How to override a column in Rails model?

Question

I have a model for one of my database tables. I want to override the column name for that particular table. How would I achieve it.

For example, let my table be call

Answer 1

I'm a little late to the party here, but a really elegant way to do it is to simply use super

class Dummy < ApplicationRecord
  def col_a
    super % 10 === 0 ? 0 : super
  end
end