使用Yii創建多級菜單

Question

如何對yii中的多級菜單進行查詢？

比如我有一個這樣的表：

menu_name將遵循parrent_id它，所以它會形成一個hierarchical菜單

如何使用Yii在我的佈局上使輸出成爲html以上

我的代碼：

<?php 
Yii::import('zii.widgets.CMenu', true); 

class ActiveMenu extends CMenu 
{ 
    public function init(){ 

    $criteria = new CDbCriteria; 
    $criteria->condition='published=:idpub AND menu_controller=:menu'; 
    $criteria->params=array(':idpub'=>1, ':menu'=>'#'); 

    $items = Menu::model()->findAll($criteria); 

    echo "<ul id='yw1' class='nav'>"; 

     foreach ($items as $item) 
     { 
      echo "<li class='dropdown'> 
        <a href=".$item->menu_controller." data-toggle='dropdown' class='dropdown-toggle'> 
        <i class='icon-white icon-list'></i>".$item->menu_name."<b class='caret'></b></a> 
       </li>"; 
     } 

     echo "</ul>"; 

     parent::init(); 
    } 
} 

但是在上面的代碼我只得到parents data。我怎麼想循環得到childs data包括在這樣的HTML代碼中每一個做父母的菜單：

<ul id="yw1" class="nav"> 
    <li><a href="/app/home.html"><span class="icon-white icon-tasks"></span> Home</a></li> 

    <li class="dropdown"> 
     <a href="#" data-toggle="dropdown" class="dropdown-toggle"> 
     <i class="icon-white icon-list"></i>Master<b class="caret"></b></a> 
     <ul class="dropdown-menu"> 
      <li><a href="expedition"><span class="icon-bar icon-list"></span> Expedition</a></li> 
     </ul> 
     <ul class="dropdown-menu"> 
      <li><a href="partner"><span class="icon-bar icon-list"></span> Partner</a></li> 
     </ul> 
     <ul class="dropdown-menu"> 
      <li><a href="user"><span class="icon-bar icon-list"></span> User</a></li> 
     </ul> 
    </li> 

    <li class="dropdown"> 
     <a href="#" data-toggle="dropdown" class="dropdown-toggle"> 
     <i class="icon-white icon-list"></i>Transaction<b class="caret"></b></a> 
     <ul class="dropdown-menu"> 
      <li><a href="processin"><span class="icon-bar icon-list"></span> Process In</a></li> 
     </ul> 
     <ul class="dropdown-menu"> 
      <li><a href="processout"><span class="icon-bar icon-list"></span> Process Out</a></li> 
     </ul> 
     etc .... 
     etc .... 
     etc .... 
    </li> 
</ul> 

感謝

Answer 1

您可以創建for循環遞歸函數像這樣

<?php 
    class ActiveMenu extends CMenu 
    { 
     public function init(){ 
      $this->renderChilds(); 
     } 

     protected function getChilds($parent_id) 
     { 
      $criteria = new CDbCriteria; 
      $criteria->condition='published=:idpub AND menu_controller=:menu AND parent_id = :parent'; 
      $criteria->params=array(':idpub'=>1, ':menu'=>'#', ':parent'=>$parent_id); 
      $items = Menu::model()->findAll($criteria); 
      return $items; 
     }    

     public function renderChilds($parent_id=0, $class='nav') 
     { 
      $items = $this->getChilds($parent_id); 
      if (!empty($items)) 
      { 
       echo "<ul class='$class'>"; 
       foreach ($items as $item) 
       { 
        echo "<li class='dropdown'> 
        <a href=".$item->menu_controller." data-toggle='dropdown' class='dropdown-toggle'> 
        <i class='icon-white icon-list'></i>".$item->menu_name."<b class='caret'></b></a>"; 
        $this->renderChilds($item->id, 'dropdown-menu');     
        echo "</li>"; 
       } 
       echo "</ul>"; 
      } 
     } 

     ... 
    }