function BookManager::deleteFromBook

Overrides BookManagerInterface::deleteFromBook

File

core/modules/book/src/BookManager.php, line 520

Class

BookManager

Defines a book manager.

Namespace

Code

public function deleteFromBook($nid) {
    $original = $this->loadBookLink($nid, FALSE);
    $this->bookOutlineStorage
        ->delete($nid);
    if ($nid == $original['bid']) {
        // Handle deletion of a top-level post.
        $result = $this->bookOutlineStorage
            ->loadBookChildren($nid);
        $children = $this->entityTypeManager
            ->getStorage('node')
            ->loadMultiple(array_keys($result));
        foreach ($children as $child) {
            $child->book['bid'] = $child->id();
            $this->updateOutline($child);
        }
    }
    $this->updateOriginalParent($original);
    $this->books = NULL;
    Cache::invalidateTags([
        'bid:' . $original['bid'],
    ]);
}