public function showMove($bookSlug, $chapterSlug)
{
$book = $this->bookRepo->getBySlug($bookSlug);
$chapter = $this->chapterRepo->getBySlug($chapterSlug, $book->id);
$this->checkOwnablePermission('chapter-update', $chapter);
return view('chapters/move', ['chapter' => $chapter, 'book' => $book]);
}