private function getActiveDates()
{
$date = date("Y-m-d");
$f = new ARSelectFilter();
$f->setCondition(new AndChainCondition(array(gte(f('EyeExamSchedule.date'), $date), isnull(f('EyeExamSchedule.eyeExamRequestID')))));
$f->setGrouping(f('EyeExamSchedule.date'));
$f->setLimit(self::ACTIVE_DATES_LIMIT);
$timeList = ActiveRecordModel::getRecordSetFields('EyeExamSchedule', $f, array('date'));
// as result is an array of arrays with single value
$activeTimes = array();
foreach ($timeList as $id) {
$activeTimes[] = $id['date'];
}
return $activeTimes;
}
