laravel5.3中介層

https://wastemobile.gitbooks.io/laravel-5-chinese-document/content/middleware.html

 Laravel 框架已經內建一些中介層，包括維護、身份驗證、CSRF 保護，等等。所有的中介層都位於 app/Http/Middleware 目錄內

一、建立一個中介層

php artisan make:middleware OldMiddleware 

此指令將會 在 app/Http/Middleware 目錄內建立一個名稱為 OldMiddleware 的類別

//以下中介層，$request->age不大於200即轉走！

<?php

namespace App\Http\Middleware;

use Closure;

class CheckAge
{
    /**
     * Run the request filter.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if ($request->age <= 200) {
            return redirect('home');
        }

        return $next($request);
    }

}
二、有些事可以在haddle之前先做 之前

<?php

namespace App\Http\Middleware;

use Closure;

class BeforeMiddleware
{
    public function handle($request, Closure $next)
    {
        // Perform action

        return $next($request);
    }
}



之後
<?php

namespace App\Http\Middleware;

use Closure;

class AfterMiddleware
{
    public function handle($request, Closure $next)
    {
        $response = $next($request);

        // Perform action

        return $response;
    }
}


三、註冊
全域：只要將中介層的類別加入到 app/Http/Kernel.php 的 $middleware 屬性清單列表中。
指派給路由：
1.先在Kernel.php指定key
如：
protected $routeMiddleware = [
    'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
    'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
    'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
    'can' => \Illuminate\Auth\Middleware\Authorize::class,
    'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
    'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
];

你即可在設定路由時使用
Route::get('admin/profile', function () {
    //
})->middleware('auth');