title: grails datePicker data binding
body: <p>I've create a modified version of Grails' datePicker tag. It uses exactly the same parameters as the Grails datePicker, but for some reason the <code>Date</code> property of the object that these parameters are bound to is not being set.</p>
  
  <p>This class has a property <code>start</code> of type <code>Date</code> and the parameters that are being sent are</p>
  
  <ul>
  <li>start_year</li>
  <li>start_month</li>
  <li>start_day</li>
  <li>start_hour</li>
  <li>start_minute</li>
  </ul>
  
  <p>which are exactly the same as those used by the Grails datePicker. Is there a reason why these would bind to a Date property when the Grails datePicker is used, but not mine?</p>
  
  <p>Thanks,
  Don</p>