Acts_as_indexed and UTF-8.rb

# sudo gem install stringex
# "Щукинская".to_ascii => Shchukinskaia
# "щукинская".to_ascii => shchukinskaia

require 'stringex'
class Post < ActiveRecord::Base
  acts_as_indexed :fields => [:ascii_title, :ascii_body]

  private
  
  def ascii_title
    self.title.to_ascii
  end
  
  def ascii_body
    self.body.to_ascii
  end
end

class PostsController < ApplicationController

  def search
    @posts = Post.find_with_index(params[:query].to_ascii)
  end

end