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

You can override the col_a method. Use the read_attribute method to read the value in database. Something like this:

def col_a
  if self.read_attribute(:col_a).to_s.end_with?('0')
    0
  else
    self.read_attribute(:col_a)
  end
end