16-1 取得2層選單

1. 在admin_nav.php
   22行附近，stopLevel 設為2

    
   #foreign key
   $foreign = array(
     "menuTop" => array("title" => "上方選單","stopLevel"=>2),
     "menuFoot" => array("title" => "頁尾選單","stopLevel"=>1)
   );

    

2. 至後台輸入幾個2層選單
3. 至foot.php
   可以取消註解 「//print_r($menuTop);die();」看一下資料是否正確

   
   #----得到下拉選單
   #引入選單物件
   include_once WEB_PATH . "/class/ugmKind.php";;
   #實體化 類別物件
   $tbl = "{$WEB['moduleName']}_kind";//取得主要資料庫
   $kind = "menuTop";
   $stopLevel = 2; //層數
   $moduleName = $WEB['moduleName'];          //專案名稱
   //(資料表,分類，層數，父層)
   $ugmKind = new ugmKind($tbl, $kind, $stopLevel,$moduleName);//
   $menuTop = $ugmKind->get_listArr();
   $smarty->assign("menuTop", $menuTop);
   //print_r($menuTop);die();
   #---------------------------------
   

    

4. 分析二層的選單樣板

       <ul class="navbar-nav mr-auto">
         <li class="nav-item active">
           <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
         </li>
         <li class="nav-item">
           <a class="nav-link" href="#">Link</a>
         </li>
         <li class="nav-item">
           <a class="nav-link disabled" href="#">Disabled</a>
         </li>
         <li class="nav-item dropdown">
           <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown04" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
           <div class="dropdown-menu" aria-labelledby="dropdown04">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
             <a class="dropdown-item" href="#">Something else here</a>
           </div>
         </li>
       </ul>

   只有一層時

         <li class="nav-item active">
           <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
         </li>

   
   有二層時的樣板
    

         <li class="nav-item dropdown">
           <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown04" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
           <div class="dropdown-menu" aria-labelledby="dropdown04">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
             <a class="dropdown-item" href="#">Something else here</a>
           </div>
         </li>

   後台送來的變數得知，如果有 「sub」有值，則有第2層

5. 樣板(請根據佈景調整)

   
       <ul class="navbar-nav mr-auto">
       	<{foreach from=$menuTop item=row}>
       		<{if $row.sub}>
       			<{*  有2層 *}>    				
     				<li class="nav-item dropdown">
     				  <a class="nav-link dropdown-toggle" href="<{$row.url}>" id="dropdown<{$row.sn}>" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"><{$row.title}></a>
     				  <div class="dropdown-menu" aria-labelledby="dropdown<{$row.sn}>">
   
   		    			<{foreach from=$row.sub item=row2}>    					
   		  				  <a class="dropdown-item" href="<{$row2.url}>"<{if $row2.target}>target="_blank"<{/if}>><{$row2.title}></a>
   		    			<{/foreach}>
   
     				  </div>
     				</li>
   
       		<{/else}>	
       			<{*  只有一層 *}>
   		      <li class="nav-item">
   		        <a class="nav-link" href="<{$row.url}>" <{if $row.target}>target="_blank"<{/if}>><{$row.title}></a>
   		      </li>
       		<{/if}>
   
       	<{/foreach}>
       </ul>

    

6.