From: Sander Land <sander.land@...>
Date: 2006-09-13T04:31:17+09:00
Subject: Re: inheritance and super function

On 9/12/06, Surendra Singhi <efuzzyone@netscape.net> wrote:
> Now, in the function test in Class C, I want to call the test method defined
> in class A, by passing B's test method.
>
> How can I do this, just using plain 'super' doesn't work? Is it possible to do
> this?

Use instance_method and bind.

module Kernel
  def super_n(n=1)
    self.class.ancestors[n].instance_method(caller.first[/`(.*)'/][1..-2]).bind(self).call
  end
end

class C < B
 def test
   puts "I am C"
   A.instance_method(:test).bind(self).call
   self.class.superclass.superclass.instance_method(:test).bind(self).call
   self.class.ancestors[2].instance_method(:test).bind(self).call
   super_n(1)
   super_n(2)
 end
end

C.test.new

=>
I am C
I am A
I am A
I am A
I am B
I am A