locale.rb

##
# This is an extension for ActiveRecord where if I had:
# 
#   post.description_ru = "I'm Russian"
#   post.description_en = "I'm English"
#   post.description_it = "I'm Italian"
# 
# with this extension if I had set:
# 
#   I18n.locale = :it
# 
# calling directly:
# 
#   post.description => post.description_it => "I'm Italian"
# 
module Locale

  module ClassMethods

    def has_locale
      include InstanceMethods
    end
  end # ClassMethods

  module InstanceMethods

    def method_missing(method_name, *arguments)
      attribute = "#{method_name}_#{I18n.locale}".to_sym
      return self.send(attribute) if I18n.locale.present? && self.respond_to?(attribute)
      super
    end
  end # InstanceMethods
end

ActiveRecord::Base.extend(Locale::ClassMethods)