Fix Traceback when using reaodnly_transaction decorator for objects with no __name__ (senaite#2143)

* Fix Traceback when using decorator for objects with no __name__

* Changelog

Author: xispa

CHANGES.rst

@@ -5,6 +5,7 @@ Changelog
 2.3.0 (unreleased)
 ------------------
 
+- #2143 Fix Traceback when using readonly decorator for objects w/o __name__
 - #2140 Allow to enable/disable analysis categories for samples
 - #2137 Dynamic Workflow Menu
 - #2139 Fix LabClerk cannot create partitions from received samples

src/senaite/core/decorators/__init__.py

@@ -16,7 +16,7 @@ def readonly_transaction(func):
     @wraps(func)
     def decorator(self, *args, **kwargs):
         logger.info("*** READONLY TRANSACTION: '{}.{}' ***".
-                    format(self.__class__.__name__, self.__name__))
+                    format(self.__class__.__name__, func.__name__))
         tx = transaction.get()
         tx.doom()
         return func(self, *args, **kwargs)