从Magento的运输轨道活动中获取跟踪ID

Question

我试图从Magento 1.9.0.1中的sales_order_shipment_track_save_after事件中获取跟踪号。由于某些原因，该事件似乎不包括发货，因为$observer->getEvent()->getShipment()返回NULL。我正在使用错误的事件吗？

这些是我代码的相关部分：

config.xml（模块）

<events>
  <sales_order_shipment_track_save_after>
    <observers>
      <pixelstore_sms>
        <type>model</type>
        <class>pixelstore_sms/observer</class>
        <method>shipments</method>
      </pixelstore_sms>
    </observers>
  </sales_order_shipment_track_save_after>
</events>

observer.php（模型）

public function shipments($observer) {
    $event = $observer->getEvent();
    $shipment = $event->getShipment();
    if (!$shipment) {
        Mage::log('shipments event did not contain shipment', null, 'track.log');
        return false;
    }
    // We never reach this far
    $trackings = $shipment->getAllTracks();
    $tracking = end($trackings);
    $trackingId = $tracking->getNumber();
    // Here I would prefer to have the tracking ID in $trackingId
}

您可能已经猜到的，if语句匹配。get_class()表明观察者是Varien_Event_Observer。

我是在观察错误的事件，还是我应该调用其他方法来获取跟踪ID？

Answer 1

我发现该事件包含键track下的Mage_Sales_Model_Order_Shipment_Track对象。这意味着我可以使用$event->getData('track')，$event['track']或仅$event->getTrack()从活动中获取它。因此，这最终解决了我的问题：

public function shipments(Varien_Event_Observer $observer) {
  $event = $observer->getEvent();
  $track = $event->getTrack();
  $trackingId = $track->getNumber();
  // The shipment itself can be found in the track object,
  // and the order inside the shipment object:
  $shipment = $track->getShipment();
  $order = $shipment->getOrder();
}

这都是对实际事件中包含的内容的误解。

Answer 2

即使是基本观察者，也应该能够检索订单对象。

public function shipments(Varien_Event_Observer $observer) {
$event = $observer->getEvent();
$shipment = $event->getShipment();
if (!$shipment) {
Mage::log('shipments event did not contain shipment', null, 'track.log');
return false;
}
// We never reach this far
$trackingId = $observer->getOrder()->getTrackingNumbers();
// Here I would prefer to have the tracking ID in $trackingId
}