Fix switching i18n

app/Http/Kernel.php

@@ -27,7 +27,7 @@ class Kernel extends HttpKernel
      */
     protected $middlewareGroups = [
         'web' => [
-            \Illuminate\Cookie\Middleware\EncryptCookies::class,
+            \App\Http\Middleware\EncryptCookies::class,
             \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
             \Illuminate\Session\Middleware\StartSession::class,
             \Illuminate\View\Middleware\ShareErrorsFromSession::class,

app/Http/Middleware/DetectLanguagePrefer.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Middleware;
 
+use Cookie;
 use Illuminate\Support\Arr;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
@@ -10,13 +11,12 @@ class DetectLanguagePrefer
 {
     public function handle($request, \Closure $next)
     {
-        $locale = $request->input('lang') ?? session('locale') ?? $request->getPreferredLanguage();
+        $locale = $request->input('lang') ?? $request->cookie('locale') ?? $request->getPreferredLanguage();
         if (($info = Arr::get(config('locales'), $locale)) && ($alias = Arr::get($info, 'alias'))) {
             $locale = $alias;
         }
         app()->setLocale($locale);
-        session(['locale' => $locale]);
-
+        Cookie::queue('locale', $locale);
         return $next($request);
     }
 }

app/Http/Middleware/EncryptCookies.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Cookie\Middleware\EncryptCookies as Middleware;
+
+class EncryptCookies extends Middleware
+{
+    /**
+     * The names of the cookies that should not be encrypted.
+     *
+     * @var array
+     */
+    protected $except = [
+        'locale',
+    ];
+}