/**
* Hide expired lessons
* Hides all lesson which meet the given constraints. Returns a query result with matching lessons.
*
* @param boolean $dryRun
* @return \TYPO3\CMS\Extbase\Persistence\Generic\QueryResult | NULL
*/
protected function hideExpiredLessons($dryRun)
{
$demand = $this->createDemandForExpiredLessons();
$lessons = $this->lessonRepository->findDemanded($demand);
if (!$dryRun) {
foreach ($lessons as $lesson) {
$lesson->setHidden(1);
$this->lessonRepository->update($lesson);
}
}
return $lessons;
}
