I am trying to build a multi-page form with Yii, but am quite new to PHP and Yii and am wondering what the best practice is for writing a multi page form. So far, what I am planning to do is to add a hidden field named 'step' which contains the current step the user is on in the form (the form is broken into 3 steps/pages). So with that in mind, this is how I plan to handle the user clicking on previous/next buttons in the Controller:

public function actionCreate()
 {
  $userModel = new User;

  $data['activityModel'] = $activityModel; 
  $data['userModel'] = $userModel; 

  if (!empty($_POST['step']))
  {
   switch $_POST['step']:
    case '1':
     $this->render('create_step1', $data);
     break;

    case '2':
     $this->render('create_step2', $data);
     break;

  }else
  {
   $this->render('create_step1', $data);
  }
 }

Does this approach make sense? Or am I way off base and there is a much better and more optimized way of doing this in Yii/PHP?

Thanks!