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博客列表 >12月6日—MVC框架

12月6日—MVC框架

曾龙宇
曾龙宇原创
2019年12月11日 20:05:41762浏览

Controller

  1. <?php
  2. use model\BookModel;
  4. class BookController{
  5.     public function listAll(){
  6.         $book = new BookModel();
  7.         $data = $book->getAll();
  8.         require 'view/list.php';
  9.     }
  10.     public function info($id=1){
  11.         $id = isset($_GET['id'])?$_GET['id']:$id;
  12.         $book = new BookModel();
  13.         $data = $book->info($id);
  14.         require 'view/info.php';
  15.     }
  16.     public function add(){
  17.         require 'view/add.php';
  18.     }
  19.     public function save(){
  20.         if ($_POST['id']){
  21.             $id = intval($_POST['id']);
  22.             $data['book_name'] = trim($_POST['book_name']);
  23.             $data['category'] = trim($_POST['category']);
  24.             $data['price'] = trim($_POST['price']);
  25.             $data['num'] = trim($_POST['num']);
  26.             $data['status'] = trim($_POST['status']);
  27.             $book = new BookModel();
  28.             $data = $book->update($data,$id);
  29.             if ($data>0){
  30.                 echo '<script>alert("编辑保存成功");location.assign("?a=listAll")</script>';
  31.             }
  32.         }else{
  33.             $data['book_name'] = trim($_POST['book_name']);
  34.             $data['category'] = trim($_POST['category']);
  35.             $data['price'] = trim($_POST['price']);
  36.             $data['num'] = trim($_POST['num']);
  37.             $data['status'] = trim($_POST['status']);
  38.             $book = new BookModel();
  39.             $data = $book->insert($data);
  40.             if ($data>0){
  41.                 echo '<script>alert("新增保存成功");location.assign("?a=listAll")</script>';
  42.             }
  43.         }
  45.     }
  46. }

Db类

  1. <?php
  2. namespace model;
  3. class Db{
  4.     //数据库默认参数
  5.     private $dbConfig = [
  6.         'db'=>'mysql',
  7.         'host'=>'localhost',
  8.         'port'=>'3306',
  9.         'user'=>'root',
  10.         'pwd'=>'root',
  11.         'charset'=>'utf8',
  12.         'dbname'=>'demo'
  13.     ];
  14.     //使用单例模式
  15.     private static $instance = null;
  16.     private $conn = null;
  17.     public $num = 0;
  18.     public $insertId = null;
  19.     //构造方法私有化
  20.     private function __construct($params){
  21.         $this->dbConfig = array_merge($this->dbConfig,$params);
  22.         //连接数据库
  23.         $this->connect();
  24.     }
  25.     //克隆方法私有化
  26.     private function __clone(){
  27.         // TODO: Implement __clone() method.
  28.     }
  29.     //自定义类实例化对象
  30.     public static function getInstance($params=[]){
  31.         if(!self::$instance instanceof self){
  32.             self::$instance = new self($params);
  33.         }
  34.         return self::$instance;
  35.     }
  36.     private function connect(){
  37.         try{
  38.             $dsn = "{$this->dbConfig['db']}:host={$this->dbConfig['host']};port={$this->dbConfig['port']};dbname={$this->dbConfig['dbname']}";
  39.             $this->conn = new \PDO($dsn,$this->dbConfig['user'],$this->dbConfig['pwd']);
  40.             $this->conn->query("SET NAMES {$this->dbConfig['charset']}");
  41.         }catch(\PDOException $e){
  42.             die('数据库连接失败'.$e->getMessage());
  43.         }
  44.     }
  45.     public function exec($sql){
  46.         //受影响的行数
  47.         $num = $this->conn->exec($sql);
  48.         if ($num>0){
  49.             if (null!==$this->conn->lastInsertId()){
  50.                 $this->insertId = $this->conn->lastInsertId();
  51.             }
  52.             return $num;
  53.         }else{
  54.             $error = $this->conn->errorInfo();
  55.             print '操作失败'.$error[0].':'.$error[1].':'.$error[2];
  56.         }
  57.     }
  58.     public function fetch($sql){
  59.         return $this->conn->query($sql)->fetch(\PDO::FETCH_ASSOC);
  60.     }
  61.     public function fetchAll($sql){
  62.         return $this->conn->query($sql)->fetchAll(\PDO::FETCH_ASSOC);
  63.     }
  64. }

Model类

  1. <?php
  2. namespace model;
  3. class Model{
  4.     protected $db = null;
  5.     public $data = null;
  6.     public function __construct(){
  7.         $this->init();
  8.     }
  9.     private function init(){
  10.         $dbConfig = [
  11.             'user'=>'root',
  12.             'pwd'=>'root',
  13.             'dbname'=>'demo',
  14.         ];
  15.         $this->db = Db::getInstance($dbConfig);
  16.     }
  17.     public function getAll(){
  18.         $sql = "SELECT * FROM db_book";
  19.         return $this->data = $this->db->fetchAll($sql);
  20.     }
  21.     public function info($id){
  22.         $sql = "SELECT * FROM db_book WHERE id={$id}";
  23.         return $this->data = $this->db->fetch($sql);
  24.     }
  25.     public function update($data,$id){
  26.         $sql = "UPDATE db_book SET ";
  27.         if (is_array($data)){
  28.             foreach ($data as $k=>$v){
  29.                 $sql .= $k.'="'.$v.'", ';
  30.             }
  31.         }
  32.         $sql = rtrim(trim($sql),',');
  33.         $sql .= " WHERE id={$id}";
  34.         return $this->data = $this->db->exec($sql);
  35.     }
  36.     public function insert($data){
  37.         $sql = "INSERT db_book SET ";
  38.         if (is_array($data)){
  39.             foreach ($data as $k=>$v){
  40.                 $sql .= $k.'="'.$v.'", ';
  41.             }
  42.         }
  43.         $sql = rtrim(trim($sql),',');
  44.         return $this->data = $this->db->exec($sql);
  45.     }
  46. }

View-add

  1. <!doctype html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>图书信息</title>
  6. </head>
  7. <body>
  8. <h2 align="center">图书添加</h2>
  9. <form action="?a=save" method="post">
  10.     <table border="1" cellpadding="5" cellspacing="0" align="center" width="50%">
  12.         <tr>
  13.             <th>图书名称</th>
  14.             <td><input type="text" name="book_name" value=""></td>
  15.         </tr>
  16.         <tr>
  17.             <th>图书类别</th>
  18.             <td>
  19.                 <select name="category" id="">
  20.                     <option value="">请选择</option>
  21.                     <option value="1">小说</option>
  22.                     <option value="2">工具书</option>
  23.                     <option value="3">历史</option>
  24.                 </select>
  25.             </td>
  26.         </tr>
  27.         <tr>
  28.             <th>价格</th>
  29.             <td><input type="text" name="price" value=""></td>
  30.         </tr>
  31.         <tr>
  32.             <th>存库数量</th>
  33.             <td><input type="number" name="num" value=""></td>
  34.         </tr>
  35.         <tr>
  36.             <th>状态</th>
  37.             <td>
  38.                 <input type="radio" name="status" value="0" checked>启用
  39.                 <input type="radio" name="status" value="1">禁用
  40.             </td>
  41.         </tr>
  42.         <tr>
  43.             <td colspan="2" align="center">
  44.                 <button>保存</button>
  45.                 <button type="reset">重置</button>
  46.             </td>
  47.         </tr>
  48.     </table>
  49. </form>
  50. </body>
  51. </html>

View-list

  1. <!doctype html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>图书信息</title>
  6.     <style>
  7.     </style>
  8. </head>
  9. <body>
  10. <div>
  11.     <h2 align="center">图书信息表</h2>
  12. <table border="1" cellpadding="3" cellspacing="0" align="center" width="70%">
  13.     <tr bgcolor="#add8e6">
  14.         <th>ID</th>
  15.         <th>图书名称</th>
  16.         <th>图书类别</th>
  17.         <th>价格</th>
  18.         <th>存库数量</th>
  19.         <th>状态</th>
  20.         <th>操作</th>
  21.     </tr>
  22.     <?php foreach($data as $book):?>
  23.     <tr align="center">
  24.         <td><?php echo $book['id'];?></td>
  25.         <td><?php echo $book['book_name'];?></td>
  26.         <td>
  27.                 <?php
  28.                     switch ($book['category']) {
  29.                         case '1':
  30.                             echo '小说';
  31.                             break;
  32.                         case '2':
  33.                             echo '工具书';
  34.                             break;
  35.                         case '3':
  36.                             echo '历史';
  37.                     }
  38.                 ?>
  39.         </td>
  40.         <td><?php echo $book['price'];?></td>
  41.         <td><?php echo $book['num'];?></td>
  42.         <td><?php echo $book['status']?'禁用':'启用'; ?></td>
  43.         <td><a href="?a=info&id=<?php echo $book['id'];?>">编辑</a>|<a href="?a=del&id=<?php echo $book['id'];?>">删除</a></td>
  44.     </tr>
  45.     <?php endforeach;?>
  46.     <tr>
  47.         <td colspan="2"><button><a href="?a=add">添加图书信息</a></button></td>
  48.         <td colspan="5" align="center">合计:<?php echo count($data);?>条记录</td>
  49.     </tr>
  50. </table>
  51. </div>
  52. </body>
  53. </html>

View-update

  1. <!doctype html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>图书信息</title>
  6. </head>
  7. <body>
  8. <h2 align="center">图书编辑</h2>
  9. <form action="?a=save" method="post">
  10.     <table border="1" cellpadding="5" cellspacing="0" align="center" width="50%">
  11.         <input type="hidden" name="id" value="<?php echo $data['id'];?>">
  12.         <tr>
  13.             <th>图书名称</th>
  14.             <td><input type="text" name="book_name" value="<?php echo $data['book_name']?>"></td>
  15.         </tr>
  16.         <tr>
  17.             <th>图书类别</th>
  18.             <td>
  19.                 <select name="category" id="">
  20.                     <option value="1" <?php if($data['category']=='1'){echo $selected="selected";}?>>小说</option>
  21.                     <option value="2" <?php if($data['category']=='2'){echo $selected="selected";}?>>工具书</option>
  22.                     <option value="3" <?php if($data['category']=='3'){echo $selected="selected";}?>>历史</option>
  23.                 </select>
  24.             </td>
  25.         </tr>
  26.         <tr>
  27.             <th>价格</th>
  28.             <td><input type="text" name="price" value="<?php echo $data['price']?>"></td>
  29.         </tr>
  30.         <tr>
  31.             <th>存库数量</th>
  32.             <td><input type="number" name="num" value="<?php echo $data['num']?>"></td>
  33.         </tr>
  34.         <tr>
  35.             <th>状态</th>
  36.             <td>
  37.                 <input type="radio" name="status" value="0" <?php if($data['status']=='0'){echo $checked="checked";}?>>启用
  38.                 <input type="radio" name="status" value="1" <?php if($data['status']=='1'){echo $checked="checked";}?>>禁用
  39.             </td>
  40.         </tr>
  41.         <tr>
  42.             <td colspan="2" align="center">
  43.                 <button>保存</button>
  44.                 <button type="reset">重置</button>
  45.             </td>
  46.         </tr>
  47.     </table>
  48. </form>
  49. </body>
  50. </html>

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