Build API improvements (#3581)

* Improve build order lookup

* Query efficiency improvements

* Lazy load build allocation table

* API defaults ensure consistent behaviour

InvenTree/build/api.py

@@ -365,6 +365,7 @@ class BuildItemList(ListCreateAPI):
             kwargs['part_detail'] = str2bool(params.get('part_detail', False))
             kwargs['build_detail'] = str2bool(params.get('build_detail', False))
             kwargs['location_detail'] = str2bool(params.get('location_detail', False))
+            kwargs['stock_detail'] = str2bool(params.get('stock_detail', True))
         except AttributeError:
             pass
 
@@ -372,13 +373,19 @@ class BuildItemList(ListCreateAPI):
 
     def get_queryset(self):
         """Override the queryset method, to allow filtering by stock_item.part."""
-        query = BuildItem.objects.all()
+        queryset = BuildItem.objects.all()
 
-        query = query.select_related('stock_item__location')
-        query = query.select_related('stock_item__part')
-        query = query.select_related('stock_item__part__category')
+        queryset = queryset.select_related(
+            'bom_item',
+            'bom_item__sub_part',
+            'build',
+            'install_into',
+            'stock_item',
+            'stock_item__location',
+            'stock_item__part',
+        )
 
-        return query
+        return queryset
 
     def filter_queryset(self, queryset):
         """Customm query filtering for the BuildItem list."""

InvenTree/build/serializers.py

@@ -856,6 +856,7 @@ class BuildItemSerializer(InvenTreeModelSerializer):
         build_detail = kwargs.pop('build_detail', False)
         part_detail = kwargs.pop('part_detail', False)
         location_detail = kwargs.pop('location_detail', False)
+        stock_detail = kwargs.pop('stock_detail', False)
 
         super().__init__(*args, **kwargs)
 
@@ -868,6 +869,9 @@ class BuildItemSerializer(InvenTreeModelSerializer):
         if not location_detail:
             self.fields.pop('location_detail')
 
+        if not stock_detail:
+            self.fields.pop('stock_item_detail')
+
     class Meta:
         """Serializer metaclass"""
         model = BuildItem

InvenTree/build/templates/build/detail.html

@@ -455,7 +455,9 @@ function loadUntrackedStockTable() {
     );
 }
 
-loadUntrackedStockTable();
+onPanelLoad('allocate', function() {
+    loadUntrackedStockTable();
+});
 
 {% endif %}