function MenuLinkParent::transform

Find the parent link GUID.

Overrides ProcessPluginBase::transform

File

core/modules/migrate/src/Plugin/migrate/process/MenuLinkParent.php, line 123

Class

MenuLinkParent

This plugin figures out menu link parent plugin IDs.

Namespace

Code

public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
    $parent_id = array_shift($value);
    if (!$parent_id) {
        // Top level item.
        return '';
    }
    // This BC layer is included because if the plugin constructor was called
    // in the legacy way with a migration_lookup process plugin, it may have
    // been preconfigured with a different migration to look up against. While
    // this is unlikely, for maximum BC we will continue to use the plugin to do
    // the lookup if it is provided, and support for this will be removed in
    // Drupal 9.
    if ($this->migrationPlugin) {
        try {
            $already_migrated_id = $this->migrationPlugin
                ->transform($parent_id, $migrate_executable, $row, $destination_property);
        } catch (MigrateSkipRowException $e) {
        }
    }
    else {
        $lookup_result = $this->migrateLookup
            ->lookup($this->migration
            ->id(), [
            $parent_id,
        ]);
        if ($lookup_result) {
            $already_migrated_id = $lookup_result[0]['id'];
        }
    }
    if (!empty($already_migrated_id) && ($link = $this->menuLinkStorage
        ->load($already_migrated_id))) {
        return $link->getPluginId();
    }
    if (isset($value[1])) {
        list($menu_name, $parent_link_path) = $value;
        $links = [];
        if (UrlHelper::isExternal($parent_link_path)) {
            $links = $this->menuLinkStorage
                ->loadByProperties([
                'link__uri' => $parent_link_path,
            ]);
        }
        else {
            $url = Url::fromUserInput("/{$parent_link_path}");
            if ($url->isRouted()) {
                $links = $this->menuLinkManager
                    ->loadLinksByRoute($url->getRouteName(), $url->getRouteParameters(), $menu_name);
            }
        }
        if (count($links) == 1) {
            
            /** @var \Drupal\Core\Menu\MenuLinkInterface $link */
            $link = reset($links);
            return $link->getPluginId();
        }
    }
    throw new MigrateSkipRowException(sprintf("No parent link found for plid '%d' in menu '%s'.", $parent_id, $value[0]));
}