Laravel 4: Create multi language page with session

Laravel is a strong PHP framework that is widely used. Recently, I was developing with that framework and I needed to create a website with content in 2 languages: catalan and spanish.

To solve this problem you can use some options... like url with language or save language in session. I decided to use the last one.

I created this code:

filters.php

App::before(function($request) {
// We use the locale of the session
if ( Session::has('locale') ) { App::setLocale(Session::get('locale')); }
});

BaseController.php

class BaseController extends Controller {

public function switchLocale($lang) {
// We change the locale lang in the session and redirect back (see filter language in filters.php).
if ( in_array($lang, Config::get('app.available_language')) ) {
Session::put('locale', $lang);
}
return Redirect::back();
}
}

app.php

'locale' => 'es',
'fallback_locale' => 'ca',
'available_language' => array('es', 'ca'),

Finally,  in our view we use this code in the links used to change the language:

Catalan -> URL::action('BaseController@switchLocale', array('ca'))
Spanish -> URL::action('BaseController@switchLocale', array('es'))