coolfig 3.1.0

Helpers for dealing with application settings

COOLFIG

Coolfig is a library to easily write configuration specifications to be fulfilled by various sources.

• Free software: MIT license
• Documentation: http://coolfig.rtfd.org

Installation

pip install coolfig

Example

Define your schema:

from coolfig import Settings, Value, types

class DefaultSettings(Settings):
     SECRET_KEY = Value(str)
     DEBUG = Value(types.boolean, default=False)
     DB_URL = Value(types.sqlalchemy_url)
     LOCALES = Value(types.list(str))

Instantiate the configuration with a data provider:

from coolfig import EnvConfig

settings = DefaultSettings(EnvConfig(prefix='MYAPP_'))

Profit:

if settings.DEBUG:
    print(settings.SECRET_KEY)
else:
    print(settings.LOCALES)

connect(settings.DB_URL)

Django integration

In your settings.py file:

from coolfig import EnvConfig, load_django_settings

INSTALLED_APPS = (
   'django.contrib.admin',
   'django.contrib.auth',
   'django.contrib.contenttypes',
   'django.contrib.sessions',
   'django.contrib.messages',
   'django.contrib.staticfiles',

   'testprj.my_custom_app',
)

MIDDLEWARE_CLASSES = (
   '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.messages.middleware.MessageMiddleware',
   'django.middleware.clickjacking.XFrameOptionsMiddleware',
   'django.middleware.security.SecurityMiddleware',
)

ROOT_URLCONF = 'testprj.urls'

WSGI_APPLICATION = 'testprj.wsgi.application'

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',
            ],
      },
   },
]

load_django_settings(EnvConfig(), locals())

Then, in each settings submodule of each app, you can define additional setting entries to be added to the main settings object. For example, in testprj/my_custom_app/settings.py you can add the following:

from coolfig import Settings, Value

class AppSettings(Settings):  # The class has to be named AppSettings
   MY_APP_SETTING = Value(str)

Usage is 100% compatible with Django’s settings machinery:

from django.conf import settings

settings.MY_APP_SETTING

History

3.1.0 - 2018-08-23

• Make EnvDirConfig importable from coolfig.

3.0.0 - 2018-08-23

• Removed explicit support for secrets in favor of EnvDirConfig and a FallbackProvider.
• Use black and isort for formatting.
• Improved tests coverage

2.0.0 - 2018-08-03

• Support for Docker secrets.

1.0.2 - 2016-03-14

• Additional bug-fixing.

1.0.1 - 2016-03-14

• Fixed a bug in AppConfig checking.

1.0.0 - 2016-03-14

• Added support for Django AppConfig (including custom settings path configured with a settings property on the config class.
• Officially supporting Django 1.4, 1.5, 1.6, 1.7, 1.8 and 1.9, running on Python 2.7, 3.4 (where Django supports itself supports it) and PyPy.

0.4.0 - 2015-10-05

• Added support for the CACHES Django settings directive
• Added support for computed_values
• Added initial documentation stub

0.3.0 - 2015-07-20

• Added first-class support for Django
• Added some more importing shortcuts (EnvConfig, DictConfig, load_django_settings)
• Added a DictValue value, able to load multiple keys with the same prefix into the same value
• Added an API to merge different settings schema into an existing object

0.2.0 - 2015-05-31

• Added a EnvConfig provider
• Added a dottedpath value type

0.1.0 – 2015-05-30

• Initial release