private static function renderCsv($actionName, $source)
{
HttpUtil::sendDownloadHeaders($actionName . '.csv', 'text/csv');
$rows = $source->getRows();
if (count($rows) > 0) {
$keys = array_keys($rows[0]);
self::pruneKeys($keys);
echo afOutput::asCsv($keys);
foreach ($rows as $row) {
echo afOutput::asCsv(self::extractValues($row, $keys));
}
}
exit;
}