Hello,
I’m surprised by the following behavior (reproduced both in Rails 7.1 and 6.1):
u = User.first
u.first_name = 'Joe'
u.update last_name: 'Doe'
# both first_name and last_name are updated in the DB, not only last_name
I was not expecting first_name
to be updated in the DB.
I think at least it should be mentioned in the official documentation update (ActiveRecord::Base) - APIdock and Active Record Basics — Ruby on Rails Guides.
Wdyt?