Yii表单生成器不依赖Model

/**
 * @author Ryan <yuansir@live.cn/yuansir-web.com>
 */
class UCForm extends CForm
{

 public function render()
 {
  $output = $this->renderBegin();

  foreach ($this->getElements() as $element)
  {
   $output .= $element->render();
  }

  foreach ($this->getButtons() as $button)
  {
   $output .= $button->render();
  }

  $output .= $this->renderEnd();
  return $output;
 }

 public function renderElement($element)
 {
  if (is_string($element))
  {
   if (($e = $this[$element]) === null && ($e = $this->getButtons()->itemAt($element)) === null)
    return $element;
   else
    $element = $e;
  }
  if ($element->getVisible())
  {
   //UCFormInputElement 代替 CFormInputElement
   if ($element instanceof UCFormInputElement)
   {
    if ($element->type === 'hidden')
     return "<div style="visibility:hidden">n" . $element->render() . "</div>n";
    else
     return "<div class="row field_{$element->name}">n" . $element->render() . "</div>n";
   }
   else if ($element instanceof CFormButtonElement)
    return $element->render() . "n";
   else
    return $element->render();
  }
  return '';
 }

}

/**
 * @author Ryan <yuansir@live.cn/yuansir-web.com>
 */
class PlayerSearchController extends Controller
{

 public function actionIndex()
 {
  $config = array(
      'class' => 'ddd',
      'action'=>'',
      'elements' => array(
   '<br><br>',
   'username' => array(
       'label'=>'用户名啊',//注意这里的label
       'type' => 'text',
       'maxlength' => 32,
       'value' => ''
   ),
   '<br><br>',
   'password' => array(
       'label'=>'昵称啊',//注意这里的label
       'type' => 'password',
       'maxlength' => 32,
       'value' => ''
   ),
      ),
      'buttons' => array(
   'login' => array(
       'type' => 'submit',
       'label' => 'Login',
   ),
      ),
  );

  $model = new CFormModel();
  $form = new UCForm($config, $model);
  $this->render('index', compact('form'));
 }

}