public function indexAction($featureId)
    {
        $em = $this->getDoctrine()->getManager();

        /** @var Feature $feature */
        $feature = $em->getRepository('EcommerceBundle:Feature')->find($featureId);

        if (!$feature) {
            throw $this->createNotFoundException('Unable to find Feature entity.');
        }

        return array(
            'feature'    => $feature,
        );
    }