Flask: How to manage different environment databases?

Question

I am working on an app which looks similar to

facebook/
         __init__.py
         feed/
             __init__.py
             business.py
             vi         


        

Answer 1

You can create a "config" module which contains the configuration for each environment. Thereafter the currently running environment can be specified by setting a shell variable.

If you are initializing your flask application in the main init file, the configuration also could be set there. This is how I set my configuration:

def setup_config(app):
    """Set the appropriate config based on the environment settings"""
    settings_map = {'development': DevelopmentSettings,
                    'staging': StagingSettings,
                    'testing': TestingSettings,
                    'production': ProductionSettings}
    env = environ['ENV'].lower()
    settings = settings_map[env]
    app.config.from_object(settings)

Setting up environment variable before running the development server or even the tests can be a hassle, therefore I automate these actions with a makefile.

Also take a look at flask-script http://flask-script.readthedocs.org/en/latest/.