参考网址
https://blog.csdn.net/yums467/article/details/50749968 我根据的这个
思路
1 先建立个评论的数据库表，字段要有 文章id ，评论内容，parent_id, uid
2评论的时候插入文章id ,uid 然后评论内容就OK了
实现步骤
html 页面中
<!--comments-->
<h3>{$num} 评论</h3>
<div class="comments">
<ul class="comments-list">
{volist name="commlist" id="data"}
<li comment_id="{$data['id']}">
<li class="comments_li">
<!-- 一级评论 -->
<div class="comment clearfix">
<img src="images/avatar.png" class="avatar" />
<p class="meta">{$data.nickname} says:<br /><small></small></p>
<div class="textarea">
<p>{$data.content} </p>
</div>
<div class="meta"><a href="javascript:;" id="replay_id" comment_id="{$data.id}" class="reply_btn" >回复</a></div>
</div>
<!-- 二级评论 -->
<ul class="clearfix">
{volist name="data.children" id="child" }
<li comment_id="{$child.id}">
<li>
<div class="comment clearfix">
<!-- <img src="images/avatar.png" alt="avatar" class="avatar" /> -->
<img src="images/avatar.png" class="avatar" />
<p class="meta">{$child.nickname} says:<br /><small>{$child.create_time} </small></p>
<div class="textarea">
<p>{$child.content}</p>
</div>
<!-- <a href="javascript:;" class="reply_btn" >回复</a> -->
<div class="meta"><a href="javascript:;" id="replay_id" comment_id="{$child.id}" class="reply_btn" >回复</a></div>
<!-- <div class="meta"> <a class="comment-reply" replyswitch="off" comment_id="{$child.id}">回复</a> </div> -->
</div>
<!-- 三级评论 -->
<ul class="clearfix">
{volist name="child.children" id="grandson" }
<li comment_id="{$grandson.id}">
<li>
<div class="comment clearfix">
<img src="images/avatar.png" class="avatar" />
<p class="meta">{$grandson.nickname} says:<br /><small>May 17, 2012</small> </p>
<div class="textarea">
<p>{$grandson.content}</p>
</div>
<!-- 三级评论就不能回复了 -->
<!-- <div class="meta"><a href="javascript:;" id="replay_id" comment_id="{$grandson.id}" class="reply_btn" >回复</a></div> -->
</div>
</li>
{/volist}
</ul>
</li>
{/volist}
</ul>
</li>
{/volist}
</ul>
</div>
<hr />
<!-- 评论框 -->
<form method="post" action="home/article/add_nullcomment.html" enctype="multipart/form-data" />
<div class="clear"></div>
<div class="af-outer af-required">
<div class="af-inner">
<input type="hidden" name="art_id" value="{$data['id']}" />
<label for="input-message" id="message_label">发表 评论:</label>
<textarea name="message" id="input-message" cols="30" class="text-input span8"></textarea>
<label class="error" for="input-message" id="message_error">Message is required.</label>
</div>
</div>
<div class="af-outer af-required">
<div class="af-inner">
<input type="submit" name="button" class="btn btn-welcome btn-large" value="发布" />
<!-- <input type="submit" name="submit" class="form-button btn btn-welcome btn-large" id="submit_btn" value="提交!" /> -->
</div>
</div>
</form>
控制器中
111// 展示评论内容到html页面
//获取评论总数
id)->count();
num);
// 显示评论列表,应该是pid是0的，id是传过来的id的遍历 $id 就是文章表中的id
$data4=array();
id)->order(‘id asc’)->find(); // 取id最小的一条，取出来
// $parent_id = $hh[‘id’]; // id
$parent_id = $hh[‘parent_id’];
this->getCommlist($parent_id );
//获取评论列表
$this->assign("commlist",$data4); // 在这显示的评论列表
222 /**
*递归获取评论列表，这一步是最重要的，将评论内容以 tree 格式展示
*/
// 传过来的参数 parent_id 要加 $
protected function getCommlist(parent_id,&$result = array())
{
parent_id)->order(“create_time desc”)->select();
if(empty($arr))
{
return array();
}
foreach ($arr as $cm)
{
$thisArr=&$result[];
$cm["children"] = $this->getCommlist($cm["id"],$thisArr);
$thisArr = $cm;
}
return $result;
}
js 中
// 加载回复框
//页面加载完毕后开始执行的事件
$(".reply_btn").click(function(){
var parent_id = $(this).attr("comment_id"); //要回复的评论id
$(".reply_textarea").remove();
// 加载回复框
$(this).parent().append("<div class='reply_textarea' <textarea id='replay_content' rows='5' cols='100' </textarea <br/ <input type='submit' onclick='submit_button('+parent_id')' value='发表' /> </div")
// 提交回复内容到后台
function submit_button(parent_id){
var b = document.getElementById(‘replay_content’).value;
.ajax({
type:‘POST’,
url:“home/article/add_comment.html”,
data:{
“content”: b,
“comment_id”: parent_id,
“art_id”: {$data[‘art_id’]},
},
success:function(data){
if (data.code == ‘3’)
{
alert(成功);
}else{
alert(失败);
}
},
error:function(){
}
});
}
333 js 中调的方法
// 添加子评论
public function add_comment()
{
$data = $_POST;
$uname1 = session::get(‘USER_INFO’);
$uname = $uname1[‘uname’];
$uid = $uname1[‘uid’];
$datb['content'] = $data['content'];
$datb['uid'] = $uid;
$datb['parent_id'] = $data['comment_id'];
$datb['art_id'] = $data['art_id']; // 文章id
$datb['nickname'] = $uname;
$datb['create_time'] = date('Y-m-d H:i:s');
$result = DB::name('comment')->insert($datb);
if($result)
{
$returnData = ['code'=>3, 'info'=>'评论成功'];
}else{
$returnData = ['code'=>4, 'info'=>'评论失败'];
}
// $returnData = json_encode($shanchu, JSON_UNESCAPED_UNICODE);
// var_dump(json_encode($returnData));
return json_encode($returnData,JSON_UNESCAPED_UNICODE);
}