Symfony2 REST post ctrl

RestController.php

/**
     * Create new service
     * @Post("/services/")
     *
     * @View("::api.html.twig")
     * @Security("has_role('ROLE_ADMIN')")
     *
     * @ApiDoc(
     *  authenticationRoles={"Admin"},
     *  input="Rimoto\PolicyBundle\Form\SCEServiceType",
     *  output="Rimoto\PolicyBundle\Entity\SCEService",
     *  statusCodes={
     *      200="Created new service",
     *      400="Inserted object is not valid and have errors"
     *  }
     * )
     *
     * @param Request $request
     * @return SCEService
     */
    public function newServiceAction(Request $request)
    {
        $srv = new SCEService();
        $form = $this->createForm(new SCEServiceType(), $srv);
        $form->handleRequest($request);

        if ($form->isValid()) {
            $em = $this->getDoctrine()->getManager();
            $em->persist($srv);
            $em->flush();

            return $srv;
        }
        throw new InvalidFormException($form);
    }