From 318e84883a413274c3dc6dccd8f0998e8897fe40 Mon Sep 17 00:00:00 2001
From: Oliver Walters <oliver.henry.walters@gmail.com>
Date: Tue, 1 Feb 2022 15:51:38 +1100
Subject: [PATCH 1/2] Adds a warning if no build outputs are created

---
 InvenTree/build/templates/build/build_base.html | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/InvenTree/build/templates/build/build_base.html b/InvenTree/build/templates/build/build_base.html
index ae6ea6d4d3..7340f1486d 100644
--- a/InvenTree/build/templates/build/build_base.html
+++ b/InvenTree/build/templates/build/build_base.html
@@ -90,6 +90,11 @@ src="{% static 'img/blank_image.png' %}"
 </table>
 
 <div class='info-messages'>
+    {% if not build.has_build_outputs %}
+    <div class='alert alert-block alert-danger'>
+        {% trans "No build outputs have been created for this build order" %}<br>
+    </div>
+    {% endif %}
     {% if build.sales_order %}
     <div class='alert alert-block alert-info'>
         {% object_link 'so-detail' build.sales_order.id build.sales_order as link %}

From 00d7cf88e8957eb823dff8c0c525503d412ca31d Mon Sep 17 00:00:00 2001
From: Oliver Walters <oliver.henry.walters@gmail.com>
Date: Tue, 1 Feb 2022 15:58:18 +1100
Subject: [PATCH 2/2] Throw validation error if no build outputs have been
 started

---
 InvenTree/build/models.py      | 3 +++
 InvenTree/build/serializers.py | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/InvenTree/build/models.py b/InvenTree/build/models.py
index 8cad93352b..0eeffd107d 100644
--- a/InvenTree/build/models.py
+++ b/InvenTree/build/models.py
@@ -437,6 +437,9 @@ class Build(MPTTModel, ReferenceIndexingMixin):
     def output_count(self):
         return self.build_outputs.count()
 
+    def has_build_outputs(self):
+        return self.output_count > 0
+
     def get_build_outputs(self, **kwargs):
         """
         Return a list of build outputs.
diff --git a/InvenTree/build/serializers.py b/InvenTree/build/serializers.py
index fb34a40a16..2508b02927 100644
--- a/InvenTree/build/serializers.py
+++ b/InvenTree/build/serializers.py
@@ -284,6 +284,9 @@ class BuildCompleteSerializer(serializers.Serializer):
         if build.incomplete_count > 0:
             raise ValidationError(_("Build order has incomplete outputs"))
 
+        if not build.has_build_outputs():
+            raise ValidationError(_("No build outputs have been created for this build order"))
+
         return data
 
     def save(self):