ActiveRecord::Base extending with ClassMethods module

Vote count:

0

I have a code like this in rails console:

module Taggable
  extend ActiveSupport::Concern
    module ClassMethods
      def taggable?
        false
      end
    end
end

When I run: ActiveRecord::Base.send :include, Taggable. I see that the method taggable? will become instance_methods of singleton_class: ActiveRecord::Base.singleton_class.instance_methods.include? :taggable? # => true.

But when I run ActiveRecord::Base.extend Taggable. I don't know where is the method taggable? in? ActiveRecord::Base.singleton_class.methods.include? :taggable? # => false

Please help me understand it.

asked 29 secs ago

Tran Quagvu

1

ActiveRecord::Base extending with ClassMethods module