Frontend controller

The frontend.controller frontend request attribute provides access to the \TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController object.

Example:

$frontendController = $request->getAttribute('frontend.controller');
$rootline = $frontendController->rootLine;  // Mind the capital "L"

Attention

In former TYPO3 versions you have to retrieve the TypoScriptFrontendController via the global variable $GLOBALS['TSFE'] . This should be avoided now, instead use the request attribute.