Compound forms expect an array or NULL on submission

Question

I have a problem with my symfony 5 application. When I try to insert an object with the file field set to null, I get the following error:

Caused by:
Symfony\Component\Validator\ConstraintViolation {#4637 ▼
  root: Symfony\Component\Form\Form {#4042 ▶}
  path: "children[file]"
  value: ""
}
Symfony\Component\Form\Exception\TransformationFailedException {#4119 ▼
  -invalidMessage: null
  -invalidMessageParameters: []
  #message: "Compound forms expect an array or NULL on submission."
  #code: 0
  #line: 582
  trace: {▶}
}

here is the data i am sending :

WORD\BookStoreBundle\Entity\Summary {#3870 ▼
  -id: 16
  -title: "Contrats à durée déterminée"
  -description: "bonjour ceci est une description"
  -position: 0
  -type: 1
  -createdAt: DateTime @1673427068 {#3872 ▶}
  -updatedAt: DateTime @1673427068 {#3851 ▶}
  -parent: null
  #file: null
  -deleteAt: null
}

here is my form with file field not required :

class SummaryType extends AbstractType
{
    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('title', Field\TextType::class)
                ->add('description', Field\TextType::class, array(
                    "required" => false
                ))
                ->add('position', Field\IntegerType::class, array(
                    "empty_data" => '0'
                ))
                ->add('parent', SummaryIntegerType::class, array(
                    "required" => false
                ))
                ->add('file', SummaryFileType::class, array(
                    "required" => false,
                ))
        ;
    }

    /**
     * {@inheritdoc}
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'csrf_protection'   => false,
            'data_class' => 'WORD\BookStoreBundle\Entity\Summary',
            'validation_groups' => array('rest_bookstore', 'rest_bookstore_summary_file'),
            'file'              => null
        ));
    }



}

the file field is defined as required=false so I don't understand why I am getting this error. did i miss something?

Compound forms expect an array or NULL on submission

0 Answers0