symfony handle request upload file is null - php

Question

I'm trying to upload multiple files on Symfony but when the form is submitted the form image field returns a null object like this
object(Doctrine\Common\Collections\ArrayCollection)#1455 (1) {
["elements":"Doctrine\Common\Collections\ArrayCollection":private]=>
array(1) {
[0]=>
object(AdminBundle\Entity\ImageNew)#1717 (5) {
["nom":"AdminBundle\Entity\ImageNew":private]=>
NULL
["path":"AdminBundle\Entity\ImageNew":private]=>
NULL
["idimage":"AdminBundle\Entity\ImageNew":private]=>
NULL
["categorie":"AdminBundle\Entity\ImageNew":private]=>
NULL
["file":"AdminBundle\Entity\ImageNew":private]=>
NULL
}
}
}
But when I get files directly inside the request files attributes file exist. I've tried to upload a file by accessing the attribute in the request, it works but it still wants to upload file via Symfony $form request handler.
That's my controller
public function addColorAction(Request $request, Article $article)
{
$couleur = new Couleur();
$form = $this->createForm('AdminBundle\Form\CouleurType', $couleur);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$em = $this->getDoctrine()->getManager();
$files = $couleur->getImages();
echo "<pre>";
var_dump($files); die;
$imgs = $request->files->get("adminbundle_couleur")["images"];
foreach ($imgs as $img) {
$image = new ImageNew();
$image->setFile($img["file"]);
$image->upload();
$couleur->addImage($image);
$em->persist($image);
$em->flush();
}
$color_art_dispo = new CouleurArticleDispo();
$color_art_dispo->setEnStock(true);
$color_art_dispo->setArticle($article);
$color_art_dispo->setCouleur($couleur);
$em->persist($couleur);
$em->persist($color_art_dispo);
$em->flush();
return $this->redirectToRoute('article_index');
}
return $this->render(
'admin/article/couleur/new.html.twig', array(
'couleur' => $couleur,
'form' => $form->createView(),)
);
}
The couleur entity
class Couleur
{
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="nom", type="string", length=255)
* #Assert\NotBlank(message="Veuillez entrer le nom de la couleur")
*/
private $nom;
/**
* #var string
*
* #ORM\Column(name="code_couleur", type="string", length=6)
* #Assert\NotBlank(message="Veuillez entrer le code couleur correspondant")
* #Assert\Length(
* min=6,
* max=6,
* minMessage="Le code couleur n'est pas correct.",
* maxMessage="Le code couleur n'est pas correct.",
* )
*/
private $codeCouleur;
/**
*
* #ORM\OneToMany(targetEntity="CouleurArticleDispo", mappedBy="_couleurs")
*/
private $colorArticles;
/**
* Many Colors have Many Images.
*
* #ORM\ManyToMany(targetEntity="ImageNew",cascade={"remove"})
* #ORM\JoinTable(name="color_images",joinColumns={#ORM\JoinColumn(name="color_id",referencedColumnName="id", onDelete="CASCADE")},
* inverseJoinColumns={#ORM\JoinColumn(name="image_id", referencedColumnName="idimage", onDelete="CASCADE")}
* )
*/
private $images;
public function __toString()
{
return (string) $this->getNom();
}
/**
* Class Constructor
*/
public function __construct()
{
$this->images = new ArrayCollection();
}
}
This is the image entity
class ImageNew
{
/**
* #var string
*
* #ORM\Column(name="nom", type="string", length=100)
*/
private $nom;
/**
* #var string
*
* #ORM\Column(name="path", type="string", length=255)
*/
private $path;
/**
* #var integer
*
* #ORM\Column(name="idimage",type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $idimage;
/**
* #var \AdminBundle\Entity\Categorie
*
* #ORM\ManyToOne(targetEntity="AdminBundle\Entity\Categorie",cascade={"persist"},inversedBy="slides")
* #ORM\JoinColumns({
* #ORM\JoinColumn(name="id_categorie",referencedColumnName="idcategorie",nullable=true,onDelete="SET NULL")
* })
*/
private $categorie;
/**
* #Assert\NotNull()
* #Assert\File(
* maxSize = "6000k",
* mimeTypes = {"image/png", "image/jpg", "image/bmp"},
* mimeTypesMessage = "Please upload a valid Image File (PNG, JPEG or BMP)"
* )
*/
private $file;
public function __toString()
{
return (string) $this->getPath();
}
}
and this is the couleur type
class CouleurType extends AbstractType
{
/**
* {#inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('nom')
->add('codeCouleur')
->add(
'images', CollectionType::class,
array(
'label' => 'Images de l\'article ayant cette couleur',
'entry_type' => ImageNewFileType::class,
'allow_add' => true,
'allow_delete' => true,
)
);
}
}
and finally the image type
class ImageNewFileType extends AbstractType
{
/**
* {#inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add(
'file', FileType::class,
[
'mapped' => false,
'required' => false,
'attr' => array(
'accept' => 'image/*',
)
]
);
}
}

Answer 1

I think you shouldn't add the mapped => false option in the ImageNewFileType.
https://symfony.com/doc/current/reference/forms/types/form.html#mapped
As you can see in the documentation the field is ignored when writing to the object.

Answer 2

the error was inside the ImageNewFileType, because of property 'mapped' => false, the form wasn't set uploaded files information in file field of ImageNew Entity, so I've replaced this :
class ImageNewFileType extends AbstractType
{
/**
* {#inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add(
'file', FileType::class,
[
'mapped' => false,
'required' => false,
'attr' => array(
'accept' => 'image/*',
)
]
);
}
}
by this:
class ImageNewFileType extends AbstractType
{
/**
* {#inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add(
'file', FileType::class,
[
'mapped' => true(or live this empty because by default it is true),
'required' => false,
'attr' => array(
'accept' => 'image/*',
)
]
);
}
}