/**
  * @param Request $request
  * @View()
  * @return array
  */
 public function postProjectAction(Request $request)
 {
     $project = new Project();
     $car = new Car();
     $project->setCars($car);
     $form = $this->createForm(new ProjectType(), $project);
     $form->handleRequest($request);
     /** @var DocumentManager $dm */
     $dm = $this->get('doctrine_mongodb')->getManager();
     $dm->persist($car);
     $dm->flush();
     return $this->view($car, 201);
 }