From ed10f467695e2590f0f4863b8400a74d450efbfd Mon Sep 17 00:00:00 2001
From: Elvis <xrockmanx37@gmail.com>
Date: Wed, 13 Dec 2023 17:37:43 -0500
Subject: [PATCH] reference from shipment

---
 purchase.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/purchase.py b/purchase.py
index 88225d0..807107f 100644
--- a/purchase.py
+++ b/purchase.py
@@ -162,6 +162,10 @@ class Purchase(metaclass=PoolMeta):
             return
         invoice.reference = self.reference
         invoice.description = self.description
+        if self.invoice_method == 'shipment' and self.moves:
+            for move in self.moves:
+                invoice.reference = move.shipment.reference
+                break
         invoice.save()
         return invoice