app.php

<?php

include __DIR__ . '/../vendor/silex/autoload.php';

use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\HttpException;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

$app = new Silex\Application();

// Register extensions
$app->register(new Silex\Provider\TwigServiceProvider(), array(
    'twig.path' => __DIR__ . '/../views',
    'twig.class_path' => __DIR__ . '/../vendor/twig/lib',
));

$app->register(new Silex\Provider\UrlGeneratorServiceProvider());

$app->register(new Silex\Provider\FormServiceProvider(), array(
    'form.class_path' => __DIR__ . '/../vendor/symfony/src'
));

$app->register(new Silex\Provider\TranslationServiceProvider(), array(
  'locale_fallback' => 'en',
  'translation.class_path' => __DIR__ . '/../vendor/symfony/src',
  'translator.messages' => array()
));

$app->register(new Silex\Provider\SymfonyBridgesServiceProvider(), array(
    'symfony_bridges.class_path' => __DIR__ . '/../vendor/symfony/src'
));

$app['autoloader']->registerNamespace('Knp\Menu', __DIR__ . '/../vendor/KnpMenu/src');
$app['knp_menu.default_renderer'] = 'twig';
$app['knp_menu.menus'] = array('main' => 'main_menu');
$app->register(new \Knp\Menu\Silex\KnpMenuServiceProvider());

// Add layout
$app->before(function () use ($app) {
    $app['twig']->addGlobal('layout', $app['twig']->loadTemplate('layout.twig'));
});

// Register error handlers
$app->error(
    function (\Exception $e) use ($app) {
        if ($e instanceof NotFoundHttpException) {
            return $app['twig']->render('error.twig', array('code' => 404));
        }

        $code = ($e instanceof HttpException) ? $e->getStatusCode() : 500;
        return $app['twig']->render('error.twig', array('code' => $code));
    }
);

// Add pages
$pages = array(
    '/' => 'home',
    '/jezici' => 'languages',
        '/nemacki' => 'german',
        '/engleski' => 'english',
    '/o-name' => 'about',
    '/slike' => 'pictures',
);

foreach ($pages as $route => $view) {
    $app->get($route, function () use ($app, $view) {
        return $app['twig']->render($view . '.twig');
    })->bind($view);
}

$app->match('/kontakt/{sent}', function ($sent) use ($app, $view) {

    $form = $app['form.factory']
	    ->createBuilder('form')
	    ->add('name', 'text', array('label' => 'Ime:'))
	    ->add('email', 'email', array('label' => 'E-pošta:'))
	    ->add('message', 'textarea', array('label' => 'Poruka:'))
	    ->getForm();

    if ('POST' == $app['request']->getMethod()) {
        $form->bindRequest($app['request']);
        if ($form->isValid()) {
            $data = $form->getData();

            require_once __DIR__ . '/../vendor/swiftmailer/lib/swift_required.php';
            \Swift_Mailer::newInstance(\Swift_MailTransport::newInstance())
                ->send(\Swift_Message::newInstance()
                    ->setSubject(sprintf('Kontakt sa %s', $_SERVER['SERVER_NAME']))
                    ->setFrom(array($data['email']))
                    ->setTo(array('umpirsky@gmail.com'))
                    ->setBody($data['message'])
                );

            return $app->redirect($app['url_generator']->generate(
                'contact',
                array('sent' => true)
            ));
        }
    }

    return $app['twig']->render('contact.twig', array(
        'form' => $form->createView(),
        'sent' => $sent
    ));
})
    ->convert('sent', function ($sent) { return (bool) $sent; })
    ->value('sent', false)
    ->bind('contact');

// Menu    
$app['main_menu'] = function($app) {
    $menu = $app['knp_menu.factory']->createItem('root');
    $menu->setCurrentUri($app['request']->getRequestUri());
    
    $menu->addChild('Početna', array('route' => 'home'));
    $languages = $menu->addChild('Jezici', array('route' => 'languages'));
    $languages->addChild('Nemački', array('route' => 'german'));
    $languages->addChild('Engleski', array('route' => 'english'));
    $menu->addChild('O nama', array('route' => 'about'));
    $menu->addChild('Slike', array('route' => 'pictures'));
    $menu->addChild('Kontakt', array('route' => 'contact'));
    
    return $menu;
};

// Run
$app->run();