switch/addons/blog/view/default/common/commentlist.html

{volist name='commentlist' id='comment'}
<div class="comment-panel" id="comment-{$comment.id}">
    <div class="comment-panel-portrait">
        <img src="{$comment.avatar}" class="img-fluid rounded-circle" alt="">
    </div>
    <div class="comment-panel-content">
        <div class="comment-panel-content-item">
            <div class="comment-author">{$comment.username|htmlentities}</div>
            <div>{$comment.createtime|human_date}</div>
        </div>
        <div class="comment-panel-content-main">{$comment.content|htmlentities}</div>
        {volist name="$comment['sublist']" id='subcomment' }
        <div class="comment-secondary-panel" id="comment-{$subcomment.id}">
            <span class="triangle-icon"><i class="fa fa-sort-asc" aria-hidden="true"></i></span>
            <div class="comment-panel-content">
                <div class="comment-panel-content-item">
                    <div class="comment-author">{$subcomment.username|htmlentities}</div>
                    <div>{$subcomment.createtime|human_date}</div>
                </div>
                <div class="comment-panel-content-main">{$subcomment.content|htmlentities}</div>
            </div>
        </div>
        {/volist}
    </div>
    <div class="comment-reply"><a href="javascript:;" rel="{$comment.id}" title="@{$comment.username} " class="reply">回复</a></div>
</div>
{/volist}
{if $commentlist->isEmpty()}
<p class="text-muted">
    还没有人发表评论
</p>
{/if}
<div class="pager mt-3">
    {$commentlist->render()}
</div>