A Laravel middleware for transform String to Boolean

TransformStringBooleans.php

<?php

namespace App\Http\Middleware;

use Illuminate\Foundation\Http\Middleware\TransformsRequest;

class TransformStringBooleans extends TransformsRequest
{
    /**
     * Transform the given value.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return mixed
     */
    protected function transform($key, $value)
    {
        $lowercase = strtolower($value);

        if ($lowercase === 'true') {
            return true;
        } else if ($lowercase === 'false') {
            return false;
        }

        return parent::transform($key, $value);
    }
}