Removed ternary operator for clarity.

Author: jpwatts

positions/fields.py

@@ -55,7 +55,9 @@ def pre_save(self, model_instance, add):
         current, updated = getattr(model_instance, cache_name)
 
         if add:
-            current, updated = None, updated if updated is not None else current
+            if updated is None:
+                updated = current
+            current = None
 
         # existing instance, position not modified; no cleanup required
         if current is not None and updated is None: