From d1a2ed9af17801aceec415fa56d343ff527ff29d Mon Sep 17 00:00:00 2001
From: Adam Walsh <adamtwalsh@gmail.com>
Date: Mon, 21 Jun 2021 11:20:43 -0400
Subject: [PATCH] Fix supplier part view/edit without a manufacturer

Fixes the following issues when a supplier part was created with an MPN but no manufacturer was assigned:
- Viewing a supplier part stock item
- Editing a supplier part stock item
---
 InvenTree/company/views.py                     | 3 ++-
 InvenTree/stock/templates/stock/item_base.html | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/InvenTree/company/views.py b/InvenTree/company/views.py
index b2f655737f..74a583710a 100644
--- a/InvenTree/company/views.py
+++ b/InvenTree/company/views.py
@@ -623,7 +623,8 @@ class SupplierPartEdit(AjaxUpdateView):
         supplier_part = self.get_object()
 
         if supplier_part.manufacturer_part:
-            initials['manufacturer'] = supplier_part.manufacturer_part.manufacturer.id
+            if supplier_part.manufacturer_part.manufacturer:
+                initials['manufacturer'] = supplier_part.manufacturer_part.manufacturer.id
             initials['MPN'] = supplier_part.manufacturer_part.MPN
 
         return initials
diff --git a/InvenTree/stock/templates/stock/item_base.html b/InvenTree/stock/templates/stock/item_base.html
index 7aebd51452..bf9d10590f 100644
--- a/InvenTree/stock/templates/stock/item_base.html
+++ b/InvenTree/stock/templates/stock/item_base.html
@@ -350,7 +350,12 @@
     <tr>
         <td><span class='fas fa-industry'></span></td>
         <td>{% trans "Manufacturer" %}</td>
-        <td><a href="{% url 'company-detail' item.supplier_part.manufacturer_part.manufacturer.id %}">{{ item.supplier_part.manufacturer_part.manufacturer.name }}</a></td>
+        {% if item.supplier_part.manufacturer_part.manufacturer %}
+            <td><a href="{% url 'company-detail' item.supplier_part.manufacturer_part.manufacturer.id %}">{{ item.supplier_part.manufacturer_part.manufacturer.name }}</a></td>
+        {% else %}
+            <td><i>{% trans "No manufacturer set" %}</i></td>
+        {% endif %}
+
     </tr>
     <tr>
         <td><span class='fas fa-hashtag'></span></td>