From: Sean O'Halpin <sean.ohalpin@...>
Date: 2009-03-31T07:07:19+09:00
Subject: Re: Getting the current module(s), class name and method in Ruby 1.9

On Mon, Mar 30, 2009 at 10:32 PM, Iñaki Baz Castillo <ibc@aliax.net> wrote:
> Hi, first of all I'm sorry since I already did this question some time ago
> (but I ca't find it now).
>
> Basically I want the following:
>
> ---------------
> module MyModule
>
>  class MyClass
>    def show_log
>      puts "I'm here: ###### FIXME ######"
>    end
>  end
>
> end
>
>
> my_class = MyModule::MyClass.new
> my_class.show_log
> => I'm here: MyModule::MyClass#show_log
> ---------------
>
> When I did this question I remember that it was not possible with Ruby 1.8 but
> it was feasible in Ruby 1.9.
>
> Could you please show me how to get it?
> Thanks a lot.

Hi,

The following works in both 1.8.6 and 1.9.1 (calling_method is by
Robert Klemme - see ruby-talk 205150 & 205950).

module Kernel
  private
  def calling_method(level = 1)
    caller[level] =~ /`([^']*)'/ and $1
  end

  def this_method
    calling_method
  end
end

module MyModule
  class MyClass
    def show_log
      puts "#{self.class}.#{this_method}"
    end
  end
end

MyModule::MyClass.new.show_log # => MyModule::MyClass.show_log

Regards,
Sean