Method options

public static function options($type = 0)
{
    $db = Factory::getDBO();
    //build the list of categories
    $query = 'SELECT a.title AS text, a.id AS value, a.parent_id as parentid' . ' FROM #__phocacart_categories AS a' . ' WHERE a.published = 1' . ' ORDER BY a.ordering';
    $db->setQuery($query);
    $items = $db->loadObjectList();
    $catId = -1;
    $javascript = 'class="form-control" size="1" onchange="submitform( );"';
    $tree = array();
    $text = '';
    $tree = PhocacartCategory::CategoryTreeOption($items, $tree, 0, $text, $catId);
    return $tree;
}