protected function _farm($from, $to, $action)
{
switch ($action) {
case static::ACT_CONVERT_TO_OBJECT:
/* @var $from Server */
$to->farm = ['id' => $from->farmId];
break;
case static::ACT_CONVERT_TO_ENTITY:
/* @var $to Server */
$to->farmId = ApiController::getBareId($from, 'farm');
break;
case static::ACT_GET_FILTER_CRITERIA:
return [['farmId' => ApiController::getBareId($from, 'farm')]];
}
}