requestAction用法

1.建立一个控制器函数用与返回数据

// Controller/CommentsController.php class CommentsController extends AppController {     public function latest() {       if (empty($this->request->params['requested'])) {            throw new ForbiddenException();       }      return $this->Comment->find('all', array('order' => 'Comment.created DESC', 'limit' => 10));     } }

// View/Elements/latest_comments.ctp    $comments = $this->requestAction('/comments/latest');    foreach ($comments as $comment) {        echo $comment['Comment']['title'];   }

3.在任何位置放置元素以获取所需的输出

echo $this->element('latest_comments');

最好是用元素缓存不需要计算的数据。将元素的调用修改成如下的样子

echo $this->element('latest_comments', array('cache' => '+1 hour'));