Почему я получаю сообщение «NotImplementedError: объекты базы данных не реализуют проверку значения истинности или bool( ⇐ Python

[Anonymous]

Я пытаюсь подключить Django к MongoDB с помощью Djongo. Я изменил параметр базы данных, но получаю следующую ошибку:

NotImplementedError: объекты базы данных не реализуют проверку истинности или bool().

когда я запускаю команду makemigration.
Пожалуйста, кто-нибудь может объяснить, почему я получаю эту ошибку и как решить эту проблему?
Я включил свои настройки.py файл, журнал ошибок и образ настройки MongoDB Compass.
settings.py

Код: Выделить всё

"""
Django settings for Chatify project.

Generated by 'django-admin startproject' using Django 3.2.9.

For more information on this file, see
https://docs.djangoproject.com/en/3.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.2/ref/settings/
"""

from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-1k4mo05el_0112guspx^004n-i&3h#u4gyev#27u)tkb8t82_%'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []

# Application definition

INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'api.apps.ApiConfig',
]

MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'Chatify.urls'

TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]

WSGI_APPLICATION = 'Chatify.wsgi.application'

# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databases

# DATABASES = {
#     'default': {
#         'ENGINE': 'django.db.backends.sqlite3',
#         'NAME': BASE_DIR / 'db.sqlite3',
#     }
# }
DATABASES = {
'default': {
'ENGINE': 'djongo',
'NAME': 'users',
}
}

# Password validation
# https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME':  'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]

# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/

STATIC_URL = '/static/'

# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

Журнал ошибок

Код: Выделить всё

File "manage.py", line 22, in 
main()
File "manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\__init__.py", line 419, in execute_from_command_line
utility.execute()
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\__init__.py", line 413, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\base.py", line 367, in run_from_argv
connections.close_all()
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\utils.py", line 213, in close_all
connection.close()
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\asyncio.py", line 33, in inner
return func(*args, **kwargs)
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\base\base.py", line 294, in close
self._close()
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\djongo\base.py", line 208, in _close
if self.connection:
File "C:\Users\DELL\AppData\Local\Programs\Python\Python37\lib\site-packages\pymongo\database.py", line 829, in __bool__
raise NotImplementedError("Database objects do not implement truth "
NotImplementedError: Database objects do not implement truth value testing or bool(). Please compare with None instead: database is not None

MongoDB Compass
[img]https://i. sstatic.net/OSNPV.png[/img]


Подробнее здесь: https://stackoverflow.com/questions/701 ... nt-truth-v