模仿qq空间或朋友圈发布动态、评论动态、回复评论、删除动态或评论的功能(上)
我们大部分人都发过动态,想必都知道发动态、回复评论、删除动态的整个过程,那么作为初学者,要模仿这些功能有点复杂的,最起码表的关系得弄清楚~~
先把思路理一下:
(1)用户登录,用session读取当前用户----目的是:该用户可以发表动态,重点是显示该用户好友及他自己发表的动态,并且按发表时间排序。
(2)做个发表动态框实现发表动态功能
(3)显示该用户和他好友已经发表对的动态信息,并按发表时间由近到远显示
(4)再每条动态后面做一个评论按钮和删除按钮;实现对动态的评论,回复和删除(斜体部分下一篇随笔,不然太长了)
需要用到的表:
(1)用户表:
(2)好友表
(3)动态表
我先将代码分块解析,最后将主页代码完整附上,不然弄不清逻辑可能会有点混~~~~
第一步:实现简单的登录
(1)login.php页面
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | <!DOCTYPE html> <html> <head> <meta charset= "UTF-8" > <title></title> <style> #body{ height: 300px; width: 300px; margin: 200px auto; } </style> </head> <body> <div id= "body" > <form method= "post" action= "login-cl.php" > 用户名:<input type= "text" name= "uid" /><br /><br /> 密码:<input type= "password" name= "pwd" /><br /> <input type= "submit" value= "登录" /> </form> </div> </body> </html> |
效果图如下:
(2)login-cl.php页面:(用session存取用户名)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | <?php session_start(); $uid = $_POST [ "uid" ]; $pwd = $_POST [ "pwd" ]; require "../DB.class.php" ; $db = new DB(); $sql = "select pwd from users where uid = '{$uid}'" ; $mm = $db ->strquery( $sql ); var_dump( $mm ); if ( $mm == $pwd && ! empty ( $pwd )) { $_SESSION [ "uid" ] = $uid ; header( "location:main.php" ); } else { echo "用户名或密码错误!" ; } ?> |
第二步:登录之后,布局发布动态框
(1)发布之前,判断一下session是否已经取到值,如果没有,返回到登陆页面,如果取到值则显示“欢迎,xx”的字体(后面的姓名均用拼音显示,不再读取汉字的姓名)
1 2 3 4 5 6 7 8 9 10 11 | <?php session_start(); $uid = "" ; if ( empty ( $_SESSION [ "uid" ])) { header( "location:login.php" ); exit ; } $uid = $_SESSION [ "uid" ]; echo "欢迎:" . "<span class='qid' yh='{$uid}'>{$uid}</span>" ; ?> |
(2)
1 2 3 4 5 6 7 | <!--写动态--> <div id= "xdt" > <p>发表动态:</p> <textarea cols= "100px" rows= "5px" name= "xdt" class = "xdt" ></textarea> <input type= "submit" value= "发表" id= "fb" /> </div> |
实现的效果:
第三步:显示该用户和他好友已经发表的动态信息,并按发表时间由近到远显示
重点是:
(1)显示的动态只是登陆的该用户和他好友的,非好友不显示--------所以在处理页面的sql语句要注意
(2)将读取出来的信息按照发表时间读取,发表时间最近的越在上边
首先:
1 2 3 4 5 6 | <!--容纳动态内容--> <div class = "fdt" > <p style= "color: brown; font-family: '微软雅黑';font-weight: bold;font-size: 20px; margin-bottom: 20px; margin-top: 20px;" >朋友动态:<p> <div id= "nr" ></div> </div> |
其次:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | //当发表动态时,将动态内容写进数据库,并刷新页面 $( "#fb" ).click( function (){ var dt= $( ".xdt" ).val(); var uid = $( ".qid" ).attr( "yh" ); $.ajax({ url: "main-cl.php" , data:{dt:dt}, type: "POST" , dataType: "TEXT" , success: function (data){ alert( "发表动态成功!" ); window.location.href= "main.php" ; } }); }) |
对应的main-cl.php页面:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | <?php session_start(); $uid = $_SESSION [ "uid" ]; $dt = $_POST [ "dt" ]; $date = date ( "Y-m-d H:i:s" ); require "../DB.class.php" ; $db = new DB(); $sql = "insert into qqdongtai values ('','{$uid}','{$dt}','{$date}')" ; $db ->query( $sql ,0); $sql = "select * from qqdongtai where uid='{$uid}' or uid in (select uid from qqfriends where fname =(select name from qqusers where uid='{$uid}'))" ; //echo $sql; $arr = $db ->strquery( $sql ); echo $arr ; ?> |
然后:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | //刷新页面时将内容读取出来,并按发表时间读出来 $.ajax({ url: "sx-cl.php" , dataType: "TEXT" , success: function (data){ var hang = data.trim().split( "|" ); var str= "" ; for ( var i=0;i<hang.length;i++) { var lie = hang[i].split( "^" ); str = str + "<div class='a'><span class='xm'>" +lie[1]+ "</span>发表动态:</div><div class='b'>" +lie[2]+ "</p><div class='c'>发表动态时间:" +lie[3]+ "</div>" ; str =str+ "<div id='d'><button class='btn btn-primary' data-toggle='modal' data-target='#myModal'>评论</button><span><a href='del.php?code=" +lie[0]+ "'>删除动态</a></span></div>" ; } $( "#nr" ).html(str); } }); |
sx-cl.php页面:
1 2 3 4 5 6 7 8 9 10 11 12 | <?php session_start(); $uid = $_SESSION [ "uid" ]; $date = date ( "Y-m-d H:i:s" ); require "../DB.class.php" ; $db = new DB(); //选取该用户和该用户好友的动态,并按时间顺训读出 $sql = "select * from qqdongtai where uid='{$uid}' or uid in (select uid from qqfriends where fname =(select name from qqusers where uid='{$uid}')) order by time desc" ; //echo $sql; $arr = $db ->strquery( $sql ); echo $arr ; ?> |
由上面可知:登录用户是lisi,由好友表可以知道,lisi的好友只有zhangsan和zhaoliu,那么显示的动态只能有lisi,zhangsan,和zhaoliu的。现在看一下效果及数据库~~~~
第四步:用bootstrap添加模态框用来评论动态
(1)引入文件:
1 2 3 4 5 6 | <!--引入bootstrap的css文件--> <link type= "text/css" rel= "stylesheet" href= "../bootstrap-3.3.7-dist/css/bootstrap.min.css" /> <!--引入js包--> <script src= "../jquery-3.2.0.js" ></script> <!--引入bootstrap的js文件--> <script src= "../bootstrap-3.3.7-dist/js/bootstrap.min.js" ></script> |
(2)用模态框做评论效果:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | <!-- 评论模态框(Modal) --> <div class = "modal fade" id= "myModal" tabindex= "-1" role= "dialog" aria-labelledby= "myModalLabel" aria-hidden= "true" > <div class = "modal-dialog" > <div class = "modal-content" > <div class = "modal-header" > <button type= "button" class = "close" data-dismiss= "modal" aria-hidden= "true" >×</button> <h4 class = "modal-title" id= "myModalLabel" >评论</h4> </div> <textarea class = "modal-body" cols= "80px" ></textarea> <div class = "modal-footer" > <button type= "button" class = "btn btn-default" data-dismiss= "modal" >关闭</button> <button type= "button" class = "btn btn-primary qdhf" >确定</button> </div> </div><!-- /.modal-content --> </div><!-- /.modal --> </div> |
实现效果:(样式比较简陋)
点击“评论”:
到这一步基本就能实现动态的发布和显示好友动态了~~~~未完待续----评论和评论回复见下一篇随笔~~~
主页面全部代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | <!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" /> <!--引入js包--> <script src= "../jquery-3.2.0.js" ></script> <!--引入bootstrap的js文件--> <script src= "../bootstrap-3.3.7-dist/js/bootstrap.min.js" ></script> <style> #body{ height: auto; width: 1000px; margin: 0px auto; } #xdt{ height: 200px; width:1000px; border: 1px solid royalblue; } .fdt{ position: relative; min-height:300px; width: 1000px; } /*谁发表动态样式*/ .a{ float: left; min-height:40px; width: 1000px; border-bottom: 2px solid brown; } .xm{ font-size: 18px; color: brown; font-weight: bold; } /*发表动态样式内容*/ .b{ float: left; text-align: left; height:100px; line-height: 50px; } /*发表时间与回复删除样式*/ .c{ height:30px; width: 800px; float: left; font-size: 12px; text-align:right; } #d{ height:30px; width: 200px; float: left; font-size: 15px; text-align:center; } </style> </head> <body> <div id= "body" > <?php session_start(); $uid = "" ; if ( empty ( $_SESSION [ "uid" ])) { header( "location:login.php" ); exit ; } $uid = $_SESSION [ "uid" ]; //这种方法可以取到uid。 echo "欢迎:" . "<span class='qid' yh='{$uid}'>{$uid}</span>" ; ?> <!--写动态--> <div id= "xdt" > <p>发表动态:</p> <!--<form method= "post" action= "main-cl.php" >--> <textarea cols= "100px" rows= "5px" name= "xdt" class = "xdt" ></textarea> <input type= "submit" value= "发表" id= "fb" /> <!--</form>--> </div> <!--容纳动态内容--> <div class = "fdt" > <p style= "color: brown; font-family: '微软雅黑';font-weight: bold;font-size: 20px; margin-bottom: 20px; margin-top: 20px;" >朋友动态:<p> <div id= "nr" ></div> </div> <!-- 评论模态框(Modal) --> <div class = "modal fade" id= "myModal" tabindex= "-1" role= "dialog" aria-labelledby= "myModalLabel" aria-hidden= "true" > <div class = "modal-dialog" > <div class = "modal-content" > <div class = "modal-header" > <button type= "button" class = "close" data-dismiss= "modal" aria-hidden= "true" >×</button> <h4 class = "modal-title" id= "myModalLabel" >评论</h4> </div> <textarea class = "modal-body" cols= "80px" ></textarea> <div class = "modal-footer" > <button type= "button" class = "btn btn-default" data-dismiss= "modal" >关闭</button> <button type= "button" class = "btn btn-primary qdhf" >提交评论</button> </div> </div><!-- /.modal-content --> </div><!-- /.modal --> </div> </div> </body> </html> <script> //刷新页面时将内容读取出来,并按发表时间读出来 $.ajax({ url: "sx-cl.php" , dataType: "TEXT" , success: function (data){ var hang = data.trim().split( "|" ); var str= "" ; for ( var i=0;i<hang.length;i++) { var lie = hang[i].split( "^" ); str = str + "<div class='a'><span class='xm'>" +lie[1]+ "</span>发表动态:</div><div class='b'>" +lie[2]+ "</p><div class='c'>发表动态时间:" +lie[3]+ "</div>" ; str =str+ "<div id='d'><button class='btn btn-primary' data-toggle='modal' data-target='#myModal'>评论</button><span><a href='del.php?code=" +lie[0]+ "'>删除动态</a></span></div>" ; } $( "#nr" ).html(str); //点击回复 } }); //当发表动态时,将动态内容写进数据库,并刷新页面 $( "#fb" ).click( function (){ var dt= $( ".xdt" ).val(); var uid = $( ".qid" ).attr( "yh" ); $.ajax({ url: "main-cl.php" , data:{dt:dt}, type: "POST" , dataType: "TEXT" , success: function (data){ alert( "发表动态成功!" ); window.location.href= "main.php" ; } }); }) </script> |
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