From: "Pieter V." <pvande@...>
Date: 2009-05-21T00:03:35+09:00
Subject: Re: Super super ?

Depending on your purpose, it may make sense to allow the caller to
specify which class to invoke the method in.  (This won't frequently
be the case, but since you're specifically looking to invoke your
Grandfather's method, it might apply here.)

--------8<-------------------------

def Grandfather
  def say_hello(klass=self.class)
    return super unless self.is_a?(klass)
    puts 'Grandfather: Hello'
  end
end

def Father < Grandfather
  def say_hello(klass=self.class)
    return super unless self.is_a?(klass)
    puts 'Father: Hello'
  end
end

def Son < Father
  def say_hello(klass=self.class)
    return super(Grandfather) unless self.is_a?(klass)
    puts 'Son: Hello'
  end
end

--------8<-------------------------

It's not a best practice, but it might prove useful enough for your case.


On Wed, May 20, 2009 at 7:46 AM, Ilan Berci <ilan.berci@gmail.com> wrote:
>
> Robert Klemme wrote:
>
> >
> > class Son < Father
> >    def say_hello
> >      Grand_father.instance_method(:say_hello).bind(self).call
> >      puts "Son : Hello"
> >    end
> > end
> >
> >
>
> Ahh.. cool! Thanks for the bind() solution, I am aware of it but it
> always falls to the back of my head.. I blame either my age, marriage,
> or kids on this one..
>
> ilan
>
>
> --
> Posted via http://www.ruby-forum.com/.
>