Laravel helper to create a FormRequest from a Request object

createFormRequest.php

<?php

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Http\Request;
use Illuminate\Routing\Redirector;

if (!function_exists('createFormRequest')) {
    /**
     * Create a FormRequest from a Request object
     *
     * @param Request      $from
     * @param class-string $to a FormRequest class string
     *
     * @return FormRequest|null
     */
    function createFormRequest(Request $from, string $to): ?FormRequest
    {
        if (!is_a($to, FormRequest::class, true)) {
            return null;
        }

        $formRequest = FormRequest::createFrom($from, new $to());
        $formRequest->setContainer(app())->setRedirector(app(Redirector::class));
        $formRequest->validateResolved();

        return $formRequest;
    }
}