From: Rick DeNatale <rick.denatale@...>
Date: 2008-05-17T07:35:30+09:00
Subject: Re: Class methods in modules

On Fri, May 16, 2008 at 3:36 PM, Florian Gilcher <flo@andersground.net> wrote:

> If you wish to keep class an instance methods separated, it is somewhat
> popular
> to define them in different modules:
>
> module FormatHelper
>  module ClassMethods
>     def foo
>        #####
>     end
>
>     #some more methods
>  end
>
>  module InstanceMethods
>     def foo
>        #####
>     end
>
>     #some more methods
>  end
> end
>
> class D
>   include FormatHelper::InstanceMethods
>   extend FormatHelper::ClassMethods
> end

Or for a module, which adds both class and instance methods, the
popular way is something like this:

module FormatHelper

     def self.included(class_or_module)
           class_or_module.extend(ClassMethods)
     end

     module ClassMethods
         ... class methods go here
     end

     .. instance methods go here
end

Then when a class includes the module it gets both sets of methods.

-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/