public function filterByManufacturers($IDs)
{
$IDs = is_array($IDs) ? $IDs : ($IDs ? array($IDs) : array());
foreach ($IDs as $i => $id) {
$IDs[$i] = Manufacturer::toID($id);
}
if (!empty($IDs)) {
$this->sqlWhere['manufacturer_id IN (' . implode(',', $IDs) . ')'] = 1;
}
}