TYPO3 Core

While implementing a simple ActionController, I wanted to return a simple 404 status code for a client to consume.

Reduced version of the controller:

<?php

use Psr\Http\Message\ResponseInterface;
use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;

class ExampleController extends ActionController
{
    public function indexAction(): ResponseInterface
    {
        $all = [];

        if (empty($all)) {
            $this->throwStatus(404);
        }

        return $this->htmlResponse();
    }
}

The call fails because throwStatus($statusCode, $statusMessage = null, $content = null) calls ResponseFactory::createResponse(int $code = 200, string $reasonPhrase = '')

This fails as the allowed NULL of $statusMessage is not allowed by createResponse.

If I expand the call to

$this->throwStatus(404, '');

I get another error, from TypoScriptRenderingMiddleware.php:76 with an error of PHP Warning: Undefined array key 0 in, something related to an empty Content-Type arary within the request headers. But that part could be related to a misconfiguration from my side.

A simple workaround for now is just to use

return new HtmlResponse('', 404);

but I'm not sure if that fits all contexts, and I expected throwStatus to work in any case.