gistfile1.rb

module RouteTranslation
  mattr_accessor :translations
  mattr_accessor :reverse_translations
  
  rf=File.join(RAILS_ROOT,'config','route_translation.yml')
  self.translations=YAML.load_file(rf)
  
  self.reverse_translations=Hash.new
  translations.keys.each do |key|
    self.reverse_translations.merge! translations[key].invert
  end
end


ActionController::Routing::RouteSet.class_eval do   
    def recognize_with_translation(request)       
      
      splitted_path=request.path.split('/')
      first_segment = splitted_path[1]
      
      
      if RouteTranslation.reverse_translations[first_segment]
        splitted_path[1]=RouteTranslation.reverse_translations[first_segment]
        
        translated_path=splitted_path.join('/')
        env=request.instance_variable_get('@env')
        env['REQUEST_URI']=translated_path
        request.instance_variable_set '@env', env 
        request.instance_variable_set '@path', translated_path  
      end   
     
      recognize_without_translation(request)
  end
  alias_method_chain :recognize, :translation
end