title: Get absolute URL for paperclip attachment
body: <p>Is it possible to get the absolute URI for a Paperclip attachment? Right now, the problem is that the production environment is deployed in a sub-URI (on Passenger: <code>RackBaseURI</code>), but <code>&lt;paperclip attachment&gt;.url</code> returns the Rails-app relative URI (<code>/system/images/...</code>). Is there a way to get the absolute URI for Paperclip attachments?</p>
  
  <p>I'm using Paperclip v2.7 and Rails 3.2.8. </p>