1: <?php
 2: 
 3: namespace ShippoClient\Http\Request\Transactions;
 4: 
 5: use ShippoClient\Http\Request\CommonParameter;
 6: use TurmericSpice\Container\InvalidAttributeException;
 7: 
 8: /**
 9:  * A Transaction is the purchase of a Shipment Label for a given Shipment Rate.
10:  * Transactions can be as simple as posting a Rate ID, but also allow you to define further parameters of the desired Label, such as pickup and notifications.
11:  * Transactions can only be created for Rates that are less than 7 days old and that have an object_purpose of "PURCHASE".
12:  * Transactions are created asynchronous. The response time depends exclusively on the carrier's server.
13:  */
14: class CreateObject extends CommonParameter
15: {
16:     /**
17:      * ID of the Rate object for which a Label has to be obtained.
18:      * Please note that only rates that are not older than 7 days can be purchased in order to ensure up-to-date pricing.
19:      *
20:      * @return string
21:      * @throws InvalidAttributeException
22:      */
23:     public function getRate()
24:     {
25:         return $this->attributes->mustHave('rate')->asString();
26:     }
27: }
28: