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A multi-layered approach to settings
pip install flapjack-stack==1.0.0
flapjack_stack
================
This provides a simple way to handle settings in a multi-layer fashion, which
allows you to composing settings by add in different configuration components.
It will read from files, objects, and environment variables.
Example Usage:
from flapjack_stack import FlapjackStack
settings = FlapjackStack()
settings.add_layer_from_file('/path/to/our_file')
settings.add_layer(thing)
settings.add_layer_from_env()
Which will create a new FlapjackStack instance, then read settings in from
a file, then the thing object and finally from the environment. This would
result in a group of settings like:
===== ======
Layer Source
===== ======
3 loaded from env
2 loaded from thing object
1 loaded from '/path/to/our_file'
Base Empty created during init
===== ======
And settings would be returned from the top to the bottom. For example if we
had a setting called COOKIES in both the thing object and our_file, the one from
the thing object would be returned.
**NOTE**
``add_layer_from_env()`` only searchs for environment variables already in the
settings object regardless of their layer that are prefixed with an ``FJS_`` at
the moment it is called. So if you add the variable later, it will not be seen.
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