Gpf_Data_RecordSet::addColumn PHP Method

        public function addColumn($id, $defaultValue = "")
        {
            $this->_header->add($id);
            foreach ($this->_array as $record) {
                $record->add($id, $defaultValue);
            }
        }

    protected function afterExecute(Gpf_Data_RecordSet $inputResult) {
        $inputResult->addColumn(Pap_Db_Table_Payouts::AMOUNT);
        $inputResult->addColumn('users');

        $payoutHistoryIds = array();
        foreach ($inputResult as $record) {
            $payoutHistoryIds[] = $record->get('id');
        }

        $outputResult = $inputResult->toShalowRecordSet();

        $payeeData = $this->getPayeeData($payoutHistoryIds);

        foreach ($inputResult as $record) {
            $payoutHistoryId = $record->get('id');
            if(!isset($payeeData[$payoutHistoryId])) {
                $record->set(Pap_Db_Table_Payouts::AMOUNT, 0);
                $record->set("users", "");
            } else {
                if (!$this->matchesSearchCriteria($record, $payeeData[$payoutHistoryId])) {
                    $this->_count--;
                    continue;
                }
                $record->set("amount", $payeeData[$payoutHistoryId]['amount']);
                $record->set("users", $payeeData[$payoutHistoryId]['usersCount'].' '.
                ($payeeData[$payoutHistoryId]['usersCount'] > 1 ? $this->_("payees") : $this->_("payee")));
            }
            $outputResult->addRecord($record);
        }
        return $outputResult;
    }