Why doesn't the form validate when using the "collection" type with text values?

Question

symfony

public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('description', 'text')
            ->add('coordinates', 'collection', array(
                'type' => 'text'
            ));

    }

    public function setDefaultOptions(OptionsResolverInterface $resolver){

        $resolver->setDefaults(array(
            'allow_extra_fields' => true,
            'csrf_protection' => false,
            'data_class' => '\AppBundle\Entity\Marker'
        ));

    }

I send:

$dataMarker = array(
                'description' => "asdasdada",
                'coordinates' => array(123123, 234234)
            );

            $form = $this->get('form.factory')->create(new MarkerType(), new Marker());
            $form->submit($dataMarker);

Returns "This form should not contain extra fields".
And if you use the text type instead of colleciton, and pass text to the coordinates field as well, then it normally passes without errors.

Answer 1

It turned out that you need to specify "allow_extra_fields" directly in the field initialization array with the collection type:

->add('coordinates', 'collection', array(
                'type' => 'text',
                'allow_add' => true,
                'allow_extra_fields' => true
            ));

Only sherali there in general this error.