Create an initial stockitem output when a new build is created

InvenTree/InvenTree/views.py

@@ -316,13 +316,13 @@ class AjaxCreateView(AjaxMixin, CreateView):
     - Handles form validation via AJAX POST requests
     """
 
-    def pre_save(self, **kwargs):
+    def pre_save(self, form, request, **kwargs):
         """
         Hook for doing something before the form is validated
         """
         pass
 
-    def post_save(self, new_object, **kwargs):
+    def post_save(self, new_object, request, **kwargs):
         """
         Hook for doing something with the created object after it is saved
         """
@@ -354,9 +354,9 @@ class AjaxCreateView(AjaxMixin, CreateView):
 
         if self.form.is_valid():
 
-            self.pre_save()
+            self.pre_save(self.form, request)
             self.object = self.form.save()
-            self.post_save(self.object)
+            self.post_save(self.object, request)
 
             # Return the PK of the newly-created object
             data['pk'] = self.object.pk

InvenTree/build/migrations/0024_auto_20201020_1144.py

@@ -0,0 +1,20 @@
+# Generated by Django 3.0.7 on 2020-10-20 11:44
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0051_bomitem_optional'),
+        ('build', '0023_auto_20201020_1009'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='build',
+            name='part',
+            field=models.ForeignKey(help_text='Select part to build', limit_choices_to={'active': True, 'assembly': True, 'virtual': False}, on_delete=django.db.models.deletion.CASCADE, related_name='builds', to='part.Part', verbose_name='Part'),
+        ),
+    ]

InvenTree/build/models.py

@@ -111,7 +111,6 @@ class Build(MPTTModel):
         on_delete=models.CASCADE,
         related_name='builds',
         limit_choices_to={
-            'is_template': False,
             'assembly': True,
             'active': True,
             'virtual': False,
@@ -226,6 +225,24 @@ class Build(MPTTModel):
 
         return new_ref
 
+    def createInitialStockItem(self, user):
+        """
+        Create an initial output StockItem to be completed by this build.
+        """
+
+        output = StockModels.StockItem.objects.create(
+            part=self.part,  # Link to the parent part
+            location=None,  # No location (yet) until it is completed
+            quantity=self.quantity,
+            batch='',  # The 'batch' code is not set until the item is completed
+            build=self,  # Point back to this build
+            is_building=True,  # Mark this StockItem as building
+        )
+
+        output.save()
+
+        # TODO - Add a transaction note to the new StockItem
+
     @transaction.atomic
     def cancelBuild(self, user):
         """ Mark the Build as CANCELLED

InvenTree/build/templates/build/detail.html

@@ -33,7 +33,20 @@
         {% if build.take_from %}
         <a href="{% url 'stock-location-detail' build.take_from.id %}">{{ build.take_from }}</a>
         {% else %}
-        {% trans "Stock can be taken from any available location." %}
+        <i>{% trans "Stock can be taken from any available location." %}</i>
+        {% endif %}
+    </td>
+</tr>
+<tr>
+    <td><span class='fas fa-map-marker-alt'></span></td>
+    <td>{% trans "Destination" %}</td>
+    <td>
+        {% if build.destination %}
+        <a href="{% url 'stock-location-detail' build.destination.id %}">
+            {{ build.destination }}
+        </a>
+        {% else %}
+        <i>{% trans "Destination location not specified" %}</i>
         {% endif %}
     </td>
 </tr>

InvenTree/build/views.py

@@ -439,15 +439,14 @@ class BuildCreate(AjaxCreateView):
         return {
             'success': _('Created new build'),
         }
-
-    def post_save(self, new_object):
+        
+    def post_save(self, new_object, request, **kwargs):
         """
-        Called immediately after the build has been created.
+        Called immediately after a new Build object is created.
         """
 
         build = new_object
-
-        print("Created:", build)
+        build.createInitialStockItem(request.user)
 
 
 class BuildUpdate(AjaxUpdateView):

InvenTree/stock/serializers.py

@@ -154,8 +154,9 @@ class StockItemSerializer(InvenTreeModelSerializer):
             'allocated',
             'batch',
             'belongs_to',
-            'customer',
+            'build',
             'build_order',
+            'customer',
             'in_stock',
             'is_building',
             'link',