BookOutlineStorage::getBookSubtree

public BookOutlineStorage::getBookSubtree($link, $max_depth)

Get book subtree.

Parameters

array $link: A fully loaded book link.

int $max_depth: The maximum supported depth of the book tree.

Return value

array Array of unordered subtree book items.

Overrides BookOutlineStorageInterface::getBookSubtree

File

core/modules/book/src/BookOutlineStorage.php, line 188

Class

BookOutlineStorage
Defines a storage class for books outline.

Namespace

Drupal\book

Code

public function getBookSubtree($link, $max_depth) {
  $query = db_select('book', 'b', array('fetch' => \PDO::FETCH_ASSOC));
  $query->fields('b');
  $query->condition('b.bid', $link['bid']);

  for ($i = 1; $i <= $max_depth && $link["p$i"]; ++$i) {
    $query->condition("p$i", $link["p$i"]);
  }
  for ($i = 1; $i <= $max_depth; ++$i) {
    $query->orderBy("p$i");
  }
  return $query->execute();
}
doc_Drupal
2016-10-29 08:48:24
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