Pass an variable to the template from the middleware in TYPO3 11.5

Question

I want to parse my .browserslistrc in the middleware of TYPO3 to decide which build should be loaded. Yes, I know that I can do it in JavaScript but I want to make the decision earlier.

This is what I return in the process() function:

$response = $handler->handle($request->withAttribute('isModernBrowser', $isModern));
return $response;

isModern is just a boolean which contains the information if a modern or an "old" browser calls the page.

How can I catch isModern in my template?

Answer 1

ServerRequest is available in $GLOBALS['TYPO3_REQUEST']. Add this object or the specific attribute with $GLOBALS['TYPO3_REQUEST']->getAttribute('isModernBrowser') to view.