php - Symfony Rest Controller 限制序列化深度

Question

我有实体位和关系 ManyToMany 开发人员，对于开发人员，我使用 * @Groups({"for_project"}) ，当我使用此注释时，作为响应，看不到字段开发人员，我查看文档并看到 * @MaxDepth(2 )并使用它但仍然为空。为什么 ？

 {
"0": {
"id": 501,
"created": "2015-11-27T12:25:11+0200",
"developer_id": {},
"rate": 4,
"comment": "fsefsf"
},
"1": {
"id": 502,
"created": "2015-11-27T12:25:46+0200",
"developer_id": {},
"rate": 3,
"comment": "feasf"
}
}

class Bit
{
/**
 * @var integer
 *
 * @ORM\Column(name="id", type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 * @Expose()
 * @Groups({"for_project"})
 */
private $id;

/**
 * @var datetime $created
 *
 * @Gedmo\Timestampable(on="create")
 * @ORM\Column(type="datetime")
 * @Expose()
 * @Groups({"for_project"})
 */
private $created;

/**
 * @var datetime $updated
 *
 * @Gedmo\Timestampable(on="update")
 * @ORM\Column(type="datetime")
 * @Groups({"for_project"})
 */
private $updated;

/**
 * @var \Artel\ProfileBundle\Entity\Developer
 *
 * @ORM\ManyToOne(targetEntity="Developer")
 * @ORM\JoinColumns({
 *   @ORM\JoinColumn(name="developer_id", referencedColumnName="id", onDelete="CASCADE")
     * })
     * @Expose()
     * @Groups({"for_project"})
     * @MaxDepth(2)
     */
    private $developerId;


class BitController extends FOSRestController
...anotaion block 
public function getBitByProjectAction($id, $token)
{
$this->getDoctrine()->getRepository('ArtelProfileBundle:Users')->findOneBySecuritytoken($token);

    if (!empty($user) || $security->isGranted('ROLE_ADMIN') ) {
        $bits = $this->getDoctrine()->getManager()
            ->getRepository('ArtelProfileBundle:Bit')
            ->findBitByProject($id, $token);
        if (!$bits) {
            throw new NotFoundHttpException();
        }
        return View::create()
            ->setStatusCode(200)
            ->setData($bits)
            ->setSerializationContext(
                SerializationContext::create()
                    ->enableMaxDepthChecks()
                    ->setGroups(array("for_project"))
            );

已解决
我明白，需要为字段实体开发人员添加 * @Groups({"for_project"}) 但是当我删除@MaxDepth时，我仍然有字段实体开发人员，为什么需要@MaxDepth？ 我明白，当没有@MaxDept使用时，我们有关系字段的最大深度，例如我有实体位，位有开发人员和开发人员有用户，如果我想要可见字段实体用户我需要为字段开发人员添加@MaxDept(3)实体位

Answer 1

当没有@MaxDept使用时，我们有关系字段的最大深度，例如我有实体位，位有开发人员和开发人员有用户，如果我想要可见字段实体用户我需要为字段开发人员添加@MaxDept(3)实体位 行动中:

            return View::create()
            ->setStatusCode(200)
            ->setData($bits)
            ->setSerializationContext(
                SerializationContext::create()
                    ->enableMaxDepthChecks()
                    ->setGroups(array("for_project"))
            );

并作出回应

[
{
"id": 501,
"created": "2015-11-30T17:49:19+0200",
"developer_id": {
  "id": 201,
  "rate": 0,
  "user": [
    {
      "first_name": "Ivan",
      "last_name": "Shuba"
    }
  ]
},
"rate": 4,
"comment": "fsefse"
 }
]

和实体

class Bit
{
/**
 * @var integer
 *
 * @ORM\Column(name="id", type="integer")
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 * @Expose()
 * @Groups({"for_project"})
 */
private $id;

/**
 * @var datetime $created
 *
 * @Gedmo\Timestampable(on="create")
 * @ORM\Column(type="datetime")
 * @Expose()
 * @Groups({"for_project"})
 */
private $created;

/**
 * @var datetime $updated
 *
 * @Gedmo\Timestampable(on="update")
 * @ORM\Column(type="datetime")
 * @Groups({"for_project"})
 */
private $updated;

/**
 * @var \Artel\ProfileBundle\Entity\Developer
 *
 * @ORM\ManyToOne(targetEntity="Developer")
 * @ORM\JoinColumns({
 *   @ORM\JoinColumn(name="developer_id", referencedColumnName="id", onDelete="CASCADE")
     * })
     * @Expose()
     * @Groups({"for_project"})
     * @MaxDepth(3)
     */
    private $developerId;

class Developer
{
    /**
 * @ORM\OneToMany(targetEntity="Artel\ProfileBundle\Entity\Users", mappedBy="developer",  cascade={"persist", "remove"})
 * @Expose()
 * @Groups({"for_project"})
 */
protected $user;

class Users implements UserInterface
{
    /**
 * @var string
 *
 * @ORM\Column(name="first_name", type="string", length=255, nullable=false)
 * @Expose()
 * @Assert\Length(min=3, max=255)
 * @Groups({"for_project"})
 */
protected $firstName;

/**
 * @var string
 *
 * @ORM\Column(name="last_name", type="string", length=255, nullable=true)
 * @Expose()
 * @Groups({"for_project"})
 */
protected $lastName;