为什么laravel的cookie是空的 - 5.7

my cookie is null! But I don't know :

use Illuminate\Support\Facades\Cookie;

HomeController:

public function index()
{
    Cookie::queue('currentLang', 'heb', 999999999);



      $cat1         = $this->categoryRepo->findCategoryById(1);
      $lastPosts    = $this->blogPosts->listBlogPosts(array('*'),'id','desc')->take(3);

    return view('front.index', compact('cat1','lastPosts'));
}

now I want to get this key from another controller:

LoginController:

public function showLoginForm()
{
    dd(Cookie::get('currentLang'));
    return view('auth.login');
}

but it returns null ! I'm working on localhost.

Cookie::queue(... is used to attach a cookie to your response(an alternative), per the docs. If you inspect the response headers you should notice that Set-Cookie: currentLang=someencryptedvalue does indeed exist.

I have created some prototype endpoints to illustrate creating and deleting cookies:

use Illuminate\Support\Facades\Cookie;

Route::get('/wont-clear-cookie', function() {
    Cookie::forget('currentLang');

    return redirect()->to('/get-cookie');
});

Route::get('/clear-cookie', function() {
    Cookie::queue(Cookie::forget('currentLang'));

    return redirect()->to('/get-cookie');
});

Route::get('/set-cookie', function() {
    Cookie::queue('currentLang', 'heb', 999999999);

    return redirect()->to('/get-cookie');
});

Route::get('/get-cookie', function() {
    dump(Cookie::get('currentLang'));
    dd(request()->cookie('currentLang'));
});

The above endpoints should be placed in web.php.

Also, Make sure your web middleware group is configured correctly in App\Http\Kernal.php:

'web' => [
    \App\Http\Middleware\EncryptCookies::class,
    \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
    \Illuminate\Session\Middleware\StartSession::class,
    // \Illuminate\Session\Middleware\AuthenticateSession::class,
    \Illuminate\View\Middleware\ShareErrorsFromSession::class,
    \App\Http\Middleware\VerifyCsrfToken::class,
    \Illuminate\Routing\Middleware\SubstituteBindings::class,
],