module LoginSystem

def authenticate
  #puts _process_action_callbacks.map(&:filter)
  if current_user
    session['user_id'] = current_user.id
    true
  else
    session[:return_to] = request.original_url
    respond_to do |format|
      format.html { redirect_to login_url }
      format.any(:xml,:json) { request_http_basic_authentication }
    end
    false
  end
end