title: (will_paginate) Find the page a record is in
body: <p>My setup: Rails 2.3.10, Ruby 1.8.7</p>
  
  <p>I'm using the will_paginate plugin and for a particular user, I need to implement a leaderboard feature showing the page his rating belongs to, is there a way to do that?</p>
  
  <p><strong>UPDATE:</strong>
  Ideally, this is done without returning all the records first, doing so negates a key benefit of using will_paginate.</p>