public function safeUp()
{
$table = new Postmaster_NotificationSentRecord();
$this->addColumnAfter($table->getTableName(), 'senderId', ColumnType::Int, 'notificationId');
return true;
}
public function getSentNotifications()
{
$record = new Postmaster_NotificationSentRecord();
$query = craft()->db->createCommand()->select('*, count(dateCreated) count')->from($record->getTableName())->group('dateCreated');
return $query->queryAll();
}