Yacht is an application configuration gem that lets you define settings for multiple environments in YAML files. It is similar to AppConfig with additional features like:
use of ClassyStruct for improved performance over OpenStruct
protection of sensitive settings by specifying a whitelist in a YAML file
easy override of nested keys (not pretty with YAML references)
no need for an initializer or constant to store loaded values (just use Yacht.my_key)
Rails: Add this to your Gemfile and run the bundle command.
Outside of rails, just require the gem as usual:
require 'rubygems' require 'yacht'
Step 1: YAML files
First create two (or more) YAML files in the same directory to define your settings:
# config/yacht/base.yml (required) production: cdn_host: 220.127.116.11 super_secret_info: aws_key: foofoo twitter_key: barbar test: cdn_host: localhost super_secret_info: # you can safely overwrite a single value in a nested key # YAML references (& and *) don't let you do this # see https://gist.github.com/979804 for an explanation aws_key: bazbaz # config/yacht/whitelist.yml (required) # any keys specified here can be used as a whitelist filter: # Yacht::Loader.to_hash(:apply_whitelist? => true) # or # Yacht::Loader.to_classy_struct(:apply_whitelist? => true) # (by default the whitelist is ignored) # NOTE: the whitelist is ignored when using Yacht.my_key or Yacht['my_key'] # you have to use Yacht::Loader#to_hash or # Yacht::Loader#to_classy_struct to use the whitelist - super_secret_info # config/yacht/local.yml (optional) # any values set in local.yml will override values set in base.yml # useful for development and testing production: cdn_host: localhost
Step 2: Use Yacht.my_key or Yacht['my_key']
# now you can access any key set in your YAML files with: # Yacht.my_key
Outside of rails, you need to tell Yacht where your YAML files are stored, and what environment you want to use.
Yacht::Loader.dir = '/path/to/YAML/dir' Yacht::Loader.environment = 'my_environment' Yacht.my_key
Yacht is licensed under the MIT License with one addition: The Software shall be used for Good, not Evil.