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我目前正在試圖序列相當複雜的對象,使其恢復爲JSON與Symfony的串行響應。我得到了以下對象:Symfony的ObjectNormalizer空屬性路徑
/**
* @Doctrine\Entity
* @Doctrine\Table(name="Fichiers")
*/
class Fichier{
/**
* @Doctrine\Column(name="id", type="integer")
* @Doctrine\Id
* @Doctrine\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @Doctrine\OneToOne(targetEntity="Utilisateur")
* @Doctrine\JoinColumn(name="idProprietaire", referencedColumnName="id", nullable=true)
*/
protected $proprietaire;
/**
* @Doctrine\OneToOne(targetEntity="Fichier")
* @Doctrine\JoinColumn(name="idParent", referencedColumnName="id")
*/
protected $parent;
/**
* @Doctrine\Column(name="estDossier", type="boolean")
* @Assert\NotBlank()
*/
protected $estDossier;
/**
* @Doctrine\Column(name="nom", type="string", length=250)
* @Assert\NotBlank()
*/
protected $nom;
/**
* @Doctrine\ManyToMany(targetEntity="Groupe")
* @Doctrine\JoinTable(name="Fichiers_Groupes",
* joinColumns={@Doctrine\JoinColumn(name="idFichier", referencedColumnName="id")},
* inverseJoinColumns={@Doctrine\JoinColumn(name="idGroupe", referencedColumnName="id")}
*)
*/
protected $groupes;
/**
* @Doctrine\Column(name="extension", type="string", length=10)
*/
protected $extension;
/**
* @Doctrine\Column(name="dateCreation", type="datetime")
*/
protected $dateCreation;
/**
* @Doctrine\Column(name="dateModification", type="datetime")
*/
protected $dateModification;
/**
* @Doctrine\Column(name="taille", type="integer")
*/
protected $taille;
這是我的控制器代碼:
$fichier = $this->getDoctrine()->getRepository(Fichier::class)->find($idFichier);
$encoder = new JsonEncoder();
$normalizer = new ObjectNormalizer();
$normalizer->setCircularReferenceHandler(function ($object) {
return $object->getId();
});
$serializer = new Serializer(array($normalizer), array($encoder));
$jsonContent = $serializer->serialize($fichier, 'json');
我收到以下錯誤:
The property path should not be empty.
一些測試後,我發現,如果我手動把我對象的空性,我不會得到這個錯誤,但另外一個地方在字符串轉換失敗。使此功能後:
public function __toString()
{
return strval($this->getId());
}
我得到這個錯誤,考慮到ID = 4:
Notice: Undefined variable: 4
有沒有什麼辦法,使歸一化處理空的屬性,和/或修復這個錯誤?