在上一篇随笔中已经将如何发布动态呈现了,那么现在来看一下剩下的评论动态、回复评论、删除动态和评论功能,这几个功能会有点绕~~~
一、思路如下:
(1)你发表动态之后,会有人评论这一条动态,当评论之后,你也会回复该评论;(此处评论要单独一张表,回复也要单独一张表)
(2)删除动态:会将动态连同评论、回复全部删除;删除评论:只会删除该条评论
二、在写代码之前,我还是想把流程说一遍:
(1)发表动态---评论---回复---再回复
(2)将上边的流程细化,我先在纸上写出,再上传,码字不能表达清楚(注意的是,我想要的功能的实现,并不是一模一样的哈)
三、还是先将代码分块解释,最后将主页面代码完全附上(含上一篇)
在上一篇中已经实现发布动态、弹出评论框,那么现在接着向下走:
分别看一下qqfriends,qqdongtai,qqpinglun,qqhuifu表,这是初始状态:
先以用户李四登录,由数据库qqfriends表中知道,李四的好友是zhangsan, 和zhaoliu,那么他的空间中显示的好友动态如下:
与上一篇相比,在这一篇中,谁登录的我用中文显示的:
<""; if(empty($_SESSION["uid"])) { header("location:login.php"); exit; } $uid = $_SESSION["uid"]; require "../DB.class.php"; $db = new DB(); $sql = "select name from qqusers where uid='{$uid}'"; $name = $db->strquery($sql); echo "欢迎:"."<span class='qid' yh='{$uid}'>{$name}</span>"; "text-align: center">2、并将评论的内容写进数据库
//定义空字符串,容纳评论的id var code=""; $(".pl").click(function(){ code = $(this).attr("code"); //将评论的id重新赋值 }) //将评论写进数据库 $("#tjpl").click(function(){ var plnr = $(".pldt").val(); var plid = code; //取发动态的id $.ajax({ url:"pl-cl.php", data:{plnr:plnr,plid:plid}, type:"POST", dataType:"TEXT", success:function(data){ alert("评论成功!"); window.location.href="main.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ; } }); })pl-cl.php页面<br><br>
<"../DB.class.php"; $db = new DB(); session_start(); $uid = $_SESSION["uid"]; $plnr = $_POST["plnr"]; $dtid = $_POST["plid"]; $time = date("Y-m-d H:i:s", time()); $sql = "insert into qqpinglun values ('','{$dtid}','{$uid}','{$plnr}','{$time}')"; $db->query($sql,0); "text-align: center">3、读取评论内容:
<!--读取评论内容--> <div id="dqpl"> <"select * from qqpinglun"; $arr = $db->query($sql); foreach($arr as $v) { $sql = "select * from qqdongtai where dtid='{$v[1]}'"; $arr2 = $db->query($sql); foreach($arr2 as $m) { //取发动态的姓名 $sql = "select name from qqusers where uid='{$v[2]}'"; $name = $db->strquery($sql); //若果是登录者评论则显示“我” if($v[2]==$uid) { $name ="我"; } //获取被评论者的姓名 $sql = "select name from qqusers where uid=(select uid from qqdongtai where dtid='{$v[1]}')"; $bpl = $db->strquery($sql); echo "<div class='a'><span class='xm'>{$name}</span>评论<span class='xm'>{$bpl}</span>的动态:{$m[2]}<div> <div class='b'>{$v[3]}</div> <div class='c'>发表评论时间:{$v[4]}</div> <div class='d'><button class='btn btn-primary hf' ids ='{$v[0]}'>回复 </button><span><a href='scpl-cl.php"; } } "htmlcode">//定义空字符串,容纳回复评论的id var ids=""; $(".hf").click(function(){ ids = $(this).attr("ids"); //将评论的id重新赋值 // alert((ids)); $('#mM').modal('show'); }) //将回复评论写进数据库 $("#tjhf").click(function(){ var hfnr = $(".hfpl").val(); // alert(hfnr); // alert(ids); $.ajax({ url:"hf-cl.php", data:{hfnr:hfnr,ids:ids}, type:"POST", dataType:"TEXT", success:function(data){ alert("回复成功!"); window.location.href="main.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ; } }); })hf-cl.php页面
<"../DB.class.php"; $db = new DB(); session_start(); $uid = $_SESSION["uid"]; $hfnr = $_POST["hfnr"]; $cid = $_POST["ids"]; $time = date("Y-m-d H:i:s", time()); $sql = "insert into qqhuifu values ('','{$cid}','{$uid}','{$hfnr}','{$time}')"; $db->query($sql,0); "text-align: center">3、将回复内容读出:
<div id="dqhf"> <!--取一次回复--> <"select * from qqhuifu where cid in (select cid from qqpinglun)"; $arr = $db->query($sql); foreach($arr as $a) { $sql = "select * from qqpinglun where cid='{$a[1]}'"; $arr2 = $db->query($sql); foreach($arr2 as $n) { //取评论动态的姓名 $sql = "select name from qqusers where uid='{$a[2]}'"; $name = $db->strquery($sql); //若果是登录者评论则显示“我” if($a[2]==$uid) { $name ="我"; } //获取被回复评论的姓名 $sql = "select name from qqusers where uid=(select uid from qqpinglun where cid='{$a[1]}')"; $bpl = $db->strquery($sql); echo "<div class='a'><span class='xm'>{$name}</span>回复<span class='xm'>{$bpl}</span>的评论:{$n[3]}<div> <div class='b'>{$a[3]}</div> <div class='c'>回复时间:{$a[4]}</div> <div class='d'><button class='btn btn-primary hf' ids ='{$a[0]}'>回复 </button><span><a href='schf-cl.php"; } } "text-align: center">第三步:删除
1、删除动态:(含评论和回复)
scdt-cl.php
<"code"]; require "../DB.class.php"; $db = new DB(); $sql = "delete from qqdongtai where dtid='{$code}'"; $db->query($sql,0); $sql2 = "delete from qqpinglun where dtid='{$code}'"; $db->query($sql2,0); $sql3 = "delete from qqhuifu where cid=(select cid from qqpinglun where dtid='{$code}')"; $db->query($sql3,0); header("location:main.php"); "htmlcode"><"code"]; require "../DB.class.php"; $db = new DB(); $sql2 = "delete from qqpinglun where cid='{$code}'"; $db->query($sql2,0); $sql3 = "delete from qqhuifu where cid='{$code}'"; $db->query($sql3,0); header("location:main.php"); "htmlcode"><"code"]; require "../DB.class.php"; $db = new DB(); $sql2 = "delete from qqpinglun where cid='{$code}'"; $db->query($sql2,0); $sql3 = "delete from qqhuifu where cid='{$code}'"; $db->query($sql3,0); header("location:main.php"); "htmlcode"><!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <!--引入bootstrap的css文件--> <link type="text/css" rel="stylesheet" href="../bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="external nofollow" /> <!--引入js包--> <script src="/UploadFiles/2021-04-02/jquery-3.2.0.js">到此处为止,动态的发布、动态的评论、动态的回复、动态的删除都已经写完了,但是有个问题还还还没解决完,也就是回复的回复问题。请看下面的简图:
也就是回复表中有一部分是回复的评论,而剩余的部分则是回复的回复(有点绕)想看的就继续关注(下)未完待续~~~
先总结一下遇到的问题:
(1)为什么ajax输出的button添加不上点击事件?
因为ajax是异步ajax,所以要紧接其后。
(2)为什么取不到button的值------this
(3)一个php页面中,什么时候用ajax?什么时候用php?
在这个实例中,我用ajax将数据写进数据库;用php从数据库读取内容。(上一篇中,动态是用ajax读取的,在这一篇中,两种方法都有,详情请看全部代码)
(4)最后,逻辑清晰很关键,尤其是表与表之间的关联。
标签:php,qq空间,朋友圈发布动态
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