From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2009-11-14T07:02:20+09:00
Subject: Re: Module with a class?

On Fri, Nov 13, 2009 at 9:30 PM, Judson Lester <nyarly@gmail.com> wrote:
> On Fri, Nov 13, 2009 at 10:48 AM, Matt Brooks <mattbrooks@gatech.edu> wrote:
>
>> I may need to reexplain it, but basically want classes in different
>> files, but want the other classes to have access to 1 core files'
>> objects instance variables and methods, since this core object will be
>> creating the other objects of the other classes in the other files....
>>
>>
> Some example code would help a lot.  File boudaries notwithstanding it
> sounds like you have something like:
>
> class Hello
>  def say
>    puts "Hello"
>  end
> end
>
> class Core
>  def initialize
>    @hello=nil
>  end
>
>  attr_reader :hello
>
>  def add_hello_widget
>    @hello= Hello.new
>  end
> end
>
> core = Core.new
> core.add_hello_widget
> core.hello.say  #=> "Hello"
>
> Something like that?  If not, what's missing?

If I understood correctly, he wants objects of class Hello to call
methods on the instance of Core which created them. Something like
(untested):

class Hello
  def initialize core
    @core = core
  end
  def say
    puts "hello: #{@core.msg}"
  end
end

class Core
  def initialize msg
    @msg = msg
    @hello=nil
  end
  attr_reader :hello, :msg

  def add_hello_widget
    @hello= Hello.new self # pass the instance of core to the hello instance
  end
end

core = Core.new "i'm core"
core.add_hello_widget
core.hello.say  #=> "hello: i'm core"

Hope this helps,

Jesus.