Rails 3 Config

config.rb

# Rails 3 Config
# 
# In: config/application.yml
# 
#   development:
#     github:
#       key: test
#       secret: verysecret-dev
#   production:
#     github:
#       key: test
#       secret: verysecret-dev
# 
# Usage:
#   Rails.config.github.key
#   Rails.config.github.secret?

module Rails
  class Config
    def self.load(path = nil)
      path ||= Rails.root.join('config', 'application.yml')
      config = YAML.load(path.read)
      new(config[Rails.env.to_s] || config)
    end
    
    def self.new(value)
      return super if value.is_a?(Hash)
      value
    end
    
    attr_reader :attributes

    def initialize(attributes)
      @attributes = attributes
    end
    
    def method_missing(method_symbol, *arguments) #:nodoc:
      method_name = method_symbol.to_s

      if method_name =~ /(=|\?)$/
        case $1
        when "="
          attributes[$`] = arguments.first
        when "?"
          attributes[$`]
        end
      else
        if attributes.include?(method_name)
          return self.class.new(attributes[method_name])
        end
        
        super
      end
    end
  end
  
  def self.config
    @config ||= Config.load
  end
end