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实现一个迷你的MVC小框架
咸鱼老爷
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689 people have browsed it

实现一个迷你的mvc

  • 1 安装第三方数据库框架medoo
    composer require catfan/medoo
  • 2 安装第三方php模板引擎plates
    composer require league/plates
  • 3 创建框架核心目录core
  • 4 创建框架模型类Model.php，使用构造函数连接数据库
    1. <?php
    2. namespace core;
    3. use Medoo\Medoo;
    4. class Model extends Medoo{
    5.   public function __construct()
    6.   {
    7.       parent::__construct(
    8.           [
    9.               'database_type'=>'mysql',
    10.               'database_name'=>'php',
    11.               'server'=>'localhost',
    12.               'username'=>'root',
    13.               'password'=>'123456',
    14.           ]
    15.           );
    16.   }
    17. }
  • 5 创建框架视图类View.php
    1. <?php
    2. namespace core;
    3. use League\Plates\Engine;
    4. class View extends Engine{
    5.   public $templates;
    6.   public function __construct($path)
    7.   {
    8.       $this->templates=parent::__construct($path);
    9.   }
    10. }
  • 6 创建mvc目录 app/controllers,app/models,app/views
  • 7 创建自定义模型类UserModel.php
    1. <?php
    2. namespace models;
    3. use core\Model;
    4. //自定义模型类通常与一张数据表绑定，继承自框架核心模型类
    5. class UserModel extends Model{
    6.   public function __construct()
    7.   {
    8.       parent::__construct();
    9.   }
    10. }
  • 8 创建控制器UserController.php
    1. <?php
    2. namespace controllers;
    3. class UserController{
    4.   public $model;
    5.   public $view;
    6.   public function __construct($model,$view)
    7.   {
    8.       $this->model=$model;
    9.       $this->view=$view;
    10.   }
    11.   public function index()
    12.   {
    13.       return __METHOD__;
    14.   }
    15.   public function select()
    16.   {
    17.       //获取数据
    18.      $user= $this->model->select('user',['id','name','gender','age','email','borthday','create_time']);
    19.      //模板赋值
    20.      return $this->view->render('users/list',['users'=>$user]);
    21.   }
    22. }
  • 9 创建视图users/list.php
    1. <!DOCTYPE html>
    2. <html lang="zh-CN">
    3. <head>
    4.   <meta charset="UTF-8">
    5.   <meta http-equiv="X-UA-Compatible" content="IE=edge">
    6.   <meta name="viewport" content="width=device-width, initial-scale=1.0">
    7.   <title>Document</title>
    8.   <style>
    9.       .active{
    10.           color: green;
    11.       }
    12.       a{
    13.           text-decoration: none;
    14.           color: #000;
    15.       }
    16.   </style>
    17. </head>
    18. <body>
    19.   <table>
    20.       <caption>员工列表</caption>
    21.       <thead>
    22.           <tr>
    23.               <th>id</th>
    24.               <th>姓名</th>
    25.               <th>年龄</th>
    26.               <th>性别</th>
    27.               <th>邮箱</th>
    28.               <th>生日</th>
    29.               <th>入职日期</th>
    30.               <th>操作</th>
    31.           </tr>
    32.          <tbody>
    33.          <?php foreach($users as $v): ?>
    34.               <tr>
    35.                   <td><?= $v['id'] ?></td>
    36.                   <td><?= $v['name'] ?></td>
    37.                   <td><?= $v['age'] ?></td>
    38.                   <td><?= $v['gender'] ?></td>
    39.                   <td><?= $v['email'] ?></td>
    40.                   <td><?= $v['borthday'] ?></td>
    41.                   <td><?= $v['create_time'] ?></td>
    42.                   <td><button>编辑</button> <button>删除</button></td>
    43.               </tr>
    44.               <?php endforeach?>
    45.          </tbody>
    46.       </thead>
    47.   </table>
    48.   <p>
    49.   </p>
    50. </body>
    51. </html>
  • 10 配置composer.json文件 autoload psr-4自动映射
    1. {
    2.   "name": "wang/php.cn",
    3.   "description": "this is a test",
    4.   "require": {
    5.       "catfan/medoo": "^1.7",
    6.       "league/plates": "^3.4"
    7.   },
    8.   "autoload": {
    9.       "psr-4": {
    10.           "models\\": "app/models",
    11.           "views\\": "app/views",
    12.           "controllers\\": "app/controllers",
    13.           "core\\": "core"
    14.       }
    15.   }
    16. }
  • 11 使用compser -dump命令更新映射
  • 12 创建入口文件index.php
    ```
    <?php
    //入口文件

use controllers\UserController;
use core\View;
use models\UserModel;
require DIR.’/vendor/autoload.php’;
//模型
$model=new UserModel();
//视图
$view=new View(‘app/views’);
//控制器
$controller=new UserController($model,$view);
echo $controller->select();
```
浏览器访问入口文件index.php

Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：
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