Rails - Nov 2010 - Inheritance alternative

I have to objects with common functionalities and a lot of difference. 
So I want that each have his own table but inherit the common 
functionalities from a parent class. How can I do this in Rails ?

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> I have to objects with common functionalities and a lot of difference. So I
want that each have his own table but inherit the common functionalities from a
parent class. How can I do this in Rails ?
Polymorphic association might be the way to go...

See the docs for more...

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How about just creating your own module and including that in your
classes?

# lib/common_methods.rb

module CommonMethods
  def all_get_this_method
    ...
  end
end

app/models/company.rb

require ''common_methods''
class Company < Active::Record::Base
  include Commonmethods
  ...
end

config/application.rb

module Yourapp
  class Application < Rails::Application
    config.autoload_paths += %W(#{config.root}/lib)
    ...

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Matias Fierro wrote in post #959653:
> I have to objects with common functionalities and a lot of difference.
> So I want that each have his own table but inherit the common
> functionalities from a parent class. How can I do this in Rails ?
class GenericModel < ActiveRecord::Base
  self.abstract_class = true

  # define all the ''common'' methods you want in this class
  # (including the default behaviors for common methods)
  # I use methods in this class for providing all my cache
  # fragment management functionality, rendering model instances
  # to PDFs, etc, etc
end

class Person < GenericModel
  # person-specific methods, and overrides of common methods
  # from GenericModel
end

class Address < GenericModel
  # address-specific methods, and overrides of common methods
  # from GenericModel
end

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It sounds like you may want to use Multiple Table Inheritance in this
case.  I was looking to set up something similar a while back and came
across this article:

http://mediumexposure.com/multiple-table-inheritance-active-record/

Hope that helps you out!

On Nov 5, 1:32 pm, Philip Hallstrom <phi...-LSG90OXdqQE@public.gmane.org>
wrote:
> > I have to objects with common functionalities and a lot of difference.
So I want that each have his own table but inherit the common functionalities
from a parent class. How can I do this in Rails ?
>
> Polymorphic association might be the way to go...
>
> See the docs for more...
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