How to save http referer in rails

Question

I\'m trying to save the site that a user came from when they sign up. Right now I have a before_filter in my ApplicationController:

before_filter :save_refe         


        

Answer 1

def save_referer
  session['referer'] = request.env["HTTP_REFERER"] || 'none' unless session['referer'] && !is_logged_in?
end

beautiful ;-)