Is there is a way to change the user level, something like
user.set_rank(:level => 4) ?
I need to change the user levels but redifining rank rules and running what is suggested here Can the merit gem recalculate reputation and re-evaluate badges and ranks? does not work.
¿any ideas?
There is. You can do user.update_column :level, 4 and it does so.
Further discussion in https://github.com/tute/merit/issues/190.