/**
* For period search
*
* @param DynamicQuery $query xe database query builder
* @param string $since since datetime
* @param string $until until datetime
* @return void
*/
private function periodWhere(DynamicQuery &$query, $since, $until)
{
if ($since !== null && $until !== null) {
$query->whereBetween('used.createdAt', [$since, $until]);
} elseif ($since !== null) {
$query->where('used.createdAt', '>', $since);
} elseif ($until !== null) {
$query->where('used.createdAt', '<', $until);
}
}
