/**
* Valid date
*
* Default format is given by the current user language settings.
*
* @see #513
*/
public function date($format = NULL)
{
if (is_null($format)) {
$format = $this->platform->getDateFormat();
}
$template = array('valid_date', array($format));
return $this->addToChain(__FUNCTION__, $template, $format);
}
