Ruby on Rails

 Hello all.

 In this example, as i understand that included block is running when Exclaimable module is included in Person and after a Person class methods are 'initialized'

 

require 'active_support/concern'

 

module Exclaimable
  extend ActiveSupport::Concern
  included do
    self.new.hello
  end
end

 

class Person
  include Exclaimable
  def hello
    puts 'person hello'
  end
end

Output: Exception: NoMethodError: undefined method `hello' for #<Person:0x00000103cbdcd0>

But  i see that, Person class doesn't have hello method, why ? Please, help !

So, i can't understand - what diifference between

 

included do 
 self.new.hello
end

  

and class method:

 

self.included(base)
 base.new.hello
end

Both code get same error ( see above )