From: nobu.nokada@...
Date: 2001-12-15T00:19:00+09:00
Subject: [ruby-talk:28511] Re: Package Naming (loading)

At Fri, 14 Dec 2001 23:59:16 +0900,
Barnett, Aaron <aaron.barnett@commerceone.com> wrote:
> my concerns on this topic are not along the lines of move files, i agree
> with the comments below.  mine are more along the lines of dynammic loading,
> in the 'plugins' sense.  in java i can load a class and get an instance of
> it if i know its name, having only a string containing the name to guide me.
> this makes me happy.  in ruby, i may know that i want a class called 'Foo',
> but i have know idea where it is.  it may be in Foo.rb, or foo.rb, or
> utils.rb...
> 
> i have an application that uses subclasses of a class called Action.  the
> subclass name is given in a action mapping file.  

Where action_name is the class name and actions[action_name]
means the library name to be loaded,

  require actions[action_name]
  action = Object
  action_name.split("::").each do |name|
    action = action.const_get(name)
  end
  action


Nobu Nakada