TYPO3 Core

This is my current solution as a workaround in a controller:

    public function processRequest(RequestInterface $request): ResponseInterface
    {
        if ($request->getMethod() === 'GET' && $request->getControllerActionName() === 'delete') {
            $content = GeneralUtility::makeInstance(ErrorPageController::class)->errorAction(
                'Method not allowed',
                'GET method not allowed for this action!',
                AbstractMessage::ERROR,
                0,
                405
            );
            throw new PropagateResponseException(new HtmlResponse($content, 405));
        }

        return parent::processRequest($request);
    }

The correct http status code is 405 in this case.

Simon Schaufelberger wrote in #note-1:

This is my current solution as a workaround in a controller:

[...]

The correct http status code is 405 in this case.

Side-note: HTTP status 405 must send an additional Allow header in the response.