I use this library when need to add translated fields to model.
Add to Gemfile
gem "simple_translate", :git => "git://github.com/tonic20/simple_translate.git"
Create model with fields for all locales
class CreateProducts < ActiveRecord::Migration
def change
create_table :products do |t|
t.string :name_ru
t.string :name_en
t.timestamps
end
end
end
Add to model
class Product
translate :name
end