Order parts directly from a build

InvenTree/build/templates/build/allocate.html

@@ -68,6 +68,14 @@ InvenTree | Allocate Parts
         location.href = "{% url 'build-allocate' build.id %}?edit=1";
     });
 
+    $("#btn-order-parts").click(function() {
+        launchModalForm("/order/purchase-order/order-parts/", {
+            data: {
+                build: {{ build.id }},
+            },
+        });
+    });
+
     {% endif %}
 
 {% endblock %}

InvenTree/build/templates/build/allocate_view.html

@@ -3,6 +3,7 @@
 <div id='#build-item-toolbar'>
     <div class='btn-group'>
         <button class='btn btn-primary' type='button' id='btn-allocate' title='Allocate Stock'>Allocate</button>
+        <button class='btn btn-primary' type='button' id='btn-order-parts' title='Order Parts'>Order Parts</button>
     </div>
 </div>
 

InvenTree/order/views.py

@@ -11,6 +11,7 @@ from django.views.generic.edit import FormMixin
 from django.forms import HiddenInput
 
 from .models import PurchaseOrder, PurchaseOrderLineItem
+from build.models import Build
 from company.models import Company, SupplierPart
 from stock.models import StockItem
 from part.models import Part
@@ -211,6 +212,19 @@ class OrderParts(AjaxView):
             for part in parts:
                 part_ids.add(part.id)
 
+        # User has provided a Build ID
+        elif 'build' in self.request.GET:
+            build_id = self.request.GET.get('build')
+            try:
+                build = Build.objects.get(id=build_id)
+
+                parts = build.part.required_parts()
+
+                for part in parts:
+                    part_ids.add(part.id)
+            except Build.DoesNotExist:
+                pass
+
         # Create the list of parts
         for id in part_ids:
             try:
@@ -220,7 +234,7 @@ class OrderParts(AjaxView):
 
             self.parts.append(part)
 
-        return self.parts
+        return sorted(self.parts, key=lambda part: part.quantity_to_order, reverse=True)
 
     def get(self, request, *args, **kwargs):