FOSRestBundle post many to one relation - api

Question

I would like to know how to properly post data when Entity has another ManyToOne relation in FOSRestBundle.
User entity has locale (locale_id):
/**
* #ORM\ManyToOne(targetEntity="Locale")
* #ORM\JoinColumn(name="locale_id", referencedColumnName="id")
*/
private $locale;
I was hoping that passing something like:
{
"user":{
"firstName":"John",
"emailAddress":"somewhere#somehow.com",
"lastName":"Doe",
"sex":"1",
"locale":{
"id":"1"
}
}
}
will work, but it does not pass the validation and Symfony throws:
{"code":400,"message":"Validation Failed","errors":{"children":{"firstName":[],"lastName":[],"emailAddress":[],"sex":[],"locale":{"errors":["This value is not valid."]}}}}
As you can see, locale is still wrong.
Does anyone know how can I post it properly?
EDIT
Here is how the form looks like:
<?php
namespace Software\Bundle\Form\Type;
use Doctrine\ORM\EntityRepository;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Validator\Constraints\Email;
use Symfony\Component\Validator\Constraints\Length;
use Symfony\Component\Validator\Constraints\NotBlank;
/**
* Class UserType
* #package Software\Bundle\Form\Type
*/
class UserType extends AbstractFormType
{
public function buildForm(FormBuilderInterface $builder, array $option)
{
$builder
->add('firstName', 'text', [
'label' => 'word.first_name',
'required' => true
])
->add('lastName', 'text', [
'label' => 'word.last_name',
'required' => true
])
->add('emailAddress', 'email', [
'label' => 'word.email_address',
'required' => true
])
->add('sex', 'choice', [
'label' => 'word.sex',
'choices' => [
'0' => 'word.male',
'1' => 'word.female'
],
'required' => true,
'empty_value' => 'word.select',
'empty_data' => null
])
->add('locale', 'entity', [
'label' => 'word.locale',
'required' => false,
'property' => 'code',
'class' => 'SoftwareBundle:Locale',
'query_builder' => function(EntityRepository $er) {
return $er->createQueryBuilder('l')
->orderBy('l.code', 'ASC');
},
'placeholder' => 'word.select',
'empty_data' => null
])
;
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults([
'translation_domain' => 'general',
'data_class' => 'Software\Bundle\Entity\User',
'attr' => ['novalidate' => 'novalidate'],
'csrf_protection' => false
]);
}
public function getName()
{
return 'user';
}
}
EDIT 2
And the controller:
public function postAction(Request $request)
{
$form = $this->createForm(new UserType(), new User());
$form->handleRequest($request);
if($form->isValid())
{
die('are you valid or not??');
}
return $this->view($form, 400);
}

Answer 1

Try without the "1" and only with 1 , otherwise it can be interpreted as string.
Edit :
{
"user":{
"firstName":"John",
"emailAddress":"somewhere#somehow.com",
"lastName":"Doe",
"sex":"1",
"locale": 1
}
}
}