laravel在中间件内生成的变量如何传到控制器

Question

在中间件内获取到一个变量，如何返回到控制器中并使用这个变量！

Answer 1

做了个demo：

// web.php

Route::get('/check', 'CheckController@check')->middleware(App\Http\Middleware\CheckRequest::class);

// Middleware/CheckRequest.php

class CheckRequest

{

    /**

     * Handle an incoming request.

     *

     * @param  \Illuminate\Http\Request  $request

     * @param  \Closure  $next

     * @return mixed

     */

    public function handle($request, Closure $next)

    {

        $check_request = 'CheckRequest';

        $request->attributes->add(compact('check_request'));

        return $next($request);

    }

}

// CheckController.php

//use Request;

use Illuminate\Http\Request;

class CheckController extends Controller

{

    public function check(Request $request)

    {

        return $request->get('check_request'); // 输出CheckRequest

    }

    public function check2()

    {

        return Request::get('check_request'); // 输出CheckRequest

    }

}