From: Gordon Thiesfeld <gthiesfeld@...>
Date: 2008-02-29T02:42:11+09:00
Subject: Re: String to Class?

On Thu, Feb 28, 2008 at 11:28 AM, Aaron Turner <synfinatic@gmail.com> wrote:
> I want to be able to take a class name stored in a variable as a string like:
>
>  foo = "Foo::Bar"
>
>  and convert that to the class Foo::Bar so that I can call .new(), etc:
>
>  obj = foo.new
>
>  I know I can just do:
>
>  foo = Foo::Bar
>
>  but that doesn't solve my problem which is to accept the class name as
>  an argument on the command line from the user.
>
>  Thanks,
>  Aaron
>
>  --
>  Aaron Turner
>  http://synfin.net/
>  http://tcpreplay.synfin.net/ - Pcap editing & replay tools for Unix
>  They that can give up essential liberty to obtain a little temporary
>  safety deserve neither liberty nor safety.  -- Benjamin Franklin
>
>


I'm sure there's a better way, but:

module Foo
  class Bar

  end
end

foo = "Foo::Bar"
foo = foo.split("::").inject(Object){|s,v| s.const_get(v) }

obj = foo.new

p obj