/**
  * Get elements from model.
  * @static
  * @param CModel $model
  * @return array
  */
 public static function getModelElements($model)
 {
     $elements = array();
     $scenario = $model->getScenario();
     foreach ($model->getFormElements() as $name => $element) {
         $on = array();
         if (isset($element['on']) && is_array($element['on'])) {
             $on = $element['on'];
         } else {
             if (isset($element['on'])) {
                 $on = preg_split('/[\\s,]+/', $element['on'], -1, PREG_SPLIT_NO_EMPTY);
             }
         }
         if (empty($on) || in_array($scenario, $on)) {
             unset($element['on']);
             $elements[$name] = $element;
         }
     }
     return $elements;
 }