Serialize Entity with ManyToMany relationship in Symfony 5 - php

Question

I have a test app with a manytomany relationship and I can get a JSON correctly:
Job.php:
<?php
namespace App\Entity;
use Symfony\Component\Serializer\Annotation\Groups;
use App\Repository\JobRepository;
use Doctrine\ORM\Mapping as ORM;
use \App\Entity\Category;
/**
* #ORM\Entity(repositoryClass=JobRepository::class)
*/
class Job
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255)
*/
private $name;
/**
* #ORM\ManyToMany(targetEntity="App\Entity\Category", inversedBy="jobs")
* #ORM\JoinTable(
* name="jobs_categories",
* joinColumns={#ORM\JoinColumn(name="job_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="category_id", referencedColumnName="id")}
* )
*/
private $categories;
/**
* Constructor
*/
public function __construct()
{
$this->categories = new \Doctrine\Common\Collections\ArrayCollection();
}
public function getId(): ?int
{
return $this->id;
}
public function getName(): ?string
{
return $this->name;
}
public function setName(string $name): self
{
$this->name = $name;
return $this;
}
public function addCategory($categories): self
{
$this->categories[] = $categories;
return $this;
}
public function removeCategory(Category $categories)
{
$this->categories->removeElement($categories);
}
public function getCategories()
{
return $this->categories;
}
public function __toString () {
return $this->name;
}
}
Category.php
<?php
namespace App\Entity;
use App\Repository\CategoryRepository;
use Doctrine\ORM\Mapping as ORM;
use App\Entity\Job;
/**
* #ORM\Entity(repositoryClass=CategoryRepository::class)
*/
class Category
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255)
*/
private $name;
/**
* #ORM\ManyToMany(targetEntity="Job", mappedBy="categories")
*/
protected $jobs;
/**
* Constructor
*/
public function __construct()
{
$this->jobs = new \Doctrine\Common\Collections\ArrayCollection();
}
public function getId(): ?int
{
return $this->id;
}
public function getName(): ?string
{
return $this->name;
}
public function setName(string $name): self
{
$this->name = $name;
return $this;
}
public function addJob(Job $post): self
{
$this->jobs[] = $post;
return $this;
}
public function removeJob(Job $post)
{
$this->jobs->removeElement($post);
}
public function getJob()
{
return $this->jobs;
}
public function __toString () {
return $this->name;
}
}
index.html (JQuery Ajax):
// Añadir tarea
$('#addJob').click(function () {
var name = $('#name').val();
var categories = [];
var categoriesChbx = $(".category");
if (name === "") {
alert("Tienes que agregar una tarea."); // TODO
} else {
categoriesChbx.each(function () {
var item = $(this);
item.is(':checked') ? categories.push(item.attr("name")) : "";
});
var job = {
name: name,
categories: categories
};
var error = false;
$.ajax({
url: "{{ url('ajax_save_job') }}",
type: "POST",
dataType: "json",
data: {
"job": job,
"error": error
},
async: true,
success: function (data, error) {
console.log(data, error);
if (error !== false) {
// TODO
errorDiv = $('.error');
errorDiv.html(error);
errorDiv.show();
}
}
});
}
return false;
});
BackendController.php (ajax method):
public function ajaxSaveJob ()
{
//dump($request->isXMLHttpRequest());
if ($request->isXMLHttpRequest()) {
$jobArray = $request->request->get('job');
$jobInclude = $this->getDoctrine()->getRepository(Job::class)->findOneBy(['name' => $jobArray['name']]);
if (!isset($jobInclude)) {
$job = new Job();
$job->setName($jobArray['name']);
if (isset($jobArray['categories'])) {
foreach ($jobArray['categories'] as $value) {
$category = new Category();
$category = $this->getDoctrine()->getRepository(Category::class)->findOneBy(['name' => $value]);
$job->addCategory($category);
}
}
$entityManager = $this->getDoctrine()->getManager();
$entityManager->persist($job);
$entityManager->flush();
$encoders = [new JsonEncoder()];
$normalizers = [new ObjectNormalizer()];
$serializer = new Serializer($normalizers, $encoders);
// Serializar objeto a JSON
$jobJson = $serializer->serialize($job, 'json', [
'circular_reference_handler' => function ($object) {
return $object->getName();
}
]);
dump($jobJson);
return new JsonResponse([ 'data' => $jobJson, 'error' => false ]);
}
else {
return new JsonResponse([ 'data' => '', 'error' => 'Ese taréa ya existe' ]);
}
}
else {
return new JsonResponse([ 'data' => '', 'error' => "Error: ..." ]); // TODO
}
}
I want to get somethink like this:
{
"id":137,
"name":"43545",
"categories":["php", "javascript"]
}
But instead I get this:
{
"id":142,
"name":"Diego",
"categories":[{"id":5,"name":"javascript","job":[{"id":103,"name":"5654","categories":[{"id":4,"name":"php","job":["5654",{"id":139,"name":"Mar\u00eda","categories":["php","javascript",{"id":6,"name":"css","job":[{"id":135,"name":"53453453","categories":["javascript","css"]},{"id":138,"name":"Fernando","categories":["javascript","css"]},"Mar\u00eda",{"id":140,"name":"Jose","categories":["css"]}]}]}]},"javascript"]},{"id":135,"name":"53453453","categories":["javascript",{"id":6,"name":"css","job":["53453453",{"id":138,"name":"Fernando","categories":["javascript","css"]},{"id":139,"name":"Mar\u00eda","categories":[{"id":4,"name":"php","job":[{"id":103,"name":"5654","categories":["php","javascript"]},"Mar\u00eda"]},"javascript","css"]},{"id":140,"name":"Jose","categories":["css"]}]}]},{"id":138,"name":"Fernando","categories":["javascript",{"id":6,"name":"css","job":[{"id":135,"name":"53453453","categories":["javascript","css"]},"Fernando",{"id":139,"name":"Mar\u00eda","categories":[{"id":4,"name":"php","job":[{"id":103,"name":"5654","categories":["php","javascript"]},"Mar\u00eda"]},"javascript","css"]},{"id":140,"name":"Jose","categories":["css"]}]}]},{"id":139,"name":"Mar\u00eda","categories":[{"id":4,"name":"php","job":[{"id":103,"name":"5654","categories":["php","javascript"]},"Mar\u00eda"]},"javascript",{"id":6,"name":"css","job":[{"id":135,"name":"53453453","categories":["javascript","css"]},{"id":138,"name":"Fernando","categories":["javascript","css"]},"Mar\u00eda",{"id":140,"name":"Jose","categories":["css"]}]}]},"Diego"]}]
}
¿How could you get only the categories associated with the currently handled job?
PS: Sorry for my bad English.