Laravel Language ( Localization )

Kernel.php

<?php

protected $middlewareGroups = [
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \App\Http\Middleware\LanguageMiddleware::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
    ],
    
    // ...
];

LanguageController.php

<?php

//  app/Http/Controllers/LanguageController.php

namespace App\Http\Controllers;

use App\Http\Controllers\Controller;
use App\Http\Requests;
use Config;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Redirect;
use Illuminate\Support\Facades\Session;

class LanguageController extends Controller
{
  public function switchLang($lang)
  {
    if (array_key_exists($lang, Config::get('languages'))) {
        Session::set('applocale', $lang);
    }
    return Redirect::back();
  }
}

LanguageMiddleware.php

<?php

// app/Http/Middleware/LanguageMiddleware.php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Foundation\Application;
use Illuminate\Http\Request;
use Illuminate\Routing\Redirector;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Config;
use Illuminate\Support\Facades\Session;

class LanguageMiddleware
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if (Session::has('applocale') AND array_key_exists(Session::get('applocale'), Config::get('languages')))
        {
            $lang = Session::get('applocale'); 
            App::setLocale($lang);
        }
        else {
            // This is optional as Laravel will automatically set the fallback language if there is none specified
            App::setLocale(Config::get('app.fallback_locale'));
        }
        return $next($request);;
    }
}

languages.php

<?php

// config/languages.php

return [
    'en' => 'English',
    'fr' => 'Français',
];

navbar.blade.php

<li class="dropdown">
    <a href="#" class="dropdown-toggle" data-toggle="dropdown">
        {{ Config::get('languages')[App::getLocale()] }}
    </a>
    <ul class="dropdown-menu">
        @foreach (Config::get('languages') as $lang => $language)
            @if ($lang != App::getLocale())
                <li>
                    <a href="{{ route('lang.switch', $lang) }}">{{$language}}</a>
                </li>
            @endif
        @endforeach
    </ul>
</li>

PageController.php

<?php

// app/Http/Controllers/PageController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Http\Requests;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Config;
use Illuminate\Support\Facades\Session;

class PageController extends Controller
{
	protected $lang;

  public function __construct()
  {
    // default locale is en
    Session::has('applocale') ?: Session::set('applocale', 'en');

    $this->lang = Session::get('applocale');
  }

  public function index(Request $request)
  {
  	return View('pages.'.$this->lang.'.welcome');
  }
}

routes.php

<?php

//  app/Http/routes.php

// .......
/*
|--------------------------------------------------------------------------
| Application Routes
|--------------------------------------------------------------------------
|
| This route group applies the "web" middleware group to every route
| it contains. The "web" middleware group is defined in your HTTP
| kernel and includes session state, CSRF protection, and more.
|
*/

Route::group(['middleware' => ['web']], function () {
	
	Route::get('/', 'PageController@index');

	Route::get('/lang/{lang}', ['as' => 'lang.switch', 'uses'=>'LanguageController@switchLang']);

});

views

resources/views/pages/
  | fr
    | home
  | en
    | home