From: Troy Denkinger <tdenkinger@...>
Date: 2006-03-02T08:30:04+09:00
Subject: Dynamic Object Instantiation

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I'm sure this question has been asked and answered in the past, but googlin=
g
and searching the list archives isn't getting me much.  It's probably a cas=
e
of me not searching correctly.  So, if someone has a pointer on that front,
let me know.

Basically, I want a class to dynamically load and instantiate objects.
Here's the code that is supposed to do that:

ComponentGatherer.rb
---------------------------------

class ComponentGatherer

  def initialize()
    @@components =3D []
    Dir.foreach( File.dirname( __FILE__ ) ){|x|
      next unless x =3D~ /component.rb$/i
      x.gsub!( ".rb", "" )
      require "#{x}"
      @@components.push( x )
    }
  end

  def components
    @@components.each{ |x|
        test =3D x.new()
       # Blah, blah, blah
    }
  end
end


Locating and requring the files seems to be working fine, it's when the
component() call is made that I'm a bit lost.  I have to
*Component.rbfiles, they look like this:

MyOtherComponent.rb
--------------------------------
class MyOtherTestComponent

  attr :test

  def initialize()
    self.test =3D 2
  end
end

The error I get from the components() method is:

  undefined method `new' for "MyOtherTestComponent":String (NoMethodError)

I understand what the error is saying, but I'm not sure how to call new() o=
n
"x" above such that it returns an object of the requested class.  Any help
is appreciated.

Regards,

Troy Denkinger

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