{foreach from=$lists item=l}
    <div style="cursor: pointer;">
        <i class="fa fa-minus-square-o" onclick="common.tree(this);" data="{$l->code}" data-stt="true"></i> 
        <span class="tree-drop">{$l->code}-{$l->name}</span>
        <div id="sub-tree-{$l->code}" style="padding-left: 20px;">
            {\app\widgets\TreeSub::widget(["pid"=>$l->code,"model"=>$model])}
        </div>
    </div>
{/foreach}