function _nodehierarchy_widgets_is_invalid_parent in Node Hierarchy 7.2

Same name and namespace in other branches

1. 6.3 nodehierarchy_widgets/nodehierarchy_widgets.module \_nodehierarchy_widgets_is_invalid_parent()
2. 6.2 nodehierarchy_widgets/nodehierarchy_widgets.module \_nodehierarchy_widgets_is_invalid_parent()
3. 7.4 nodehierarchy_widgets/nodehierarchy_widgets.module \_nodehierarchy_widgets_is_invalid_parent()

Return a list of menu items that are valid possible parents for the given node.

1 call to _nodehierarchy_widgets_is_invalid_parent()

_nodehierarchy_widgets_autocomplete_parent_validate in nodehierarchy_widgets/nodehierarchy_widgets.module

Validate a node hierarchy autocomplete in the format 'Tile [nid:xx]' or '[nid:xx]' or 'Title'.

File

nodehierarchy_widgets/nodehierarchy_widgets.module, line 120

Alternative parent selector widgets for Node Hierarchy.

Code

function _nodehierarchy_widgets_is_invalid_parent($parent_nid, $child_nid, $child_type) {
  $parent = node_load($parent_nid);

  // Check for a valid parent type.
  if (!$parent) {
    return t('The specified parent cannot be found');
  }

  // Check for a valid parent type.
  $types = nodehierarchy_get_allowed_parent_types($child_type);
  if (!in_array($parent->type, $types)) {
    return t('%title cannot be a parent of this node because %type is not an allowed parent node type.', array(
      '%title' => $parent->title,
      '%type' => node_type_get_name($parent->type),
    ));
  }

  // Check that the parent is not a child of itself
  if ($parent_nid == $child_nid) {
    return t('%title cannot be a parent of itself.', array(
      '%title' => $parent->title,
    ));
  }

  // Check that the parent is not a descendant of the given node.
  $ancestors = nodehierarchy_get_node_ancestor_nids($parent_nid);
  if (in_array($child_nid, $ancestors)) {
    return t('%title cannot be a parent of this node it is a descendant of the node.', array(
      '%title' => $parent->title,
    ));
  }
  return FALSE;
}