attribute_accessors.rb

Path: vendor/rails/activesupport/lib/active_support/core_ext/module/attribute_accessors.rb
Last Update: Wed May 16 14:05:21 +0900 2012

Extends the module object with module and instance accessors for class attributes, just like the native attr* accessors for instance attributes. 

 module AppConfiguration
   mattr_accessor :google_api_key
   self.google_api_key = "123456789"

   mattr_accessor :paypal_url
   self.paypal_url = "www.sandbox.paypal.com"
 end

 AppConfiguration.google_api_key = "overriding the api key!"

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