php+AJAX新建流程
1:需要明确需要操作哪些流程?
2:每一个流程需要那些人员来执行?
3:执行该流程人员的顺序是什么?
一. 数据库建需要用到的三张表,分别是:users表;liucheng表;flowpath表(表中已显示所做的数据)
二. 新建流程的页面
(1)用下拉列表显示人员的名单并且加一个添加按钮
<h1>新建流程</h1>
<div>
请选择节点人员:
<select id="user">
<?php
session_start();
require"../DBDA.class.php";
$db = new DBDA();
$sql = "select * from users";
$arr = $db->query($sql,1);
foreach($arr as $v)
{
echo"<option value='{$v[0]}'>{$v[2]}</option>"; //输出单选按钮,数组中的索引2,也就是用户名,但是它的值是代号
}
?>
</select>
<input type="button" value="添加节点" id="addjd" />
</div>
<br />
(2)对添加节点按钮添加点击事件
$("#addjd").click(function(){
var uid = $("#user").val();
$.ajax({
url:"add.php",
data:{uid:uid},
type:"POST",
dataType:"TEXT",
success: function(data){
window.location.href="xinjian.php";//执行处理页面成功后会刷新页面
}
})
})
(3)添加节点的处理页面 add.php
<?php session_start(); $uid = $_POST["uid"];//接收传过来的值
if(empty($_SESSION["jiedian"])) { $arr = array($uid);//定义一个数组放用户
$_SESSION["jiedian"] = $arr;//将第一个用户放入数组中
} else { $arr = $_SESSION["jiedian"];//数组中有值
$arr[] = $uid;//放入数组中值
$_SESSION["jiedian"] = $arr;//将值再交给session
}
(4)在新建流程页面中显示添加的节点
<div> <?php if(empty($_SESSION["jiedian"])) { echo"还未添加节点人员!"; } else { $arr = $_SESSION["jiedian"]; foreach($arr as $k=>$v) { $sql ="select name from users where uid='{$v}'"; $name =$db->strquery($sql); echo"<div>{$k}--{$name}--<input type='button' value='移除' class='yichu' sy='{$k}'/></div>"; } } ?> </div> <br />
完成到这一步以后,效果如下:
(5)给移除按钮添加单击事件
$(".yichu").click(function(){ var sy = $(this).attr("sy");//点击这个按钮,选中这个的索引号
$.ajax({ url:"yichu.php", data:{sy:sy}, type:"POST", dataType:"TEXT", success: function(data){ window.location.href="xinjian.php";//执行处理页面成功后会刷新页面
} }); })
(6)移除处理页面 yichu.php
<?php session_start(); $sy =$_POST["sy"];
//接收穿过来的索引号
$arr = $_SESSION["jiedian"];//节点的数组
unset($arr[$sy]);//删除数据
$arr = array_values($arr);//重新索引
$_SESSION["jiedian"] = $arr;
(7)节点的问题解决以后,那么就是流程的名称了,写名称的文本框:重要的就是对此流程的保存,那么就要有保存按钮
<div> 请输入流程名称:<input type="text" id="mingcheng" /> </div> <br /> <input type="button" value="保存" id="baocun" />
(8)给保存按钮的添加单击事件
$("#baocun").click(function(){ var name = $("#mingcheng").val(); $.ajax({ url:"baocun.php", data:{name:name}, type:"POST", dataType:"TEXT", success: function(data){ alert("保存成功!"); } }); })
(9)最后是保存流程的处理页面
<?php session_start(); require "../DBDA.class.php"; $db = new DBDA(); $name = $_POST["name"]; $code = time(); $sql ="insert into liucheng values('{$code}','{$name}')"; $db->query($sql); $arr = $_SESSION["jiedian"]; foreach($arr as $k=>$v) { $sql ="insert into flowpath values('','{$code}','{$v}',{$k})"; //注意建表的类型,这里的orders项用的是int型,所以{$k}不用加'',而且建表主键要勾选自增长 $db->query($sql); }
当然内容也相应的保存在了数据库中,效果见最上面的数据表
下面代码用来copy用:
1.xinjian.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <script src="../jquery-3.2.0.min.js"></script> </head> <body> <h1>新建流程</h1> <div> 请选择节点人员: <select id="user"> <?php session_start(); require"../DBDA.class.php"; $db = new DBDA(); $sql = "select * from users"; $arr = $db->query($sql,1); foreach($arr as $v) { echo"<option value='{$v[0]}'>{$v[2]}</option>"; } ?> </select> <input type="button" value="添加节点" id="addjd" /> </div> <br /> <div> <?php if(empty($_SESSION["jiedian"])) { echo"还未添加节点人员!"; } else { $arr = $_SESSION["jiedian"]; foreach($arr as $k=>$v) { $sql ="select name from users where uid='{$v}'"; $name =$db->strquery($sql); echo"<div>{$k}--{$name}--<input type='button' value='移除' class='yichu' sy='{$k}'/></div>"; } } ?> </div> <br /> <div> 请输入流程名称:<input type="text" id="mingcheng" /> </div> <br /> <input type="button" value="保存" id="baocun" /> </body> <script type="text/javascript"> $("#addjd").click(function(){ var uid = $("#user").val(); $.ajax({ url:"add.php", data:{uid:uid}, type:"POST", dataType:"TEXT", success: function(data){ window.location.href="xinjian.php"; } }) }) $(".yichu").click(function(){ var sy = $(this).attr("sy"); $.ajax({ url:"yichu.php", data:{sy:sy}, type:"POST", dataType:"TEXT", success: function(data){ window.location.href="xinjian.php"; } }); }) $("#baocun").click(function(){ var name = $("#mingcheng").val(); $.ajax({ url:"baocun.php", data:{name:name}, type:"POST", dataType:"TEXT", success: function(data){ alert("保存成功!"); } }); }) </script> </html>
2.add.php
<?php session_start(); $uid = $_POST["uid"]; if(empty($_SESSION["jiedian"])) { $arr = array($uid); $_SESSION["jiedian"] = $arr; } else { $arr = $_SESSION["jiedian"]; $arr[] = $uid; $_SESSION["jiedian"] = $arr; }
3.yichu.php
<?php session_start(); $sy =$_POST["sy"]; $arr = $_SESSION["jiedian"]; unset($arr[$sy]); $arr = array_values($arr); $_SESSION["jiedian"] = $arr;
4.baocun.php
<?php session_start(); require "../DBDA.class.php"; $db = new DBDA(); $name = $_POST["name"]; $code = time(); $sql ="insert into liucheng values('{$code}','{$name}')"; $db->query($sql); $arr = $_SESSION["jiedian"]; foreach($arr as $k=>$v) { $sql ="insert into flowpath values('','{$code}','{$v}',{$k})"; $db->query($sql); }
//输出单选按钮,数组中的索引2,也就是用户名,但是它的值是代号