public function HierarchyOutlineStorage::loadHierarchies in Entity Reference Hierarchy 8

Overrides HierarchyOutlineStorageInterface::loadHierarchies

File

src/HierarchyOutlineStorage.php, line 219

Definition of Drupal\entity_hierarchy\HierarchyOutlineStorage.

Class

HierarchyOutlineStorage

Defines a storage class for hierarchies outline.

Namespace

Drupal\entity_hierarchy

Code

public function loadHierarchies($nids) {
  $results = db_select('entity_hierarchy', 'h')
    ->fields('h', array(
    'pnid',
  ))
    ->condition('h.cnid', $nids, 'IN')
    ->execute()
    ->fetchAllAssoc('pnid', \PDO::FETCH_ASSOC);
  $pnids = array();
  foreach ($results as $result) {
    $pnids[] = $result['pnid'];
  }
  return $pnids;
}