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copied!<p>You need to call <code>$this->get('session')->setLocale($locale)</code> (replace 'session' by 'request' for Symfony 2.1) inside your controller.</p> <p>I've created a form, to which I pass an array of languages:</p> <pre><code><?php class LanguageType extends AbstractType { public function buildForm(FormBuilder $builder, array $options) { $langs = $options['languages']; $langs = array_combine($langs, $langs); foreach ($langs as &$lang) { $lang = \Locale::getDisplayName($lang); } $builder->add('language', 'choice', array( 'choices' => $langs, 'required' => false, )); } public function getDefaultOptions(array $options) { return array( 'languages' => array('fr_FR', 'en_GB'), 'csrf_protection' => false, ); } public function getName() { return 'my_language'; } } </code></pre> <p>I submit this form to a separate action in a controller, in which I set the locale and return a redirection to last page:</p> <pre><code><?php class LanguageController extends Controller { public function switchLanguageAction() { $form = $this->get('form.factory')->create( new LanguageType(), array('language' => $this->get('session')->getLocale()), array('languages' => $this->container->getParameter('roger.admin.languages', null)) ); $request = $this->get('request'); $form->bindRequest($request); $referer = $request->headers->get('referer'); if ($form->isValid()) { $locale = $form->get('language')->getData(); $router = $this->get('router'); // Create URL path to pass it to matcher $urlParts = parse_url($referer); $basePath = $request->getBaseUrl(); $path = str_replace($basePath, '', $urlParts['path']); // Match route and get it's arguments $route = $router->match($path); $routeAttrs = array_replace($route, array('_locale' => $locale)); $routeName = $routeAttrs['_route']; unset($routeAttrs['_route']); // Set Locale $this->get('session')->setLocale($locale); return new RedirectResponse($router->generate($routeName, $routeAttrs)); } return new RedirectResponse($referer); } } </code></pre> <p>Works with any valid locale (you pass them as 'language' option while creating your form), provided that the PHP intl extension is enabled. If it's not, you'll need to replace <code>\Locale::getDisplayName($lang)</code> by a manually created list of locale names.</p>

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