2017.6.8

上一篇随笔中已经提到如何新建流程，那么现在我们就来看一下如何发起一个流程和审核流程~~~

先说一下思路：

（1）登录用session获取到用户的id

(2) 用户发起一个流程

注意：需要写申请事由

（3）处于节点的审核人去依次审核

注意：每审核通过一个，对应towhere字段要加1；审核到最后时，对应的isok字段要变为1（此处1表示结束，0表示未结束）

共用到三张表：

第一步：先做一个简单的登录页面，用session获取用户名：

denglu.php页面

<!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页面

<?php
session_start();
require "../DB.class.php";
$db = new DB();
 
$uid = $_POST["uid"];
$pwd = $_POST["pwd"];
 
$sql = "select pwd from users where uid='{$uid}'";
$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";
}
?>

　　效果图：

第二步：做个简单的注页面：liucheng.php

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

效果图：

第三步：发起流程页面faqi.php

（1）先将所有流程用下拉列表显示

（2）发起流程事由需要由登录用户填写

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
            <style>
            #body{
                height: 250px;
                width: 300px;
                
                margin: 200px auto;
                text-align: left;
                vertical-align: middle;
                line-height: 30px;
                padding-left: 30px;
            }
        </style>
    </head>
    <body>
        <div id="body">
            <form method="post" action="faqi-cl.php">
            <h2>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 $v)
                    {
                        echo "<option value='{$v[0]}'>{$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>
        </div>
    </body>
</html>

第四步：写发起流程的处理页面fq-cl.php

<?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());
 
$sql = "insert into liuchengpath values ('','{$code}','{$uid}','{$nr}',0,'{$time}',0)";
$db->query($sql,0);
header("location:liucheng.php");
?>

　　点击“确认发起”，数据库中就会添加此条数据

第五步：流程审核页面shenhe.php

用到知识点：子查询：无关子查询（子查询和父查询可以独立执行）；相关子查询(子查询里的条件使用到了父查询的某个东西 )

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
            <style>
            #body{
                height: 450px;
                width: 800px;
                
                margin: 200px auto;
                text-align: left;
                vertical-align: middle;
                line-height: 30px;
                padding-left: 30px;
                 }
        </style>
    </head>
    <body>
        <div id="body">
            <h2>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
                $sql="select * from liuchengpath a where code in(select code from liuchengjiedian where uids='{$uid}') and towhere >=(select orders from liuchengjiedian b where b.code = a.code and b.uids = '{$uid}')";
 
                $arr = $db->query($sql);
                //var_dump($arr);
                echo "<table border='1' width='100%' cellpadding='0' cellspacing='0'>
                            <tr>
                                <td>流程代号</td>
                                <td>发起者</td>
                                <td>发起内容</td>
                                <td>发起时间</td>
                                <td>是否结束</td>
                                <td>操作</td>
                            </tr>";
                foreach($arr as $v){
                    //操作最后一列
                    //设置默认项
                    $zt = "<a href='tongguo-cl.php?code={$v[0]}'>审核未通过</a>";
                    $sql = "select orders from liuchengjiedian where code ='{$v[1]}' and uids ='{$uid}'";
                    $wz = $db->strquery($sql);
                    if($v[6]>$wz)
                    {
                        $zt = "<span style='color:green'>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>";             
                ?>
        </div>
    </body>
</html>

　　第六步：写tongguo-cl.php页面（重要）

<?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
$sql = "update liuchengpath set  towhere = towhere+1 where ids ='{$ids}' ";
$db->query($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
$sql =" select max(orders) from liuchengjiedian where code = (select code from liuchengpath where ids ='{$ids}')";
$maxorders = $db->strquery($sql);
 
//获取该用户处于哪个位置，也就是towhere等于多少
$sql ="select towhere from liuchengpath where ids ='{$ids}'";
$towhere = $db->strquery($sql);
 
//判断是否已到达最后一个审核的人
if($towhere>$maxorders)
{
    $sql = "update liuchengpath set isok=1 where ids='{$ids}'";
//  var_dump($sql);
    $db->query($sql,0);
}
header("location:shenhe.php");
?>