/** * Convert the given trend DAO to an array and prepend metadata. * * @param Tracker_TrendDao $trendDao trend DAO * @return array associative array representation of the trend DAO with metadata prepended */ protected function _toArray($trendDao) { $trendArray = array('_id' => $trendDao->getKey(), '_type' => 'Tracker_Trend'); return array_merge($trendArray, $trendDao->toArray()); }