From: David Heinemeier Hansson <david.heinemeier@...>
Date: 2005-07-17T23:36:04+09:00
Subject: Re: setting Expires HTTP response header

> I found my own answer.
> 
> require 'date'
> 
> # Get current time in GMT.
> t = Time.now.gmtime
> 
> # Add one hour.
> t += 60*60
> 
> # Set "Expires" header to this time, properly formatted.
> res['Expires'] = t.strftime("%a, %d %b %Y %H:%M:%S GMT")

As a pointer for others looking to do the same in Rails, we've wrapped
it in a method you can call inside any action:

expires_in 20.minutes

..there's also "expires_now". The method is available in beta gems and
will be a part of the next release.
-- 
David Heinemeier Hansson
http://www.loudthinking.com -- Broadcasting Brain
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