public function getAdditionalCharges()
{
$data = array();
$add_costs = ShipmentAdditionalCharge::model()->findAllByAttributes(array('shipment_id' => $this->id));
if (count($add_costs) != 0) {
foreach ($add_costs as $add_cost) {
array_push($data, array('charge_name' => $add_cost->name, 'charge_cost' => $add_cost->cost));
}
}
return $data;
}
