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PHP+ajax tutorial on initiating and reviewing leave request process

巴扎黑

Aug 08, 2017 pm 02:06 PM

phpphp+ajaxprocess

This article mainly introduces the php+ajax initiation process and review process (taking leave as an example). Friends who need it can refer to it

The previous essay has mentioned how to create a new process, so now Let’s take a look at how to initiate a process and review process~~~

Let’s talk about the idea first:

(1) Log in with session Obtain the user's id

(2) The user initiates a process

Note: You need to write the application reason

(3) The reviewer at the node will review it in sequence

Three tables:

Step 1: Make a simple login page first, and use session to get the user name:

denglu.php page

<!DOCTYPE html>
<html>
 <head>
 <meta charset="UTF-8">
 <title></title>
 </head>
 <body>
 <form method="post" action="denglu-cl.php">
  用户名：<input type="text" name="uid" /><br />
  密码：<input type="password" name="pwd" /><br />
  <input type="submit" value="登录" />
 </form>
 </body>
</html>

denglu-cl.php page

<?php
session_start();
require "../DB.class.php";
$db = new DB();
$uid = $_POST["uid"];
$pwd = $_POST["pwd"];
$sql = "select pwd from users where uid=&#39;{$uid}&#39;";
$mm = $db->strquery($sql);
if($pwd==$mm && !empty($pwd))
{
 $_SESSION["uid"]=$uid;
 header("location:liucheng.php");
}
else
{
 echo "密码或登录名输入错误";
}
?>

Rendering:

Step 2: Make a simple note page: liucheng.php

<!DOCTYPE html>
<html>
 <head>
 <meta charset="UTF-8">
 <title></title>
 <style>
  #body{
  height: 200px;
  width: 300px;
  background-color: gainsboro;
  margin: 200px auto;
  text-align: center;
  vertical-align: middle;
  line-height: 30px;
  }
 </style>
 </head>
 <body>
 <p id="body">
 <h2 id="主页面">主页面</h2>
 <p>
  <a href="faqi.php" rel="external nofollow" >发起流程</a><br />
  <a href=&#39;shenhe.php&#39;>审核流程</a>
 </p>
 </p>
 </body>
</html>

Rendering:

Step 3: Initiate process page faqi.php

(1) First display all processes in a drop-down list

(2) The reason for initiating the process needs to be filled in by the logged in user

<!DOCTYPE html>
<html>
 <head>
 <meta charset="UTF-8">
 <title></title>
  <style>
  #body{
  height: 250px;
  width: 300px;
  background-color: gainsboro;
  margin: 200px auto;
  text-align: left;
  vertical-align: middle;
  line-height: 30px;
  padding-left: 30px;
  }
 </style>
 </head>
 <body>
 <p id="body">
  <form method="post" action="faqi-cl.php">
  <h2 id="发起流程页面">发起流程页面</h2>
  <select id="lc">
  <?php
   require "../DB.class.php";
   $db = new DB();
   $sql = "select * from liucheng";
   $arr = $db->query($sql);
   foreach($arr as $v)
   {
   echo "<option value=&#39;{$v[0]}&#39;>{$v[1]}</option>"; 
   }   
  ?>
  </select><br />
  发起流程事由：
  <textarea class="nr"> </textarea><br />
  <input type="button" value="确定发起" /> 
  </form>
 </p>
 </body>
</html>

Step 4: Write the processing page fq-cl.php to initiate the process

<?php
session_start();
require "../DB.class.php";
$db = new DB();
$code = $_POST["lc"];
$nr =$_POST["nr"];
$uid = $_SESSION["uid"];
$time = date("Y-m-d H:i:s",time());
$sql = "insert into liuchengpath values (&#39;&#39;,&#39;{$code}&#39;,&#39;{$uid}&#39;,&#39;{$nr}&#39;,0,&#39;{$time}&#39;,0)";
$db->query($sql,0);
header("location:liucheng.php");
?>

Click "Confirm Initiation" and this data will be added to the database

Step 5: Process review page shenhe.php

Knowledge points used : Subquery: irrelevant subquery (subquery and parent query can be executed independently); related subquery (conditions in the subquery use something from the parent query )

<!DOCTYPE html>
<html>
 <head>
 <meta charset="UTF-8">
 <title></title>
  <style>
  #body{
  height: 450px;
  width: 800px;
  background-color: gainsboro;
  margin: 200px auto;
  text-align: left;
  vertical-align: middle;
  line-height: 30px;
  padding-left: 30px;
   }
 </style>
 </head>
 <body>
 <p id="body">
  <h2 id="流程审核页面">流程审核页面</h2>
  <?php
  session_start();
  $uid = $_SESSION["uid"];
  require "../DB.class.php";
  $db = new DB();
  //先取该用户参与的所有流程
  //并且取流程步骤到达该用户或已经被改用户审核通过的记录
  $sql="select * from liuchengpath a where code in(select code from liuchengjiedian where uids=&#39;{$uid}&#39;) and towhere >=(select orders from liuchengjiedian b where b.code = a.code and b.uids = &#39;{$uid}&#39;)";
  $arr = $db->query($sql);
  //var_dump($arr);
  echo "<table border=&#39;1&#39; width=&#39;100%&#39; cellpadding=&#39;0&#39; cellspacing=&#39;0&#39;>
    <tr>
    <td>流程代号</td>
    <td>发起者</td>
    <td>发起内容</td>
    <td>发起时间</td>
    <td>是否结束</td>
    <td>操作</td>
    </tr>";
  foreach($arr as $v){
   //操作最后一列
   //设置默认项
   $zt = "<a href=&#39;tongguo-cl.php?code={$v[0]}&#39;>审核未通过</a>";
   $sql = "select orders from liuchengjiedian where code =&#39;{$v[1]}&#39; and uids =&#39;{$uid}&#39;";
   $wz = $db->strquery($sql);
   if($v[6]>$wz)
   {
   $zt = "<span style=&#39;color:green&#39;>审核已通过</span>";
   }
   echo "<tr>
    <td>{$v[1]}</td>
    <td>{$v[2]}</td>
    <td>{$v[3]}</td>
    <td>{$v[4]}</td>
    <td>{$v[5]}</td>
    <td>{$zt}</td>
   </tr>";   
  }
  echo "</table>";  
  ?>
 </p>
 </body>
</html>

Step 6: Write tongguo-cl.php page (important)

<?php
$ids = $_GET["code"];
require "../DB.class.php";
$db = new DB();
//点击审核后，towhere列加1，目的是使流程向下走
$sql = "update liuchengpath set towhere = towhere+1 where ids =&#39;{$ids}&#39; ";
$db->query($sql,0);
//当流程走到最后一个审核的人时，流程要结束
//获取该流程最大的orders
$sql =" select max(orders) from liuchengjiedian where code = (select code from liuchengpath where ids =&#39;{$ids}&#39;)";
$maxorders = $db->strquery($sql);
//获取该用户处于哪个位置，也就是towhere等于多少
$sql ="select towhere from liuchengpath where ids =&#39;{$ids}&#39;";
$towhere = $db->strquery($sql);
//判断是否已到达最后一个审核的人
if($towhere>$maxorders)
{
 $sql = "update liuchengpath set isok=1 where ids=&#39;{$ids}&#39;";
// var_dump($sql);
 $db->query($sql,0);
}
header("location:shenhe.php");
?>

When you have finished writing this step, click "Audit failed" and it will become " The review has been passed";

Let's verify the effect from the beginning:

First: initiate a new leave process:

Secondly: zhangsan is the first person to be reviewed

Click "After the review failed ",

Finally: zhaoliu is the last reviewer

##Click After "Audit failed", whether the end changes to 1; the operation changes to green "Audit passed"~~~

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