- // Sort pages and chapters
- $sortedBooks = [];
- $updatedModels = collect();
- $sortMap = json_decode($request->get('sort-tree'));
- $defaultBookId = $book->id;
-
- // Loop through contents of provided map and update entities accordingly
- foreach ($sortMap as $bookChild) {
- $priority = $bookChild->sort;
- $id = intval($bookChild->id);
- $isPage = $bookChild->type == 'page';
- $bookId = $this->bookRepo->exists($bookChild->book) ? intval($bookChild->book) : $defaultBookId;
- $chapterId = ($isPage && $bookChild->parentChapter === false) ? 0 : intval($bookChild->parentChapter);
- $model = $isPage ? $this->pageRepo->getById($id) : $this->chapterRepo->getById($id);
-
- // Update models only if there's a change in parent chain or ordering.
- if ($model->priority !== $priority || $model->book_id !== $bookId || ($isPage && $model->chapter_id !== $chapterId)) {
- $isPage ? $this->pageRepo->changeBook($bookId, $model) : $this->chapterRepo->changeBook($bookId, $model);
- $model->priority = $priority;
- if ($isPage) $model->chapter_id = $chapterId;
- $model->save();
- $updatedModels->push($model);
- }
-
- // Store involved books to be sorted later
- if (!in_array($bookId, $sortedBooks)) {
- $sortedBooks[] = $bookId;
- }
- }