title: rails i18n - How to handle case of a nil date being passed ie l(nil)
body: <p>I am working with a lot of legacy data and occasionally a datetime field is nil/null.  This breaks the localization.  Is there a recommended way of fixing this aside from doing this:</p>
  
  <pre><code>dt = nil
  l(dt) unless dt.nil?
  </code></pre>