Symfony URL Manipulation

Some times it's very needy to Manipulate URL base on different condition. This example presents how to manipulate URL

namespace Chorke\Bundle\WebappBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;

/**
 * @Template
 * @Route("/home")
 */
class HomeController extends Controller
{
    private $lingos;
    private $locals;

    public function __construct()
    {
        $lingos = "ar|bn|en|fr|tk|zz";
        $this->lingos = str_replace("|zz", "", $lingos);
        $this->locals = explode('|', $this->lingos);
    }

    /**
     * @Route("/{_locale}",
     *  name="home_index", defaults={"_locale"="zz"},
     *  requirements={"_locale"="ar|bn|en|fr|tk|zz"})
     */
    public function indexAction($_locale)
    {
        if(!$this->hasLocal($_locale))
        {
            return $this->redirectToLocal('home_index');
        }
        $parameters = array(
           'locale'   => $_locale,
           'javapull' => $this->getAbsolutePath('java_pull'),
           'zendpull' => $this->getAbsolutePath('zend_pull')
        );
        return $parameters;
    }

    private function hasLocal($locale)
    {
        return in_array($locale, $this->locals);
    }

    private function redirectToLocal($route)
    {
        $parameters = array('_locale' => 'en');
        return $this->redirectToRoute($route, $parameters, Response::HTTP_TEMPORARY_REDIRECT);
    }

    private function getAbsolutePath($route, $parameters=array())
    {
       $absolutePath = $this->generateUrl(
          $route, $parameters, UrlGeneratorInterface::ABSOLUTE_URL
       );
       return $absolutePath;
    }

    private function getContextPath(Request $request)
    {
        $server = $this->getServerPath($request);
        $base   = $request->getBasePath();
        $contextPath = "{$server}{$base}";
        return $contextPath;
    }

    private function getServerPath(Request $request)
    {
       $scheme = $request->getScheme();
       $host   = $request->getHost();
       $port   = $request->getPort();
       
       $isDefaultHttp  = ($scheme == 'http' ) && ($port ==  80);
       $isDefaultHttps = ($scheme == 'https') && ($port == 443);
       $port = ($isDefaultHttp||$isDefaultHttps) ? '' : ":{$port}";
       $serverPath = "{$scheme}://{$host}{$port}";
       return $serverPath;
    }

}