Laravel教程：控制器（MVC框架的c）

php artisan make:controller <controller-name> --plain

将控制器名称替换为 。我们将通过传递一个参数来创建一个简单的构造函数 - simple。如果您不想创建自定义构造函数，则可以省略参数。创建的构造函数位于 app/Http/Controllers 中。您会发现基本编辑已自动完成，并且您可以添加自定义颜色。可以使用以下语法通过route.php 文件调用创建控制器。

语法

Route::get(‘base URI’,’controller@method’);

示例

php artisan make:controller UserController

第3步 - 在app/Http/Controller/UserController.php中可以看到创建的控制器已经为自己生成了基本代码，您可以添加自己的代码。

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class UserController extends Controller {
   //
}

前面我们了解了中间件，它可以在控制器中使用。中间件可以安装在控制器路径中或由控制器开发人员安装。可以使用中间件方法将中间件分配给控制器。注册的中间件也可以通过某些方式受到控制器的限制。路由中间件部分

Route::get('profile', [
   'middleware' => 'auth',
   'uses' => 'UserController@showProfile'
]);

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class UserController extends Controller {
   public function __construct(){
      $this->middleware('auth');
   }
}

示例

第 1 步 - 将以下行添加到 app/Http/routes.php 文件并保存。

routes.php

<?php
Route::get('/usercontroller/path',[
   'middleware' => 'First',
   'uses' => 'UserController@showPath'
]);

php artisan make:middleware FirstMiddleware

FirstMiddleware.php

<?php
namespace App\Http\Middleware;
use Closure;

class FirstMiddleware {
   public function handle($request, Closure $next) {
      echo '<br>First Middleware';
      return $next($request);
   }
}

php artisan make:middleware SecondMiddleware

第5步 - 添加以下代码，在app/Http/Middleware/SecondMiddleware.php中创建新的处理方法SecondMiddleware。

SecondMiddleware.php

<?php
namespace App\Http\Middleware;
use Closure;

class SecondMiddleware {
   public function handle($request, Closure $next){
      echo '<br>Second Middleware';
      return $next($request);
   }
}

    protected $routeMiddleware = [
        'auth' => \App\Http\Middleware\Authenticate::class,
        'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
        'can' => \Illuminate\Foundation\Http\Middleware\Authorize::class,
        'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
        'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
        'First'  => \App\Http\Middleware\FirstMiddleware::class,
        'Second'  => \App\Http\Middleware\SecondMiddleware::class,
    ];

php artisan make:controller UserController

app/Http/UserController.php

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class UserController extends Controller {
   public function __construct(){
      $this->middleware('Second');
   }
   public function showPath(Request $request){
      $uri = $request->path();
      echo '<br>URI: '.$uri;
      
      $url = $request->url();
      echo '<br>';
      
      echo 'URL: '.$url;
      $method = $request->method();
      echo '<br>';
      
      echo 'Method: '.$method;
   }
}

php artisan serve

http://localhost:8000/usercontroller/path 步骤 11 - 将出现以下输出。
Restful 资源控制器

通常在开发应用程序时我们需要进行 CRUD（创建、读取、更新、删除）。 Laravel 使这项任务变得简单。只需创建一个控制器，Laravel 就会提供 CRUD 操作的所有方法。您还可以在route.php 文件中编写路由的所有方法。

示例

php artisan make:controller MyController

app/Http/Controllers/MyController.php

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class MyController extends Controller {
   public function index(){
      echo 'index';
   }
   public function create(){
      echo 'create';
   }
   public function store(Request $request){
      echo 'store';
   }
   public function show($id){
      echo 'show';
   }
   public function edit($id){
      echo 'edit';
   }
   public function update(Request $request, $id){
      echo 'update';
   }
   public function destroy($id){
      echo 'destroy';
   }
}

步骤 3 – 将以下代码添加到文件中：/ http /routes.php

app/Http/routes.php

Route::resource('my','MyController');

第 4 步 - 我们使用源控制器编写 MyController 的所有方法。以下是资源管理器处理的活动列表。

Route::controller(‘base URI’,’<class-name-of-the-controller>’);

php artisan make:controller ImplicitController

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class ImplicitController extends Controller {
   /**
   * Responds to requests to GET /test
   */
   public function getIndex(){
      echo 'index method';
   }
   
   /**
   * Responds to requests to GET /test/show/1
   */
   public function getShow($id){
      echo 'show method';
   }
   
   /**
   * Responds to requests to GET /test/admin-profile
   */
   public function getAdminProfile(){
      echo 'admin profile method';
   }
   
   /**
   * Responds to requests to POST /test/profile
   */
   public function postProfile(){
      echo 'profile method';
   }
}

Route::controller('test','ImplicitController');

class MyClass{
   public $foo = 'bar';
}
Route::get('/myclass','ImplicitController@index');

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class ImplicitController extends Controller {
   private $myclass;
   
   public function __construct(\MyClass $myclass){
      $this->myclass = $myclass;
   }
   public function index(){
      dd($this->myclass);
   }
}

class MyClass{
   public $foo = 'bar';
}
Route::get('/myclass','ImplicitController@index');

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;

class ImplicitController extends Controller {
   public function index(\MyClass $myclass){
      dd($myclass);
   }
}