Add a query param `?include_pricing' to the BomItem API

- Set this to false to disable pricing info in BOM
- Drastic reduction in query speed

InvenTree/part/api.py

@@ -1100,6 +1100,12 @@ class BomList(generics.ListCreateAPIView):
         except AttributeError:
             pass
 
+        try:
+            # Include or exclude pricing information in the serialized data
+            kwargs['include_pricing'] = str2bool(self.request.GET.get('include_pricing', True))
+        except AttributeError:
+            pass
+
         # Ensure the request context is passed through!
         kwargs['context'] = self.get_serializer_context()
 
@@ -1141,6 +1147,19 @@ class BomList(generics.ListCreateAPIView):
             except (ValueError, Part.DoesNotExist):
                 pass
 
+        include_pricing = str2bool(params.get('include_pricing', True))
+
+        if include_pricing:
+            queryset = self.annotate_pricing(queryset)
+
+        return queryset
+
+    
+    def annotate_pricing(self, queryset):
+        """
+        Add part pricing information to the queryset
+        """
+
         # Annotate with purchase prices
         queryset = queryset.annotate(
             purchase_price_min=Min('sub_part__stock_items__purchase_price'),

InvenTree/part/serializers.py

@@ -419,6 +419,7 @@ class BomItemSerializer(InvenTreeModelSerializer):
 
         part_detail = kwargs.pop('part_detail', False)
         sub_part_detail = kwargs.pop('sub_part_detail', False)
+        include_pricing = kwargs.pop('include_pricing', False)
 
         super(BomItemSerializer, self).__init__(*args, **kwargs)
 
@@ -428,6 +429,14 @@ class BomItemSerializer(InvenTreeModelSerializer):
         if sub_part_detail is not True:
             self.fields.pop('sub_part_detail')
 
+        if not include_pricing:
+            # Remove all pricing related fields
+            self.fields.pop('price_range')
+            self.fields.pop('purchase_price_min')
+            self.fields.pop('purchase_price_max')
+            self.fields.pop('purchase_price_avg')
+            self.fields.pop('purchase_price_range')
+
     @staticmethod
     def setup_eager_loading(queryset):
         queryset = queryset.prefetch_related('part')