indexing config

controller.rb

class Controller < ApplicationController
  @items = Sunspot.search(ModelName) do
    fulltext params[:q], :fields => ["description_#{I18n.locale}".to_sym, :author]
  end
end

model_name.rb

class ModelName < ActiveRecord::Base
  searchable :auto_index => false, :auto_remove => false, :if => :is_indexable?  do
    text :author, :stored => true, :boost => 1.0, :more_like_this => true
    text :description_it, :stored => true, :boost => 1.0, :more_like_this => true do 
      self.whatever_gives_the_italian_description
    end
    text :description_en, :stored => true, :boost => 1.0, :more_like_this => true do 
      self.whatever_gives_the_english_description
    end
end

view.html.erb

<ul>
<% @items.each_hit_with_result do |hit, item| %>
  <li>Autore: <%= hit.stored(:author) %></li>
  <li>Descrizione: <%= hit.stored("description_#{I18n.locale}".to_sym) %></li>
<% end %>
</ul>