$chapter = $this->entityRepo->getBySlug('chapter', $chapterSlug, $bookSlug);
$this->checkOwnablePermission('chapter-delete', $chapter);
$this->setPageTitle(trans('entities.chapters_delete_named', ['chapterName' => $chapter->getShortName()]));
$chapter = $this->entityRepo->getBySlug('chapter', $chapterSlug, $bookSlug);
$this->checkOwnablePermission('chapter-delete', $chapter);
$this->setPageTitle(trans('entities.chapters_delete_named', ['chapterName' => $chapter->getShortName()]));