/**  * @method static self WAITING()  * @method static self PUBLISHED()  */ class MyStringEnum extends \NeutronStars\Enum\Enum { public const WAITING = 'Waiting'; public const PUBLISHED = 'Published'; } /**  * @Entity()  */ class Post { /**  * @ORM\Id  * @ORM\GeneratedValue  * @ORM\Column(type="integer")   * @Groups(["post:details"])   * @var int   */ private $id; // ... Other field (name, createdAt, updatedAt etc..) /**  * For the customs type, please check the doctrine enum type documentation.  * @ORM\Column(type="my_string_enum")  * @Groups(["post:details"])   * @var MyStringEnum   */ private $state; public function __construct() { $this->state = MyStringEnum::WAITING(); } // ... All methods implemented. } /**  * @Route("/posts", name="list_post")  */ class ListPostController { /** @var PostRepository PostRepository */ private $postRepository; public function __construct(PostRepository $postRepository) { $this->postRepository = $postRepository; } public function __invoke(): JSONResponse { $serializer = new \Symfony\Component\Serializer\Serializer([ new \NeutronStars\Symfony\Enum\Normalizer\EnumNormalizer(MyStringEnum::class) ], [new \Symfony\Component\Serializer\Encoder\JsonEncode()]); return new JSONResponse( $serializer->normalize( $this->postRepository->findAll(), null, [ 'groups' => ['post:details'] ] ) ); } }