ApiController.php

<?php

namespace Smoovio\Bundle\ApiBundle\Controller;

use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\ParameterBag;
use Smoovio\Bundle\CoreBundle\Entity\Genre;
use Smoovio\Bundle\CoreBundle\Entity\Movie;

class ApiController extends Controller
{
    /**
     * @Route("/movies/{slug}", methods={"POST"})
     */
    public function movieAction(Request $request)
    {
        $request->request = new ParameterBag(json_decode($request->getContent(), true));

        $movie = $this
            ->get('smoovio_core.repository.movie')
            ->findOneBySlug($request->get('slug'))
        ;

        if (!$movie) {
            throw $this->createNotFoundException('movie not found');
        }

        if ('show' === $request->get('action')) {
                return $this->render('SmoovioApiBundle:Endpoint:showMovie.json.twig',
                    ['movie' => $movie])
                ;
        }

        $em = $this->getDoctrine()->getManager();

        if ('delete' === $request->get('action')) {
            foreach ($movie->getRoles() as $role) {
                $em->remove($role);
            }

            $em->remove($movie);
            $em->flush();
        }

        if ('update' === $request->get('action')) {
            $data = $request->request->get('movie');

            $movie->setTitle($data['title']);
            $movie->setDescription($data['description']);

            $em->persist($movie);
            $em->flush();
        }
    }

    /**
     * @Route("/genres", methods={"POST"})
     */
    public function genreAction(Request $request)
    {
        $request->request = new ParameterBag(json_decode($request->getContent(), true));

        if ('create' === $request->get('action')) {
            $data = $request->request->get('genre');

            $genre = new Genre($data['title'], $data['slug']);

            $em = $this->getDoctrine()->getManager();
            $em->persist($genre);
            $em->flush();
        }
    }
}