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In my Magento 1.9 installation I have an observer that observes the event sales_order_invoice_pay. When this event triggers I'm attempting to store the invoice's ID in a custom model I've created.

Here's how I'm getting the invoice from the event: $invoice = $observer->getEvent()->getInvoice();

However, when I attempt this using: getId(), getData('entity_id'), getIncrementId(), or getOrigData('entity_id'), I receive a null value.

It's important for me to store this specific invoice id as I'm using it later to load that invoice and create a shipment for items invoiced.

Is there anyway for me to get the ID?

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In your observer method you can do:

$invoice = $observer->getEvent()->getInvoice();

From this variable you get all the invoice data

  • Hi, Sorry for not being specific enough in my question, but I'm already getting that from the observer. The problem is that getting the id from that object is returning null – Ryan Cady Nov 4 '16 at 20:34
  • @RyanScottCady did you try using sales_order_invoice_save_after ? – Raphael at Digital Pianism Nov 4 '16 at 20:45
  • That event isn't available in Magento 1.9. Even if it was, that event would not be a good way as it updates every time the invoice saves, NOT when it's paid – Ryan Cady Nov 4 '16 at 20:51
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    @RyanScottCady it should work with this one and getId though. Are you sure your observer is getting called? – Raphael at Digital Pianism Nov 5 '16 at 7:31
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    I'll have to try it again. Once I find out I'll let ya know! – Ryan Cady Nov 6 '16 at 10:00
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This is the same case as happened to me here

You'd observe sales_order_invoice_save_commit_after event, at this point invoice should be totally saved, so you could get entity_id value

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