General Config class for handling YAML files

config.rb

class Config
  attr_reader :data, :env
  
  def self.config_path
    File.join('config')
  end

  def initialize(opts)
    @env = opts[:env]
    filename = opts[:filename]
    @data = YAML::load_file(File.join(self.class.config_path,filename))
    define_config_methods(data[env].keys)
  end

  def define_config_methods(names)
    names.each do |name|
      class_eval <<-EOS
        def #{name}
          data[env]['#{name}']
        end
      EOS
    end
  end
end