edit() public method

public edit ( )
 public function actionEdit($id)
 {
     $model = new Orders();
     $order_id = Yii::app()->request->getPost('order_id');
     $price = Yii::app()->request->getPost('price');
     $description = Yii::app()->request->getPost('description');
     $available = Yii::app()->request->getPost('available');
     $data = array('description' => $description, 'order_id' => $order_id, 'price' => $price, 'description' => $description, 'available' => $available);
     if (Yii::app()->request->isPostRequest) {
         $model->edit($data, $id);
     }
     $editOrders = $model->selectFromId($id);
     $this->render('edit', array('editOrders' => $editOrders));
 }