How set null on field using symfony form - php

Question

I'm using Symfony 2.7.39 and FOSRestBundle to build a simple REST api.
In this case I have this entity:
class DocumentacionMaquina extends Documentacion
{
/**
* #ORM\ManyToOne(targetEntity="PDCA\RestBundle\Entity\Archivo", cascade={"all"})
* #ORM\JoinColumn(name="declaracion_conformidad_id", referencedColumnName="id", nullable=true, onDelete="CASCADE")
*
* #Serializer\Groups({"details"})
*/
private $declaracion_conformidad;
// ...
}
ArchivoType:
class ArchivoType extends AbstractType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('nombre');
}
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults(array(
'data_class' => 'PDCA\RestBundle\Entity\Archivo',
'csrf_protection' => false,
'cascade_validation' => true
));
}
}
DocumentacionMaquinaType:
class DocumentacionMaquinaType extends DocumentacionType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
parent::buildForm($builder, $options);
$builder
->add('maquina', 'entity', array(
'class' => 'PDCA\RestBundle\Entity\Maquina'
))
->add('declaracion_conformidad', new ArchivoType(),
array('required'=>false)
)
;
}
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults(array(
'data_class' => 'PDCA\RestBundle\Entity\DocumentacionMaquina',
'csrf_protection' => false,
'cascade_validation' => true
));
}
}
When I create a new DocumentacionMaquina entity launching a POST it works as expected:
{
"pdca_restbundle_documentacion":
{
"maquina": 752,
"declaracion_conformidad": {
"nombre": "fichero10"
}
}
But I would like to send a null (edit entity and create new entities with optional Archivo):
{
"pdca_restbundle_documentacion":
{
"maquina": 752,
"declaracion_conformidad": null
}
This is the validation error when I send a null value:
This value is not valid.
In my controller:
$entity = new DocumentacionMaquina();
$form = $this->createForm(new DocumentacionMaquinaType(), $entity, array('method' => $request->getMethod()));
$form->submit($request->get($form->getName()), false);
if !($form->isValid()) {
return $this->view(array('form' => $form), Codes::HTTP_BAD_REQUEST);
}
Any help will be appreciated.
EDIT #1
I created a simple entities with no inheritance for test but with equal result.
Entity Prueba:
namespace PDCA\RestBundle\Entity;
use Doctrine\ORM\Mapping AS ORM;
use JMS\Serializer\Annotation as Serializer;
use Symfony\Component\Validator\Constraints as Assert;
/**
* #ORM\Entity
*/
class Prueba
{
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*
* #Serializer\Groups({"list", "details"})
*/
private $id;
/**
* #ORM\ManyToOne(targetEntity="PDCA\RestBundle\Entity\Hijo", cascade={"all"})
* #ORM\JoinColumn(name="marcado_ce_id", referencedColumnName="id", nullable=true, onDelete="CASCADE")
*
* #Serializer\Groups({"list", "details"})
*/
private $marcado_ce;
/**
* #ORM\Column(type="string", unique=false, length=255, nullable=false)
*
* #Serializer\Groups({"list", "details"})
*
* #Assert\NotBlank()
* #Assert\Length(max=255)
*/
private $nombre;
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set marcado_ce
*
* #param \DateTime $marcado_ce
* #return Prueba
*/
public function setMarcadoCe(Hijo $marcado_ce = null)
{
$this->marcado_ce = $marcado_ce;
return $this;
}
/**
* Get marcado_ce
*
* #return \DateTime
*/
public function getMarcadoCe()
{
return $this->marcado_ce;
}
/**
* Set nombre
*
* #param string $nombre
* #return Prueba
*/
public function setNombre($nombre)
{
$this->nombre = $nombre;
return $this;
}
/**
* Get nombre
*
* #return string
*/
public function getNombre()
{
return $this->nombre;
}
}
Entity Hijo
namespace PDCA\RestBundle\Entity;
use Doctrine\ORM\Mapping AS ORM;
use JMS\Serializer\Annotation as Serializer;
use Symfony\Component\Validator\Constraints as Assert;
/**
* #ORM\Entity
*
*/
class Hijo
{
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*
* #Serializer\Groups({"list", "details", "backend_creacion"})
*/
private $id;
/**
* #ORM\Column(type="string", unique=false, length=255, nullable=false)
*
* #Serializer\Groups({"list", "details"})
*
* #Assert\NotBlank()
* #Assert\Length(max=255)
*/
private $nombre;
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set nombre
*
* #param string $nombre
* #return Artchivo
*/
public function setNombre($nombre)
{
$this->nombre = $nombre;
return $this;
}
/**
* Get nombre
*
* #return string
*/
public function getNombre()
{
return $this->nombre;
}
}
PruebaType and HijoType:
namespace PDCA\RestBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use PDCA\RestBundle\Entity\Prueba;
class PruebaType extends AbstractType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('nombre')
->add('marcado_ce', new HijoType(), array('required'=>false))
;
}
/**
* #param OptionsResolverInterface $resolver
*/
public function setDefaultOptions(OptionsResolverInterface $resolver) {
/** #var OptionResolver $resolver */
$this->configureOptions($resolver);
}
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults(array(
'data_class' => 'PDCA\RestBundle\Entity\Prueba',
'csrf_protection' => false
));
}
/**
* #return string
*/
public function getName()
{
return 'pdca_restbundle_prueba';
}
}
Type Hijo
namespace PDCA\RestBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
class HijoType extends AbstractType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('nombre')
;
}
/**
* #param OptionsResolverInterface $resolver
*/
public function setDefaultOptions(OptionsResolverInterface $resolver) {
/** #var OptionResolver $resolver */
$this->configureOptions($resolver);
}
public function configureOptions(OptionsResolver $resolver) {
$resolver->setDefaults(array(
'data_class' => 'PDCA\RestBundle\Entity\Hijo',
'csrf_protection' => false
));
}
/**
* #return string
*/
public function getName()
{
return null;
}
}
Controller:
$entity = new Prueba();
$form = $this->createForm(new PruebaType(), $entity, array('method' => $request->getMethod()));
$form->submit($request->get($form->getName()), false);
if ($form->isValid()) {
//Persist $entity
}
return $this->view(array('form' => $form), Codes::HTTP_BAD_REQUEST);
When I do a POST with subentity, entities Prueba and Hija are persisted sucesfully:
{
"pdca_restbundle_prueba": {
"nombre": "nombre prueba",
"marcado_ce":
{
"nombre": "fichero4"
}
}
}
But when I use "marcado_ce": null:
{
"pdca_restbundle_prueba": {
"nombre": "nombre prueba2",
"marcado_ce": null
}
}
This fail with this message:
{
"code": 400,
"message": "Validation Failed",
"errors": {
"errors": [
"Este valor no es valido."
],
"children": {
"nombre": {},
"marcado_ce": {
"children": {
"nombre": {}
}
}
}
}
}
Debugging this problem, here is where code launch an exception resulting in validation failed:
File Form.php, line 570:
if ($this->config->getCompound()) {
if (null === $submittedData) {
$submittedData = array();
}
if (!is_array($submittedData)) {
**throw new TransformationFailedException('Compound forms expect an array or NULL on submission.');**
}
I uploaded a image with stack trace here:
https://i.stack.imgur.com/QzPDc.png
I edited Form.php code replacing Exception code with this (line 750). But this isn't a solution. I will try to understand what is the root cause, maybe I miss something with symfony-forms.
if (!is_array($submittedData)) {
$submittedData = array();
}