Adds API endpoint for installing stock items into other stock items

- Requires more filtering for the Part API
- Adds more BOM related functionality for Part model
- Removes old server-side form

InvenTree/part/api.py

@@ -995,6 +995,24 @@ class PartList(generics.ListCreateAPIView):
             except (ValueError, Part.DoesNotExist):
                 pass
 
+        # Filter only parts which are in the "BOM" for a given part
+        in_bom_for = params.get('in_bom_for', None)
+
+        if in_bom_for is not None:
+            try:
+                in_bom_for = Part.objects.get(pk=in_bom_for)
+
+
+                # Extract a list of parts within the BOM
+                bom_parts = in_bom_for.get_parts_in_bom()
+                print("bom_parts:", bom_parts)
+                print([p.pk for p in bom_parts])
+
+                queryset = queryset.filter(pk__in=[p.pk for p in bom_parts])
+
+            except (ValueError, Part.DoesNotExist):
+                pass
+
         # Filter by whether the BOM has been validated (or not)
         bom_valid = params.get('bom_valid', None)