By Ilya Grigorik on September 07, 2006 Wouldn't it be nice if you could validate the format and the existence of a URI/URL provided by the users in your Rails application? Well, I thought so. So after a little research I put together a validates_uri_existence_of.rb which does exactly that. Take a look below: require 'net/http' # Original credits: http://blog.inquirylabs.com/2006/04/13/simple-uri-v