$query->select('*')
->from($db->quoteName('#__spsimpleportfolio_items'))
->where($db->quoteName('enabled') . ' = 1')
->where($db->quoteName('access')." IN (" . implode( ',', JFactory::getUser()->getAuthorisedViewLevels() ) . ")")
->order($db->quoteName('ordering') . ' ASC')
->setLimit($params->get('limit', 6));