ulthon_information/view/index/common/_left.html

<div class="layui-col-md2">
    <div class="logo">
        <a href="/">
            <img src="{:get_source_link(get_system_config('site_logo'))}" alt="">
        </a>
    </div>
    <div class="nav-left-container">
        <div class="nav-left-list">
            <a href="/" {eq name='$Request.param.category_id|default=0' value='0' } class="current" {/eq}>全部</a>
            {volist name='list_header_nav' id='nav'}
            <a href="{$nav.value}" target="{$nav.target}">{$nav.title}</a>
            {/volist}
            {volist name='list_category_first_level' id='category'}
            <a href="{:url('Index/index',['category_id'=>$category.id])}" {eq name='$Request.param.category_id|default=0' value='$category.id' } class="current" {/eq}>{$category.title}</a>
            {/volist}
        </div>
        <div id="post-titles">

            <a style="display: block;" class="ul-group-title">
            </a>
            <div class="ul-nav-tree-2">

            </div>
        </div>
    </div>
</div>