Typo3 Replace old getPageLink in an extbase controller

If you wounder how to create links in an extbase controller instead of using the old pi_getPageLink methode you should have a look at this:

$this->controllerContext->getUriBuilder()->reset()
  ->setArguments([
    'tx_myext[action]'=>'show', 
    'tx_myext[param]'=>$model->getUid() ])
  ->setTargetPageUid($GLOBALS["TSFE"]->id)
  ->setCreateAbsoluteUri(true)
  ->buildFrontendUri();

To get more information you may search for getUriBuilder