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12月6号作业 MVC小案例
遗忘了寂寞
Original
550 people have browsed it

文件目录

controller/StaffsController.php

  1. <?php
  2. // 控制器
  3. class StaffsController
  4. {
  5.     //获取全部数据
  6.     public function listAll()
  7.     {
  8.         //实例化模型，获取数据
  9.         $sta = new StaffsModel();
  10.         $data = $sta->getAll();
  11.         require 'view/StaffslistAll.php';
  12.     }
  13.     //获取单条数据
  14.     public function info($id=1)
  15.     {
  16.         $id = isset($_GET['id']) ? $_GET['id'] : $id;
  17.         $sta = new StaffsModel();
  18.         $data = $sta->get($id);
  19.         require 'view/Staffslistinfo.php';
  21.     }
  22. }

model/db.php

  1. <?php
  3. //数据库的基本操作
  4. class Db
  5. {
  6.     //数据库的基本参数
  7.     private $dbConfig=[
  8.         'type' => 'mysql',            //数据库类型
  9.         'host' => 'localhost',        //服务器地址
  10.         'dbname' => 'tj_ys',        //数据库名称
  11.         'username' => 'root',        //用户名
  12.         'password' => '123123'        //密码
  13.     ];
  14.     //单例模式，保存本类实例
  15.     private static $instance = null;
  16.     //保存数据库连接实例
  17.     private static $conn = null;
  18.     //新增ID
  19.     public $insertID = null;
  20.     //受影响的数量
  21.     public $num = 0;
  22.     //构造方法私有化，
  23.     private function __construct($params)
  24.     {
  25.         //初始化连接参数
  26.         $this->dbConfig = array_merge($this->dbConfig,$params);
  28.         //连接数据库
  29.         $this->connect();
  30.     }
  31.     //克隆方法私有化，
  32.     private function __clone()
  33.     {
  35.     }
  36.     //获取当前类的单一实例
  37.     public static function getInstance($params=[])
  38.     {
  39.         if(!self::$instance instanceof self){
  40.             self::$instance=new self($params);
  41.         }
  42.         return self::$instance;
  43.     }
  44.     //数据库连接
  45.     private function connect()
  46.     {
  48.         try {
  49.             //连接参数
  50.             $dsn = "{$this->dbConfig['type']}:host={$this->dbConfig['host']};dbname={$this->dbConfig['dbname']}";
  51.             //数据库连接
  52.             $this->conn = new PDO($dsn, $this->dbConfig['username'], $this->dbConfig['password']);
  55.         } catch (PDOException $e) {
  56.             die('连接失败' . $e->getMessage());
  57.         }
  58.     }
  59.     //数据表的写操作，新增、更新、删除
  60.     //返回受影响的记录数，如果是新增返回新增ID
  61.     public function exec($sql)
  62.     {
  63.         $num = $this->conn->exec($sql);
  64.         if ($num > 0){
  65.             // 如果是新增返回新增ID
  66.             if ($this->conn->lastInsertId() !== null){
  67.                 $insertID = $this->conn->lastInsertId();
  68.             }
  69.             $this->num = $num;    //返回受影响的数量
  70.         }else{
  71.             $error = $htis->conn->errorInfo();    //获取最后操作的错误信息的数组
  72.             //[0]:错误标识符；[1]:错误代码；[2]:错误信息
  73.             print '操作失败' . $error[0] . ': ' . $error[1] . ': ' . $error[2];
  74.         }
  75.     }
  76.     //查询操作：获取单条数据
  77.     public function fetch($sql)
  78.     {
  79.         return $this->conn->query($sql)->fetch(PDO::FETCH_ASSOC);
  80.     }
  82.     //查询操作：获取多条数据
  83.     public function fetchAll($sql)
  84.     {
  85.         return $this->conn->query($sql)->fetchAll(PDO::FETCH_ASSOC);
  86.     }
  89. }

model/Model.php

  1. <?php
  3. //公共模型
  4. class Model
  5. {
  6.     protected $db = null;    //数据库连接对象
  7.     public $data = null;    //当前数据内容
  9.     public function __construct()
  10.     {
  11.         $this->init(); //完成数据连接
  12.     }
  14.     private function init()
  15.     {
  16.         $dbConfig=[
  17.             'dbname' => 'tj_ys',        //数据库名称
  18.             'username' => 'root',        //用户名
  19.             'password' => '123123'
  20.         ];
  21.         $this->db = Db::getInstance($dbConfig);
  22.     }
  24.     //获取全部数据
  25.     public function getAll()
  26.     {
  27.         $sql="SELECT * FROM staffs";
  28.         return $this->data = $this->db->fetchAll($sql);
  29.     }
  30.     //获取全部数据
  31.     public function get($id)
  32.     {
  33.         $sql="SELECT * FROM staffs WHERE id = {$id}";
  34.         return $this->data = $this->db->fetch($sql);
  35.     }
  38. }

model/StaffsModel.php

  1. <?php
  2. // 用户自定义模型
  3. class StaffsModel extends Model
  4. {
  6. }

view/StaffslistAll.php

  1. <!DOCTYPE html>
  2. <html lang="zh">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6.     <meta http-equiv="X-UA-Compatible" content="ie=edge">
  7.     <title></title>
  8.     <style>
  9.     table {border-collapse: collapse; border: 1px solid; width: 500px;height: 150px}
  10.     caption {font-size: 1.2rem; margin-bottom: 10px;}
  11.     tr:first-of-type { background-color:lightblue;}
  12.     td,th {border: 1px solid}
  13.     td:first-of-type {text-align: center}
  14.     </style>
  15. </head>
  16. <body>
  18.     <table>
  19.         <caption><h2>人物信息表</h2></caption>
  20.         <tr>
  21.             <th>ID</th>
  22.             <th>姓名</th>
  23.             <th>职位</th>
  24.             <th>操作</th>
  25.         </tr>
  26.         <?php foreach($data as $data_sta): ?>
  28.         <tr>
  29.             <td><?php echo $data_sta['id']; ?></td>
  30.             <td><?php echo $data_sta['name']; ?></td>
  31.             <td><?php echo $data_sta['position']; ?></td>
  32.             <td><a href="index.php?a=info&id=<?php echo $data_sta['id']; ?>">查看详情</a></td>
  33.         </tr>
  34.         <?php endforeach;  ?>
  36.     </table>
  37.     总计：<?php echo count($data); ?>条记录
  38. </body>
  39. </html>

view/Staffslistinfo.php

  1. <!DOCTYPE html>
  2. <html lang="zh">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6.     <meta http-equiv="X-UA-Compatible" content="ie=edge">
  7.     <title></title>
  8.     <style>
  9.     table {border-collapse: collapse; border: 1px solid; width: 500px;height: 150px}
  10.     caption {font-size: 1.2rem; margin-bottom: 10px;}
  12.     td,th {border: 1px solid}
  13.     td:first-of-type {text-align: center}
  14.     </style>
  15. </head>
  16. <body>
  18.     <table>
  19.         <caption><h2><?php echo $data['name']; ?>个人信息表</h2></caption>
  20.         <tr>
  21.             <th>ID</th>
  22.             <th><?php echo $data['id']; ?></th>
  24.         </tr>
  25.         <tr>
  26.             <th>姓名</th>
  27.             <th><?php echo $data['name']; ?></th>
  29.         </tr>
  30.         <tr>
  31.             <th>年龄</th>
  32.             <th><?php echo $data['age']; ?></th>
  34.         </tr>
  35.         <tr>
  36.             <th>性别</th>
  37.             <th><?php echo $data['sex']; ?></th>
  39.         </tr>
  40.         <tr>
  41.             <th>职位</th>
  42.             <th><?php echo $data['position']; ?></th>
  44.         </tr>
  45.     </table>
  46.     <a href="index.php?a=listAll">显示全部信息</a>
  47. </body>
  48. </html>

index.php

  1. <?php
  2. //入口文件
  3. //加载模型类
  4. require 'model/db.php';
  5. require 'model/Model.php';
  6. require 'model/StaffsModel.php';
  7. //获取控制器名称
  8. $controller = isset($_GET['c']) ? $_GET['c'] : 'Staffs';
  9. //控制器加后缀
  10. $controller .='Controller';
  11. //加载控制器类
  12. require 'controller/' . $controller . '.php';
  14. // 获取方法
  15. $action =  isset($_GET['a']) ? $_GET['a'] : 'listAll';
  17. $Sta = new $controller();
  18. $Sta->$action();

运行图

Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：有没有想过, 给这张表添加上编辑, 删除, 添加功能, 让它看上去更像是一个员工管理系统
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