http://snippets.dzone.com/posts Sun, 18 May 2008 07:03:59 GMT DZone Snippets: RegularExpression code http://snippets.dzone.com/posts/show/3654 // description of your code here <br />A regular expression pattern that validates a URL string, either HTTP or HTTPS. <br /> <br /><code> <br />/^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$/ix <br /></code> <br /> <br />You can easily use it with validates_format_of in your Model... <br /> <br />For example, In a comment model, to check the :SiteURL on the comment creation: <br /> <br /><code> <br />class Comment < ActiveRecord::Base <br /> validates_format_of :SiteURL, :with => /^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(([0-9]{1,5})?\/.*)?$/ix, :on => :create <br />end <br /></code> <br /> <br /> Sat, 10 Mar 2007 07:54:26 GMT http://snippets.dzone.com/posts/show/3654 igeek (Geek)