Fixes for build item allocation rendering

InvenTree/InvenTree/version.py

@@ -16,9 +16,13 @@ Increment thi API version number whenever there is a significant change to the A
 v3 -> 2021-05-22:
     - The updated StockItem "history tracking" now uses a different interface
 
+v4 -> 2021-06-01
+    - BOM items can now accept "variant stock" to be assigned against them
+    - Many slight API tweaks were needed to get this to work properly!
+
 """
 
-INVENTREE_API_VERSION = 3
+INVENTREE_API_VERSION = 4
 
 
 def inventreeInstanceName():

InvenTree/build/models.py

@@ -30,6 +30,7 @@ from InvenTree.models import InvenTreeAttachment
 import common.models
 
 import InvenTree.fields
+import InvenTree.helpers
 
 from stock import models as StockModels
 from part import models as PartModels
@@ -1280,6 +1281,18 @@ class BuildItem(models.Model):
             # Simply remove the items from stock
             item.take_stock(self.quantity, user)
 
+    def getStockItemThumbnail(self):
+        """
+        Return qualified URL for part thumbnail image
+        """
+
+        if self.stock_item and self.stock_item.part:
+            return InvenTree.helpers.getMediaUrl(self.stock_item.part.image.thumbnail.url)
+        elif self.bom_item and self.stock_item.sub_part:
+            return InvenTree.helpers.getMediaUrl(self.bom_item.sub_part.image.thumbnail.url)
+        else:
+            return InvenTree.helpers.getBlankThumbnail()
+
     build = models.ForeignKey(
         Build,
         on_delete=models.CASCADE,

InvenTree/build/serializers.py

@@ -97,9 +97,10 @@ class BuildSerializer(InvenTreeModelSerializer):
 class BuildItemSerializer(InvenTreeModelSerializer):
     """ Serializes a BuildItem object """
 
+    bom_part = serializers.IntegerField(source='bom_item.sub_part.pk', read_only=True)
     part = serializers.IntegerField(source='stock_item.part.pk', read_only=True)
     part_name = serializers.CharField(source='stock_item.part.full_name', read_only=True)
-    part_image = serializers.CharField(source='stock_item.part.image', read_only=True)
+    part_thumb = serializers.CharField(source='getStockItemThumbnail', read_only=True)
     stock_item_detail = StockItemSerializerBrief(source='stock_item', read_only=True)
 
     quantity = serializers.FloatField()
@@ -108,11 +109,12 @@ class BuildItemSerializer(InvenTreeModelSerializer):
         model = BuildItem
         fields = [
             'pk',
+            'bom_part',
             'build',
             'install_into',
             'part',
             'part_name',
-            'part_image',
+            'part_thumb',
             'stock_item',
             'stock_item_detail',
             'quantity'

InvenTree/templates/js/build.js

@@ -372,7 +372,7 @@ function loadBuildOutputAllocationTable(buildInfo, output, options={}) {
                         data.forEach(function(item) {
 
                             // Group BuildItem objects by part
-                            var part = item.part;
+                            var part = item.bom_part || item.part;
                             var key = parseInt(part);
 
                             if (!(key in allocations)) {
@@ -461,6 +461,16 @@ function loadBuildOutputAllocationTable(buildInfo, output, options={}) {
                 data: row.allocations,
                 showHeader: true,
                 columns: [
+                    {
+                        field: 'part',
+                        title: '{% trans "Part" %}',
+                        formatter: function(value, row) {
+
+                            var html = imageHoverIcon(row.part_thumb);
+                            html += renderLink(row.part_name, `/part/${value}/`);
+                            return html;
+                        }
+                    },
                     {
                         width: '50%',
                         field: 'quantity',