Symfony TextTypeExtension

services.yml

services:

    form.extension.text_type:
        class: PlatformBundle\Form\Extension\TextTypeExtension
        tags:
            - { name: form.type_extension, extended_type: Symfony\Component\Form\Extension\Core\Type\TextType }

TextTypeExtension.php

<?php

namespace PlatformBundle\Form\Extension;

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\OptionsResolver\OptionsResolver;

class TextTypeExtension extends AbstractTypeExtension
{
    public function getExtendedType()
    {
        return TextType::class;
    }

    public function buildView(FormView $view, FormInterface $form, array $options)
    {
        if (array_key_exists('type', $options)) {
            $view->vars['type'] = $options['type'];
        }
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefined('type');
    }
}