Laravel study notes (3) Controller

Laravel6 document
Laravel Controller

1. The default PHP magic methods, __invoke , when the attempt to invoke a function to be called 对象when the method is called automatically

   class invoke
   {
       public function __invoke($x)
       {
           var_dump($x);
       }
   }
    
   $obj = new invoke;
   $obj(10); 
   

   __call and __callStatic , by calling the object's runTest it does not contain a () 方法, the call will automatically __call class () method. When we call this class does not exist 静态方法when runTest (), it will automatically call the class __callStatic () method

   class MethodTest
   {
       public function __call($name, $arguments)
       {
           // 注意：$name的值区分大小写
           echo "Calling object method '$name' " . implode(', ', $arguments) . "\n";
       }
       
       // PHP 5.3.0之后的版本
       public static function __callStatic($name, $arguments) 
       {
           echo "Calling static method '$name' " . implode(', ', $arguments) . "\n";
       }
   }   
   
   $obj = new MethodTest;
   $obj -> runTest('in object context');
   
   // PHP 5.3.0 版本以后
   MethodTest::runTest('in static context');
   

   Laravel, if you want to define only a single process controller behavior, you can place a __invoke method in the controller:

   namespace App\Http\Controllers;
   
   use App\User;
   use App\Http\Controllers\Controller;
   
   class ShowProfile extends Controller
   {
       /**
        * 显示给定用户的资料.
        *
        * @param  int  $id
        * @return View
        */
       public function __invoke($id)
       {
           return view('user.profile', ['user' => User::findOrFail($id)]);
       }
   }
   

   When registering a single routing behavior of the controller, you do not need to specify the method

   Route::get('user/{id}', 'ShowProfile');
   

   You can command in the make tools by Artisan: controller command --invokable option to generate a controller can call:

   php artisan make:controller ShowProfile --invokable
   

2. In both methods performed only intermediate controller

class UserController extends Controller
{
    /**
     * 实例化一个新的控制器实例.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('auth');

		// 只在方法first和second中执行中间件
        $this->middleware('log')->only('first', 'second');

        $this->middleware('subscribed')->except('store');
    }
}