osem-fcy/app/controllers/admin/rooms_controller.rb

class Admin::RoomsController < ApplicationController
  before_filter :verify_organizer

  def show
    render :rooms_list
  end

  def update
    if @conference.update_attributes(params[:conference])
      redirect_to(admin_conference_rooms_path(
                  conference_id: @conference.short_title),
                  notice: 'Rooms were successfully updated.')
    else
      redirect_to(admin_conference_rooms_path(
                  conference_id: @conference.short_title),
                  notice: 'Room update failed.')
    end
  end
end