Cannot create an instance of DateTime from serialized data - symfony

Question

I have a problem with the date.
Maybe I don't understand something in the process of serialization, but, when, I send a datetime to Api-Platform (Symfony) for example
dateEvaluation: "2017-12-05T11:52:00.000Z"
I obtain this message of error
Cannot create an instance of DateTime from serialized data because its constructor requires parameter "time" to be present.
This is my Entity
<?php
namespace App\Entity;
use ApiPlatform\Core\Annotation\ApiResource;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Serializer\Annotation\Groups;
/**
* #ORM\Entity(repositoryClass="App\Repository\EvaluationRepository")
* #ORM\HasLifecycleCallbacks()
* #ApiResource(attributes={
* "normalization_context"={
* "groups"={"Evaluation"}
* }
* })
*/
class Evaluation
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
* #Groups({"NotesEvaluations", "Evaluation"})
*/
private $id;
/**
* #var \DateTime
* #ORM\Column(type="datetime")
* #Groups({"Evaluation"})
*/
private $created;
/**
* #var \DateTime
* #ORM\Column(type="datetime")
* #Groups({"Evaluation"})
*/
private $updated;
/**
* #var \DateTime
* #ORM\Column(type="datetime")
* #Groups({"Evaluation"})
*/
private $dateEvaluation;
/**
* #var string
*
* #ORM\Column(type="text")
* #Groups({"Evaluation"})
*/
private $commentaire;
/**
* #var
*
* #ORM\ManyToOne(targetEntity="App\Entity\Personnel")
* #Groups({"NotesEvaluations", "Evaluation"})
*/
private $auteur;
/**
* #var
*
* #ORM\ManyToMany(targetEntity="App\Entity\Personnel")
*/
private $autorises;
/**
* #var integer
*
* #ORM\Column(type="integer")
*/
private $annee;
/**
* #var
*
* #ORM\ManyToOne(targetEntity="App\Entity\Module", inversedBy="evaluations")
* #Groups({"Evaluation"})
*/
private $module;
/**
* #var Boolean
*
* #ORM\Column(type="boolean")
* #Groups({"NotesEvaluations"})
*/
private $visible;
/**
* #var Boolean
*
* #ORM\Column(type="boolean")
* #Groups({"NotesEvaluations"})
*/
private $modifiable;
/**
* #var
*
* #ORM\ManyToOne(targetEntity="App\Entity\TypeGroupe")
* #Groups({"Evaluation"})
*/
private $typegroupe;
/**
* #var float
*
* #ORM\Column(type="decimal")
* #Groups({"Evaluation"})
*/
private $coefficient;
/**
* #return float
*/
public function getCoefficient(): float
{
return $this->coefficient;
}
/**
* #return mixed
*/
public function getTypegroupe()
{
return $this->typegroupe;
}
/**
* #param mixed $typegroupe
*/
public function setTypegroupe($typegroupe): void
{
$this->typegroupe = $typegroupe;
}
/**
* #return \DateTime
*/
public function getDateEvaluation(): \DateTime
{
return $this->dateEvaluation;
}
/**
* #param \DateTime $dateEvaluation
*/
public function setDateEvaluation(\DateTime $dateEvaluation): void
{
$this->dateEvaluation = $dateEvaluation;
}
/**
* #return string
*/
public function getCommentaire(): string
{
return $this->commentaire;
}
/**
* #param string $commentaire
*/
public function setCommentaire(string $commentaire): void
{
$this->commentaire = $commentaire;
}
/**
* #param float $coefficient
*/
public function setCoefficient(float $coefficient): void
{
$this->coefficient = $coefficient;
}
/**
* #return mixed
*/
public function getId()
{
return $this->id;
}
/**
* #return \DateTime
*/
public function getCreated(): \DateTime
{
return $this->created;
}
/**
* #param \DateTime $created
*/
public function setCreated(\DateTime $created): void
{
$this->created = $created;
}
/**
* #return \DateTime
*/
public function getUpdated(): \DateTime
{
return $this->updated;
}
/**
* #param \DateTime $updated
*/
public function setUpdated(\DateTime $updated): void
{
$this->updated = $updated;
}
/**
* #return mixed
*/
public function getAuteur()
{
return $this->auteur;
}
/**
* #param mixed $auteur
*/
public function setAuteur($auteur): void
{
$this->auteur = $auteur;
}
/**
* #return mixed
*/
public function getAutorises()
{
return $this->autorises;
}
/**
* #param mixed $autorises
*/
public function setAutorises($autorises): void
{
$this->autorises = $autorises;
}
/**
* #return int
*/
public function getAnnee(): int
{
return $this->annee;
}
/**
* #param int $annee
*/
public function setAnnee(int $annee): void
{
$this->annee = $annee;
}
/**
* #return mixed
*/
public function getModule()
{
return $this->module;
}
/**
* #param mixed $module
*/
public function setModule($module): void
{
$this->module = $module;
}
/**
* #return bool
*/
public function isVisible(): bool
{
return $this->visible;
}
/**
* #param bool $visible
*/
public function setVisible(bool $visible): void
{
$this->visible = $visible;
}
/**
* #return bool
*/
public function isModifiable(): bool
{
return $this->modifiable;
}
/**
* #param bool $modifiable
*/
public function setModifiable(bool $modifiable): void
{
$this->modifiable = $modifiable;
}
/**
* #ORM\PreUpdate
*/
public function updateDate(): void
{
$this->setUpdated(new \Datetime());
}
public function __construct()
{
$this->setCreated(new \Datetime());
$this->setUpdated(new \Datetime());
}
}
I don't understand why "time" is missing. Maybe it is for created or updated fields ? Anyway, created and updated fields return with ApiPlatform an object with timezone ...
created:
{timezone: {name: "Europe/Paris",…}, offset: 561, timestamp: -62169984561}
offset:561
timestamp:-62169984561
timezone:{name: "Europe/Paris",…}
Thanks for your help.
David

Answer 1

I've found a way to manage this error that works for me. I declare the DateTimeNormalizer in my config.yml like that :
datetime_normalizer:
class: Symfony\Component\Serializer\Normalizer\DateTimeNormalizer
public: false
tags: [serializer.normalizer]
I hope that will help you !

Answer 2

In my case, I was using Symfony's Serializer Component without Symfony project and on the process of denormalization I had that issue so I had to add the DateTimeNormalizer before the ObjectNormalizer on the array of normalizers like this:
$serializer = new Serializer([new DateTimeNormalizer(), new ObjectNormalizer(null, new CamelCaseToSnakeCaseNameConverter())]);
Note that the order here is important.

Answer 3

In v1.1, using the class \DateTimeImmutable instead of \DateTime is what api-platform wait by default.
class Evaluation {
public function __construct()
{
$this->setCreated(new \DateTimeImmutable());
$this->setUpdated(new \DateTimeImmutable());
}
}

Answer 4

Change \DateTime in your entity to \DateTimeInterface. It should work.