How to add data-type to option in select using Symfony form builder?

Question

symfony

I'm creating a form using Symfony's built-in form builder.
$builder->add('category', 'select');
category is a reference to an entity, this entity, in addition to id and name, also has a type. How can I add this line so that when creating a select
{{ form_widget(form.category) }}
, the data-type attribute with the value from the type field is added to the option.

Answer 1

$builder->add('category', null, [
    'choice_attr' => function ($entity, $currentChoiceKey) {
        return ['data-type' => $entity->getType()];
    }
]);

Source

Answer 2

something like this
zeka.kiev.ua/symfony2-form-%D0%B4%D0%BE%D0%B1%D0%B...