAME)
mongoengine.connect(_MONGODB_NAME, host=_MONGODB_DATABASE_HOST)

Answer 1

您的settings.py文件应包含以下内容：

import mongoengine
# ...
# DATABASES section should be:
DATABASES = {
    'default': {
        'ENGINE': '',
    },
}
SESSION_ENGINE = 'mongoengine.django.sessions'
_MONGODB_USER = 'db_user'
_MONGODB_PASSWD = 'db_password'
_MONGODB_HOST = 'db_host'
_MONGODB_NAME = 'db_name'
_MONGODB_DATABASE_HOST = 
    'mongodb://%s:%s@%s/%s' 
    % (_MONGODB_USER, _MONGODB_PASSWD, _MONGODB_HOST, _MONGODB_NAME)
mongoengine.connect(_MONGODB_NAME, host=_MONGODB_DATABASE_HOST)
# ...
AUTHENTICATION_BACKENDS = (
    'mongoengine.django.auth.MongoEngineBackend',
)