osem-fcy/app/controllers/home_controller.rb

class HomeController < ApplicationController
  before_filter :respond_to_options
  skip_authorization_check

  def index
    @today = Date.current
    @current = Conference.where('end_date >= ?', @today).order('start_date ASC')
  end

  def respond_to_options
    respond_to do |format|
      format.html { head :ok }
    end if request.options?
  end
end