title: How to create a custom validator in Play Framework 2.0?
body: <p>Play 1.0 comes with a full featured validation framework base on <a href="http://oval.sourceforge.net/" rel="noreferrer">http://oval.sourceforge.net/</a>.</p>
  
  <p>With the release of 2.0, my custom validators do not work anymore.</p>
  
  <p>How does one create custom validator using Play Framework 2.0 ?</p>