public function storeValue($value)
 {
     $app = JFactory::getApplication();
     if ($app->isAdmin()) {
         if ($this->is_new) {
             if (!$value) {
                 $user = JFactory::getUser();
                 $value = $user->id;
             }
         }
         return parent::storeValue($value);
     } else {
         return true;
     }
 }