function _views_menu_reference_get_link_path_parents_hierarchy in Views Menu Reference 7

Private variant of views_menu_reference_get_link_path_parents_hierarchy(). Contains the true logic behind the caching.

Parameters

string $link_path:

Return value

array

1 call to _views_menu_reference_get_link_path_parents_hierarchy()

views_menu_reference_get_link_path_parents_hierarchy in ./views_menu_reference.module

Returns the <$link_path>'s parent menu hierarchy. It describes the mlids in each depth that may be direct (0) or indirect (1..*) parent. The hierarchy is indexed by the depth and may contain the tree items from more than one menu item,…

File

./views_menu_reference.module, line 58

views_menu_reference module core implementations.

Code

function _views_menu_reference_get_link_path_parents_hierarchy($link_path) {

  // Use the alias and source pathes because a link can directly link both.
  $link_pathes = array(
    $link_path => $link_path,
  );
  $link_path_alias = drupal_lookup_path('alias', $link_path);
  if ($link_path_alias !== FALSE) {
    $link_pathes[$link_path_alias] = $link_path_alias;
  }
  $link_path_source = drupal_lookup_path('source', $link_path);
  if ($link_path_source !== FALSE) {
    $link_pathes[$link_path_source] = $link_path_source;
  }

  // Special case: Add <front> placeholder if the link path is the frontpage!
  if ($link_path == variable_get('site_frontpage', 'node')) {
    $link_pathes['<front>'] = '<front>';
  }
  if (empty($link_pathes)) {

    // No matching results in the menu tree at all.
    return array();
  }

  // Get the <$link_path> menu items and their properties we need.
  $query = db_select('menu_links', 'ml');
  $query
    ->fields('ml', array(
    'mlid',
    'depth',
    'p1',
    'p2',
    'p3',
    'p4',
    'p5',
    'p6',
    'p7',
    'p8',
    'p9',
  ));
  $query
    ->condition('link_path', $link_pathes, 'IN');
  $result = $query
    ->execute();
  $parents_hierarchy = array();
  foreach ($result as $record) {

    // Process all pX Elements (not including sub menu entries!)
    $depth = $record->depth;
    $i = 0;
    while ($depth > 0) {
      $parent_field = 'p' . $depth;
      $parent_field_value = $record->{$parent_field};
      if (!empty($parent_field_value)) {

        // We index the fields by their value so we ensure that no item is added twice with high performance.
        // This truely is nothing else then $parents_hierarchy[$i][] PLUS unique.
        $parents_hierarchy[$i][$parent_field_value] = $parent_field_value;
      }
      $depth--;
      $i++;
    }

    // Process all pX+ Elements (including sub menu entries!)
    $depth = $record->depth;
    $i = 1;
    while ($i <= $depth) {
      $parent_field = 'p' . $i;
      $parent_field_value = $record->{$parent_field};
      if (!empty($parent_field_value)) {

        // We index the fields by their value so we ensure that no item is added twice with high performance.
        // This truely is nothing else then $parents_hierarchy[$i][] PLUS unique.
        $parents_hierarchy[$i . '+'][$parent_field_value] = $parent_field_value;
      }
      $i++;
    }
  }
  return $parents_hierarchy;
}