protected function BookManager::buildBookOutlineData in Drupal 8

Same name and namespace in other branches

9 core/modules/book/src/BookManager.php \Drupal\book\BookManager::buildBookOutlineData()

Sorts and returns the built data representing a book tree.

Parameters

array $links: A flat array of book links that are part of the book. Each array element is an associative array of information about the book link, containing the fields from the {book} table. This array must be ordered depth-first.

array $parents: An array of the node ID values that are in the path from the current page to the root of the book tree.

int $depth: The minimum depth to include in the returned book tree.

Return value

array An array of book links in the form of a tree. Each item in the tree is an associative array containing:

link: The book link item from $links, with additional element 'in_active_trail' (TRUE if the link ID was in $parents).
below: An array containing the sub-tree of this item, where each element is a tree item array with 'link' and 'below' elements. This array will be empty if the book link has no items in its sub-tree having a depth greater than or equal to $depth.

2 calls to BookManager::buildBookOutlineData()

BookManager::bookSubtreeData in core/modules/book/src/BookManager.php: Gets the data representing a subtree of the book hierarchy.
BookManager::doBookTreeBuild in core/modules/book/src/BookManager.php: Builds a book tree.

File

core/modules/book/src/BookManager.php, line 1055

Class

BookManager: Defines a book manager.

Namespace

Drupal\book

Code

protected function buildBookOutlineData(array $links, array $parents = [], $depth = 1) {

  // Reverse the array so we can use the more efficient array_pop() function.
  $links = array_reverse($links);
  return $this
    ->buildBookOutlineRecursive($links, $parents, $depth);
}

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