function entity_hierarchy_node_prepare_form in Entity Reference Hierarchy 8

Implements We are loading the hierarchy parents for a given node id, and adding it to the node object for later processing in HierarchyManagerInterface::addHierarchyFormElement, which is called in entity_hierarchy_form_node_form_alter().

See also

hook_node_prepare_form().

entity_hierarchy_form_node_form_alter

HierarchyManagerInterface::addHierarchyFormElement

HierarchyManagerInterface::hierarchyDefaultRecord

File

./entity_hierarchy.module, line 213

A module to make nodes hierarchical.

Code

function entity_hierarchy_node_prepare_form(NodeInterface $node) {

  /** @var \Drupal\entity_hierarchy\HierarchyManager $hierarchy_manager */
  $hierarchy_manager = \Drupal::service('entity_hierarchy.manager');

  /** @var \Drupal\entity_hierarchy\HierarchyOutlineStorage $hierarchy_storage */
  $hierarchy_storage = \Drupal::service('entity_hierarchy.outline_storage');

  // Load the parents if that hasn't been done before.
  $nid = $node
    ->id();
  if (!isset($node->entity_hierarchy_parents) && !empty($nid)) {
    $node->entity_hierarchy_parents = $hierarchy_storage
      ->hierarchyGetParents($node
      ->id());
  }

  // Cannot use module_invoke_all because it doesn't support references.
  foreach (\Drupal::moduleHandler()
    ->getImplementations('entity_hierarchy_default_parents') as $module) {
    $function = $module . '_entity_hierarchy_default_parents';
    $function($node);
  }
  if ($hierarchy_manager
    ->hierarchyCanBeChild($node) || $hierarchy_manager
    ->hierarchyCanBeParent($node)) {
    if (!isset($node->entity_hierarchy_parents) || empty($node->entity_hierarchy_parents)) {

      // Create a default entity_hierarchy object.
      $nid = empty($nid) ? null : $node
        ->id();
      $parent = $hierarchy_manager
        ->hierarchyDefaultRecord($nid, 0);

      // Set the type default if there is one.
      if (empty($nid)) {
        $config = \Drupal::config('entity_hierarchy.settings');
        $default = $config
          ->get('nh_defaultparent_' . $node
          ->getType());

        // Get the parent node id from passed in from the get params.
        $pnid = !empty($_GET['parent']) ? (int) $_GET['parent'] : $default;

        // Get the parent from the get string. User must have update perms for parent unless it is the default.
        $account = \Drupal::currentUser();
        if ($pnid && ($parent_node = Node::load($pnid))) {
          if ($hierarchy_manager
            ->hierarchyCanBeParent($node) && ($account
            ->hasPermission('create child of any parent') || $node
            ->access("update") || $parent_node
            ->id() == $default)) {
            $parent->pnid = $pnid;
          }
        }
      }
      $node->entity_hierarchy_parents[] = $parent;
    }
  }
}