thinkPHP实现基于ajax的评论回复功能_php实例_

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; } } 

 $(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 = "
"+data.nickname+""+data.create_time+"
"+data.content+"
回复
"; $(".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 = "
"+data.nickname+""+data.create_time+"
"+data.content+"
"; }else{//二级评论的回复按钮要添加回复关闭锁属性 newli = "
"+data.nickname+""+data.create_time+"
"+data.content+"
回复
"; } $("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 = "
提交回复
"; }else{ divhtml = "
提交回复
"; } $(this).after(divhtml); } }); }) 

 .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%; } 

{$num}条评论
发表评论
全部评论
{$data.nickname}{$data.create_time}
 {$data.content} 
回复
{$child.nickname}{$child.create_time}
 {$child.content} 
回复
{$grandson.nickname}{$grandson.create_time}
 {$grandson.content} 

 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;