Where to put model “utility” functions in Ruby on Rails

Question

I have a rails app with several models.

I have a function that I want to access from several models.

What\'s the best place to put this code and how can I ma

Answer 1

In order to lessen the repetition of code, you could also create a main class which would include that module and the simply inherit from it from every model you'd like to share the behaviour.

Something like:

module Fooable
  def do_foo
  end
end

class ParentModel < ActiveRecord::Base
  include Fooable
end

class Product < ParentModel end
class User < ParentModel end
class Item < ActiveRecord::Base end

Thus, in that example, both Product and User would share the do_foo functionality and Item would not.