欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

thinkPHP实现基于ajax的评论回复功能

程序员文章站 2023-02-20 15:52:03
本文实例讲述了thinkphp实现基于ajax的评论回复功能。分享给大家供大家参考,具体如下: 控制器代码:

本文实例讲述了thinkphp实现基于ajax的评论回复功能。分享给大家供大家参考,具体如下:

控制器代码:

<?php
namespace home\controller;
use think\controller;
class indexcontroller extends controller {
  public function index(){
    $num = m('comment')->count(); //获取评论总数
    $this->assign('num',$num);
    $data=array();
    $data=$this->getcommlist();//获取评论列表
    $this->assign("commlist",$data);
    $this->display('index');
  }
  /**
  *添加评论
  */
  public function addcomment(){
    $data=array();
    if((isset($_post["comment"]))&&(!empty($_post["comment"]))){
      $cm = json_decode($_post["comment"],true);//通过第二个参数true,将json字符串转化为键值对数组
      $cm['create_time']=date('y-m-d h:i:s',time());
      $newcm = m('comment');
      $id = $newcm->add($cm);
      $cm["id"] = $id;
      $data = $cm;
      $num = m('comment')->count();//统计评论总数
      $data['num']= $num;
    }else{
      $data["error"] = "0";
    }
    echo json_encode($data);
  }
  /**
  *递归获取评论列表
  */
  protected function getcommlist($parent_id = 0,&$result = array()){
    $arr = m('comment')->where("parent_id = '".$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;
  }
}

javascript代码:

$(function(){
  //点击提交评论内容
  $('body').delegate('.comment-submit','click',function(){
    var content = $.trim($(this).parent().prev().children("textarea").val());//根据布局结构获取当前评论内容
    $(this).parent().prev().children("textarea").val("");//获取完内容后清空输入框
    if(""==content){
      alert("评论内容不能为空!");
    }else{
      var cmdata = new object();
      cmdata.parent_id = $(this).attr("parent_id");//上级评论id
      cmdata.content = content;
      cmdata.nickname = "游客";//测试用数据
      cmdata.head_pic = "/public/images/default.jpg";//测试用数据
      var replyswitch = $(this).attr("replyswitch");//获取回复开关锁属性
      $.ajax({
        type:"post",
        url:"/index.php/home/index/addcomment",
        data:{
          comment:json.stringify(cmdata)
        },
        datatype:"json",
        success:function(data){
          if(typeof(data.error)=="undefined"){
            $(".comment-reply").next().remove();//删除已存在的所有回复div
            //更新评论总数
            $(".comment-num").children("span").html(data.num+"条评论");
            //显示新增评论
            var newli = "";
            if(cmdata.parent_id == "0"){
             //发表的是一级评论时,添加到一级ul列表中
             newli = "<li comment_id='"+data.id+"'><div ><div><img class='head-pic' src='"+data.head_pic+"' alt=''></div><div class='cm'><div class='cm-header'><span>"+data.nickname+"</span><span>"+data.create_time+"</span></div><div class='cm-content'><p>"+data.content+"</p></div><div class='cm-footer'><a class='comment-reply' comment_id='"+data.id+"' href='javascript:void(0);'>回复</a></div></div></div><ul class='children'></ul></li>";
              $(".comment-ul").prepend(newli);
            }else{
             //否则添加到对应的孩子ul列表中
              if('off'==replyswitch){//检验出回复关闭锁存在,即三级评论不再提供回复功能
                newli = "<li comment_id='"+data.id+"'><div ><div><img class='head-pic' src='"+data.head_pic+"' alt=''></div><div class='children-cm'><div class='cm-header'><span>"+data.nickname+"</span><span>"+data.create_time+"</span></div><div class='cm-content'><p>"+data.content+"</p></div><div class='cm-footer'></div></div></div><ul class='children'></ul></li>";
              }else{//二级评论的回复按钮要添加回复关闭锁属性
                newli = "<li comment_id='"+data.id+"'><div ><div><img class='head-pic' src='"+data.head_pic+"' alt=''></div><div class='children-cm'><div class='cm-header'><span>"+data.nickname+"</span><span>"+data.create_time+"</span></div><div class='cm-content'><p>"+data.content+"</p></div><div class='cm-footer'><a class='comment-reply' comment_id='"+data.id+"' href='javascript:void(0);' replyswitch='off' >回复</a></div></div></div><ul class='children'></ul></li>";
              }
              $("li[comment_id='"+data.parent_id+"']").children("ul").prepend(newli);
            }
          }else{
            //有错误信息
            alert(data.error);
          }
        }
      });
    }
  });
  //点击"回复"按钮显示或隐藏回复输入框
  $("body").delegate(".comment-reply","click",function(){
    if($(this).next().length>0){//判断出回复div已经存在,去除掉
      $(this).next().remove();
     }else{//添加回复div
      $(".comment-reply").next().remove();//删除已存在的所有回复div
      //添加当前回复div
      var parent_id = $(this).attr("comment_id");//要回复的评论id
      var divhtml = "";
      if('off'==$(this).attr("replyswitch")){//二级评论回复后三级评论不再提供回复功能,将关闭属性附加到"提交回复"按钮"
        divhtml = "<div class='div-reply-txt' style='width:98%;padding:3px;' replyid='2'><div><textarea class='txt-reply' replyid='2' style='width: 100%; height: 60px;'></textarea></div><div style='margin-top:5px;text-align:right;'><a class='comment-submit' parent_id='"+parent_id+"' style='font-size:14px;text-decoration:none;background-color:#63b8ff;' href='javascript:void(0);' replyswitch='off' >提交回复</a></div></div>";
      }else{
        divhtml = "<div class='div-reply-txt' style='width:98%;padding:3px;' replyid='2'><div><textarea class='txt-reply' replyid='2' style='width: 100%; height: 60px;'></textarea></div><div style='margin-top:5px;text-align:right;'><a class='comment-submit' parent_id='"+parent_id+"' style='font-size:14px;text-decoration:none;background-color:#63b8ff;' href='javascript:void(0);'>提交回复</a></div></div>";
      }
      $(this).after(divhtml);
     }
  });
})

页面样式代码:

.comment-filed{
  width:640px;
  margin:0 auto;
}
.comment-num{
  text-align: right;
  font-size:14px;
}
.div-txt-submit{
  text-align:right;
  margin-top:8px;
}
.comment-submit{
  background-color:#63b8ff;
  margin-top:15px;
  text-decoration:none;
  color:#fff;
  padding:5px;
  font-size:14px;
}
.txt-commit{
  border:1px solid blue;
  width:620px;
  height: 60px;
  padding: 10px;
}
.txt-reply{
  width: 100%;
  height: 60px;
}
.comment-filed-list{
  margin-top:20px;
}
.comment-list{
  margin-top:2px;
  width:herit;
  height:50px;
  border-top:1px solid gray;
}
.comment-ul{
  list-style:none;
  padding-left:0;
}
.head-pic{
  width:40px;
  height:40px;
}
.cm{
  position:relative;
  top:0px;
  left:40px;
  top:-40px;
  width:600px;
}
.cm-header{
  padding-left:5px;
}
.cm-content{
  padding-left:5px;
}
.cm-footer{
  padding-bottom:15px;
  text-align:right;
  border-bottom: 1px dotted #ccc;
}
.comment-reply{
  text-decoration:none;
  color:gray;
  font-size: 14px;
}
.children{
  list-style:none;
  background-color:#fafafa;
  padding-left:0;
  margin-left:40px;
}
.children-cm{
  position:relative;
  left:40px;
  top:-40px;
  width:90%;
}

页面布局代码:

<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd">
<html lang="en">
<head>
  <meta http-equiv="content-type" content="text/html;charset=utf-8">
  <title>php评论及回复功能</title>
  <link rel="stylesheet" type="text/css" href="/public/css/comment.css" rel="external nofollow" >
  <script type="text/javascript" src="/public/js/jquery-1.11.3.min.js" ></script>
  <script type="text/javascript" src="/public/js/comment.js" ></script>
</head>
<body>
<div class="comment-filed">
 <!--发表评论区begin-->
 <div>
  <div class="comment-num">
    <span>{$num}条评论</span>
  </div>
  <div>
    <div>
    <textarea class="txt-commit" replyid="0"></textarea>
    </div>
    <div class="div-txt-submit">
      <a class="comment-submit" parent_id="0" style="" href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span style=''>发表评论</span></a>
    </div>
  </div>
 </div>
 <!--发表评论区end-->
 <!--评论列表显示区begin-->
  <!-- {$commentlist} -->
  <div class="comment-filed-list" >
    <div><span>全部评论</span></div>
    <div class="comment-list" >
      <!--一级评论列表begin-->
      <ul class="comment-ul">
        <volist name="commlist" id="data">
          <li comment_id="{$data.id}">
          <div >
            <div>
              <img class="head-pic" src="{$data.head_pic}" alt="">
            </div>
            <div class="cm">
              <div class="cm-header">
              <span>{$data.nickname}</span>
              <span>{$data.create_time}</span>
              </div>
              <div class="cm-content">
                <p>
                  {$data.content}
                </p>
              </div>
              <div class="cm-footer">
                <a class="comment-reply" comment_id="{$data.id}" href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >回复</a>
              </div>
            </div>
          </div>
          <!--二级评论begin-->
          <ul class="children">
            <volist name="data.children" id="child" >
            <li comment_id="{$child.id}">
              <div >
                <div>
                  <img class="head-pic" src="{$child.head_pic}" alt="">
                </div>
                <div class="children-cm">
                  <div class="cm-header">
                  <span>{$child.nickname}</span>
                  <span>{$child.create_time}</span>
                  </div>
                  <div class="cm-content">
                    <p>
                      {$child.content}
                    </p>
                  </div>
                  <div class="cm-footer">
                    <a class="comment-reply" replyswitch="off" comment_id="{$child.id}" href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >回复</a>
                  </div>
                </div>
              </div>
              <!--三级评论begin-->
              <ul class="children">
                <volist name="child.children" id="grandson" >
                <li comment_id="{$grandson.id}">
                  <div >
                    <div>
                      <img class="head-pic" src="{$grandson.head_pic}" alt="">
                    </div>
                    <div class="children-cm">
                      <div class="cm-header">
                      <span>{$grandson.nickname}</span>
                      <span>{$grandson.create_time}</span>
                      </div>
                      <div class="cm-content">
                        <p>
                          {$grandson.content}
                        </p>
                      </div>
                      <div class="cm-footer">
                        <!-- <a class="comment-reply" comment_id="1" href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >回复</a> -->
                      </div>
                    </div>
                  </div>
                </li>
                </volist>
              </ul>
              <!--三级评论end-->
            </li>
            </volist>
          </ul>
          <!--二级评论end-->
        </li>
        </volist>
      </ul>
      <!--一级评论列表end-->
    </div>
  </div>
 <!--评论列表显示区end-->
</div>
</body>
</html>

sql语句:

drop table if exists `t_comment`;
create table `t_comment` (
 `id` int(11) not null auto_increment comment '主键id',
 `parent_id` int(11) not null comment '上级评论id,若是一级评论则为0',
 `nickname` varchar(100) default null comment '评论人昵称',
 `head_pic` varchar(400) default null comment '评论人头像',
 `content` text comment '评论内容',
 `create_time` datetime default null comment '评论或回复发表时间',
 primary key (`id`)
) engine=myisam auto_increment=148 default charset=utf8;

页面布局少一个jquery.js请自行加上。

更多关于thinkphp相关内容感兴趣的读者可查看本站专题:《thinkphp入门教程》、《thinkphp模板操作技巧总结》、《thinkphp常用方法总结》、《codeigniter入门教程》、《ci(codeigniter)框架进阶教程》、《zend framework框架入门教程》及《php模板技术总结》。

希望本文所述对大家基于thinkphp框架的php程序设计有所帮助。