protected BookManager::findChildrenRelativeDepth(array $book_link)
Determine the relative depth of the children of a given book link.
Parameters
array $book_link: The book link.
Return value
int The difference between the max depth in the book tree and the depth of the passed book link.
File
- core/modules/book/src/BookManager.php, line 148
Class
- BookManager
- Defines a book manager.
Namespace
Drupal\book
Code
1 2 3 4 | protected function findChildrenRelativeDepth(array $book_link) { $max_depth = $this->bookOutlineStorage->getChildRelativeDepth($book_link, static::BOOK_MAX_DEPTH); return ($max_depth > $book_link['depth']) ? $max_depth - $book_link['depth'] : 0;} |
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