Just looking at the guide for upgrading an app to rails 5 , and
have a question
In section 2.2 it says the ActiveRecord models now inherit from
ApplicationRecord, so when upgrading one should create
class ApplicationRecord < ActiveRecord::Base
self.abstract_class = true
However it does not say that one should modify existing models to
derive from this class. I think this is just an omission in the docs,
is that right?
I note that in section 2.4 talking about a similar change to ActiveJob
that it /does/ say to change the base class for existing jobs.