DataTransformer to remove seconds for HTML5 datepicker with symfony forms

DateTimeNoSecondsTransformer.php

<?php

namespace App\Form;

use Symfony\Component\Form\DataTransformerInterface;

class DateTimeNoSecondsTransformer implements DataTransformerInterface
{
    public function transform(mixed $value)
    {
        if (null === $value) {
            return null;
        }

        return \DateTime::createFromFormat('Y-m-d H:i', $value->format('Y-m-d H:i'));
    }

    public function reverseTransform(mixed $value)
    {
        return $value;
    }
}