ruby on rails - Non persistent ActiveRecord model attributes

Question

I want to add to an existing model some attributes that need not be persisted, or even mapped to a database column. Is there a solution to specify such thing ?

Answer 1

Of course use good old ruby's attr_accessor. In your model:

attr_accessor :foo, :bar

You'll be able to do:

object.foo = 'baz'
object.foo #=> 'baz'