Symfony2.4 form 'This form should not contain extra fields' error

Question

I\'m trying to build app based on REST api ang AngularJS. I\'ve been following this tutorial http://npmasters.com/2012/11/25/Symfony2-Rest-FOSRestBundle.html but have to cha

Answer 1

Its because when you are generating the form you are adding submit buttons but when you are validating them you are not. try:

public function cpostAction(Request $request)
{
    $entity = new Task();
    $form = $this->createForm(new TaskType(), $entity)->add('submit','submit');
    ...

The submit button is technically a field even though symfony wont map it to an entity property by default. So when you generate the form with a submit button and then submit that form the form you generate in your validation controller action needs to also have a submit button.

Answer 2

If you wanna disable fields validation, you must add

public function setDefaultOptions(\Symfony\Component\OptionsResolver\OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'csrf_protection' => false,
        'validation_groups' => false,
    ));
}

And in buildForm method:

    public function buildForm(FormBuilderInterface $builder, array $options) {
        $builder->addEventListener(FormEvents::POST_SUBMIT, function ($event) {
            $event->stopPropagation();
        }, 900);
        $builder->add('field1','text')
                ->add('field2','text')
                .
                .
                .
    } 

For more details: http://symfony.com/doc/current/cookbook/form/dynamic_form_modification.html#cookbook-dynamic-form-modification-suppressing-form-validation

Answer 3

If you are adding a single SubmitType button or similar, you use the solution Chausser indicated

$entity = new Task();
$form = $this->createForm(new TaskType(), $entity)->add('submit','SubmitType::class');

However, in case you are using a CollectionType and embedding a set of sub forms, you need to include 'allow_add' => true in your parameters for that type. For example, in your EntityType form builder:

$builder->add('subEntities', CollectionType::class, array(
                'entry_type' => SubEntityType::class,
                'entry_options' => array('label' => false),
                'allow_add' => true,
            ))

Make sure you do that for all levels of embedding if you have multiple levels.

Answer 4

Working in Symfony 4/5 in CustomFormType

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults([
        'data_class' => CustomFormType::class,
        'allow_extra_fields' => true // <<<<<<<<<<<<<<<<<<<<<
    ]);
}

Answer 5

If you want the validator to ignore additional fields you should try passing 'allow_extra_fields' => true as an option to the FormBuilder.