public function validateTransactions($object, array $xactions)
{
$errors = array();
$valid = PhabricatorCalendarExport::getPolicyModes();
$valid = array_fuse($valid);
foreach ($xactions as $xaction) {
$value = $xaction->getNewValue();
if (isset($valid[$value])) {
continue;
}
$errors[] = $this->newInvalidError(pht('Mode "%s" is not a valid policy mode. Valid modes are: %s.', $value, implode(', ', $valid)), $xaction);
}
return $errors;
}
