$(".submit-btn").click(function() {

     var $this = $(this);

     var name = $this.parent().siblings().children('.name1').val();

     var content = $this.parent().siblings().children('.comment').val();

     if (name == "" || content == "") {

         alert("昵称或者评论不能为空哦");

         return false;

     }

 });

 $rules = array(//定义动态验证规则

     array('comment', 'require', '评论不能为空'),

     array('username', 'require', '昵称不能为空'),

 //            array('username', '3,15', '用户名长度必须在3-15位之间！', 0, 'length', 3),

 );

 $data = array(

     'content' => I("post.comment"),

     'ip' => get_client_ip(),

     'add_time' => time(),

     'pid' => I('post.pid'),

     'author' => I('post.username'),

 ); 

 $comment = M("comment"); // 实例化User对象

 if (!$comment->validate($rules)->create()) {//验证昵称和评论

     exit($comment->getError());

 } else {

     $add = $comment->add($data);

     if ($add) {

         $this->success('评论成功');

     } else {

         $this->error('评论失败');

     }

 }

 function CommentList($pid = 0, &$commentList = array(), $spac = 0) {

     static $i = 0;

     $spac = $spac + 1; //初始为1级评论

     $List = M('comment')->

                     field('id,add_time,author,content,pid')->

                     where(array('pid' => $pid))->order("id DESC")->select();

     foreach ($List as $k => $v) {

         $commentList[$i]['level'] = $spac; //评论层级

         $commentList[$i]['author'] = $v['author'];

         $commentList[$i]['id'] = $v['id'];

         $commentList[$i]['pid'] = $v['pid']; //此条评论的父id

         $commentList[$i]['content'] = $v['content'];

         $commentList[$i]['time'] = $v['add_time'];

         // $commentList[$i]['pauthor']=$pautor;

         $i++;

         $this->CommentList($v['id'], $commentList, $spac);

     }

     return $commentList;

 }