Auto-generate build outputs when a build is created

InvenTree/InvenTree/views.py

@@ -387,7 +387,7 @@ class AjaxCreateView(AjaxMixin, CreateView):
 
             self.pre_save(self.form, request)
             self.object = self.form.save()
-            self.post_save(new_object=self.object, request=request)
+            self.post_save(new_object=self.object, request=request, form=self.form, data=self.form.cleaned_data)
 
             # Return the PK of the newly-created object
             data['pk'] = self.object.pk

InvenTree/build/forms.py

@@ -23,6 +23,7 @@ class EditBuildForm(HelperForm):
         'reference': 'BO',
         'link': 'fa-link',
         'batch': 'fa-layer-group',
+        'serial-numbers': 'fa-hashtag',
         'location': 'fa-map-marker-alt',
     }
 
@@ -30,6 +31,12 @@ class EditBuildForm(HelperForm):
         'reference': _('Build Order reference')
     }
 
+    serial_numbers = forms.CharField(
+        label=_('Serial Numbers'),
+        help_text=_('Serial numbers for build outputs'),
+        required=False,
+    )
+
     class Meta:
         model = Build
         fields = [
@@ -38,6 +45,7 @@ class EditBuildForm(HelperForm):
             'part',
             'quantity',
             'batch',
+            'serial_numbers',
             'take_from',
             'destination',
             'parent',

InvenTree/build/models.py

@@ -24,6 +24,7 @@ from mptt.models import MPTTModel, TreeForeignKey
 
 from InvenTree.status_codes import BuildStatus
 from InvenTree.helpers import increment, getSetting, normalize
+from InvenTree.helpers import ExtractSerialNumbers
 from InvenTree.validators import validate_build_order_reference
 from InvenTree.models import InvenTreeAttachment
 
@@ -269,21 +270,46 @@ class Build(MPTTModel):
 
         return new_ref
 
-    def createInitialStockItem(self, user):
+    def createInitialStockItem(self, serial_numbers, 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
-        )
+        if self.part.trackable:
+            # Trackable part? Create individual build outputs?
 
-        output.save()
+            # Serial numbers specified for the build?
+            if serial_numbers:
+                serials = ExtractSerialNumbers(serial_numbers, self.quantity)
+            else:
+                serials = [None] * self.quantity
+
+            for serial in serials:
+                output = StockModels.StockItem.objects.create(
+                    part=self.part,
+                    location=self.destination,
+                    quantity=1,
+                    batch=self.batch,
+                    serial=serial,
+                    build=self,
+                    is_building=True
+                )
+
+                output.save()
+
+        else:
+            # Create a single build output
+
+            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
 

InvenTree/build/views.py

@@ -512,6 +512,18 @@ class BuildCreate(AjaxCreateView):
     ajax_template_name = 'modal_form.html'
     role_required = 'build.add'
 
+    def get_form(self):
+        form = super().get_form()
+
+        if form['part'].value():
+            part = Part.objects.get(pk=form['part'].value())
+
+            # Part is not trackable - hide serial numbers
+            if not part.trackable: 
+                form.fields['serial_numbers'].widget = HiddenInput()
+
+        return form
+
     def get_initial(self):
         """ Get initial parameters for Build creation.
 
@@ -547,6 +559,33 @@ class BuildCreate(AjaxCreateView):
         return {
             'success': _('Created new build'),
         }
+
+    def validate(self, cleaned_data, **kwargs):
+        """
+        Perform extra form validation.
+
+        - If part is trackable, check that either batch or serial numbers are calculated
+
+        By this point form.is_valid() has been executed
+        """
+
+        part = cleaned_data['part']
+
+        if part.trackable:
+            # For a trackable part, either batch or serial nubmber must be specified
+            if not cleaned_data['batch'] and not cleaned_data['serial_numbers']:
+                raise ValidationError({
+                    'part': _('Trackable part must have either batch or serial number specified')
+                }) 
+
+            # If serial numbers are set...
+            serials = cleaned_data['serial_numbers']
+            quantity = cleaned_data['quantity']
+
+            extracted = ExtractSerialNumbers(serials, quantity)
+
+        # Ok, no errors...
+        return True
         
     def post_save(self, **kwargs):
         """
@@ -555,8 +594,11 @@ class BuildCreate(AjaxCreateView):
 
         build = kwargs['new_object']
         request = kwargs['request']
+        data = kwargs['data']
+
+        serials = data['serial_numbers']
         
-        build.createInitialStockItem(request.user)
+        build.createInitialStockItem(serials, request.user)
 
 
 class BuildUpdate(AjaxUpdateView):