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Override arbitrary Django settings via environment variables.

Project Description

Override arbitrary Django settings via environment variables.

  • Free software: BSD license

Installation

pip install django-env-overrides

Documentation

django-env-overrides lets you quickly adjust an existing Django app to load arbitrary settings from environment variables.

Setup

Add these lines to the end of your setup.py file:

import django_env_overrides
django_env_overrides.apply_to(globals())

Any environment variable prefixed with DJANGO__ will now be imported to your settings.

Example

settings.py:

DEBUG = True
MEDIA_URL = '/media/'
DATABASES = {
    'default': {
        'ENGINE': 'sqlite3',
    }
}
TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'OPTIONS': {
            'context_processors': [
                'django.contrib.auth.context_processors.auth',
            ]
        }
    }
]

import django_env_overrides
django_env_overrides.apply_to(globals())

Environment:

DJANGO__SECRET_KEY=secret
DJANGO__MEDIA_URL=/new_url/
DJANGO__bool__DEBUG=False
POSTGRES=postgres://uf07k1:wegauwhg@ec2-107-21-253-135.compute-1.amazonaws.com:5431/d8r82722
DJANGO__db__DATABASES__default=$POSTGRES
DJANGO__TEMPLATES__0__OPTIONS__context_processors__1='my.context.processor'

Result:

DEBUG = False
MEDIA_URL = '/new_url/'
SECRET_KEY = 'secret'
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'd8r82722',
        'HOST': 'ec2-107-21-253-135.compute-1.amazonaws.com',
        'USER': 'uf07k1',
        'PASSWORD': 'wegauwhg',
        'PORT': 5431,
    }
}
TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'OPTIONS': {
            'context_processors': [
                'django.contrib.auth.context_processors.auth',
                'my.context.processor',
            ]
        }
    }
]

Format for environment variables

The general format for environment variable names is:

<prefix>__<typecast>__<path>__<to>__<target>__<setting>

<prefix> defaults to DJANGO. If you want to use another prefix, use django_env_overrides.apply_to(globals(), prefix="MYPREFIX").

<typecast> (optional) is any type known to the django-environ package.
Currently the supported types are str, bool, int, float, json, list, tuple, dict, url, path, db_url, cache_url, search_url, and email_url. See the django-environ package for usage.

<typecast> is optional and defaults to str.

<path>__<to>__<target>__<setting> specifies the setting or subsetting the value should be assigned to. Path elements are treated as array indexes if they are integers, and otherwise as dictionary keys.

Development

See CONTRIBUTING.rst

Changelog

0.1.0 (2016-07-21)

  • First release on PyPI.
Release History

Release History

This version
History Node

0.1.0

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