Middleware of Laravel to Convert Incoming Request contain boolean string to boolean. Kinda head ache when laravel didn't detect boolean string

BooleanStringConverter.php

<?php

class BooleanStringConverter extends TransformsRequest
{
    protected function transform($key, $value)
    {
        if (in_array($key, $this->except, true)) {
            return $value;
        }

        if (is_string($value)) {
            if ($value == 'true') {
                return true;
            }

            if ($value == 'false') {
                return false;
            }
        }

        return $value;
    }
}