Ruby SuperModule Comes To The Rescue!!

Tired of ActiveSupport::Concern and Ruby's modules not allowing you to mix in class methods easily? Well, worry no more! SuperModule comes to the rescue!



SuperModule allows defining class methods and method invocations the same way a super class does without using def included(base).

This succeeds ActiveSupport::Concern by offering lighter purely idiomatic Ruby syntax and simpler module dependency support.

1. Just include SuperModule at the top of a module definition:

module UserIdentifiable
  include SuperModule

  belongs_to :user
  validates :user_id, presence: true

  def self.most_active_user
    User.find_by_id(select('count(id) as head_count, user_id').group('user_id').order('count(id) desc').first.user_id)
  end

  def slug
    "#{self.class.name}_#{user_id}"
  end
end

2. Mix newly defined module into a class or another super module

class ClubParticipation < ActiveRecord::Base
  include UserIdentifiable
end
class CourseEnrollment < ActiveRecord::Base
  include UserIdentifiable
end
module Accountable
  include SuperModule
  include UserIdentifiable
end
class Activity < ActiveRecord::Base
  include Accountable
end

3. And start using by invoking class methods or instance methods

CourseEnrollment.most_active_user
ClubParticipation.most_active_user
Activity.last.slug
ClubParticipation.create(club_id: club.id, user_id: user.id).slug
CourseEnrollment.new(course_id: course.id).valid?

More details and examples are available over here: https://github.com/AndyObtiva/super_module

And the SuperModule RubyGem lives over here: http://rubygems.org/gems/super_module

Enjoy!!