Python+peewee: retrieve a field after Model.save() (and trigger execution in Sqlite database)

1. In my application I work with Sqlite. In one of the tables inside database I've implemented a trigger (basically, after an insert event on the table TAB, it has to update a column named codecolumn which depends on the ID PK field)

2. In my code I create and object from a PeeweeModel previously setted

   objfromModel = Model(params....)
   
   

3. After the execution of line:

   objfromModel.save()
   
   

We hoped to get appart from the _id field generated -in fact objfromModel.id is retrieved from DB-, but also the codecolumn new field generated by the trigger execution on insert event. But objfromModel.codecolumn is None

Question: is there a trick to make on Peewee in order to recover this new field generated in database by trigger.