#Session::put() only works once

Are you using the new web middleware as in the docs.

Adding to what @jlrdw said, using:

session()->save();

sometimes helps.

@jlrdw - jep - middleware is in place

@moharrum - doesn't work ...

First request: Session works Second request (when i try to update a value): value will not be persisted ...

Do you need to put in session?

Route::get('welcome/{locale}', function ($locale) {
\App::setLocale($locale);
});
\App::getLocale();

Have you tried this way from the docs

$request->session()->put('key', 'value');

@lara.croft irregardless that session deal has to be troubleshot.

@jlrdw nope ...

It is not even possible to "forget" the 'locale' key from session ... adding another is - again - no problem ...

Have you tried setting that value to nothing then immediately afterwards set it to what you need to set it to. This first

$request->session()->put('key', '');

You're setting/saving the session wrongly.

perhaps you need to clean your storage/framework/session folder (if the project still in development stage).

Route::group(['middleware' => ['web']], function () {
// put routes here
}

// on controller
use App;
use Session;

// try using these API's
Session::set('locale', 'fr');
App::setLocale(Session::get('locale'));


// The WEB middleware enables:
   'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
    ],

Okay, found it ...

I bootstrapped my i18n component in the boot method of the "AppServiceProvider", moved that booting process to my BaseController and it worked ... Makes sense since the session will be only available after the router booted - with that 'web' middleware ...

Thank you guys!

Cheers