Ruby url to html link conversion

Question

I'm building a simple chat app with Rails. when a user types in a url, I want it to be output as an html link (ie, "url").

I was wondering if there is any library or well known way to do this in Ruby. If not, I've got some decent regex sample code to work with...

ryanb · Accepted Answer · 2009-08-08 20:35:58Z

10

Check out the auto_link helper method provided by Rails. This turns all URLs and email addresses into clickable links (html anchor tags). Here's a code sample from the docs.

auto_link("Go to http://www.rubyonrails.org and say hello to [email protected]")
# => "Go to <a href=\"http://www.rubyonrails.org\">http://www.rubyonrails.org</a> and
#     say hello to <a href=\"mailto:[email protected]\">[email protected]</a>"

answered Aug 8, 2009 at 20:35

ryanb

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4 Comments

user94154 Over a year ago

awesome, thanks! so I could loop through every word in the message, if it passes the regex url test, render it as a link. I guess I'll have to figure out how to do this in the controller and not in a view. thanks again.

ryanb Over a year ago

No need to loop through every word, If you pass the entire string to auto_link it should just link the urls and emails. Also, if you need to call this method outside of the view, check out this episode: railscasts.com/episodes/132-helpers-outside-views

jwarzech Over a year ago

This method has been removed from rails 3.1 but is available as a standalone gem 'rails_autolink' you could also look at the 'rinku' gem that offers performance benefits over the rails implementation.

hammady Over a year ago

Removed from Rails 3.1 and packaged into auto_link gem

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