public function render()
{
$options = Config::getValue('twig', 'options') ?: array();
$loader = new Twig_Loader_Filesystem($this->_loaderPath);
$environment = new Twig_Environment($loader, $options);
$environment->addExtension(new OuzoTwigExtension());
$this->initialize($environment);
$template = $environment->loadTemplate($this->_viewFilename);
return $template->render($this->_attributes);
}