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Re: Copying parameters to singleton class

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From 7stud -- <bbxx789_05ss@yahoo.com>
Newsgroups comp.lang.ruby
Subject Re: Copying parameters to singleton class
Date Mon, 11 Apr 2011 21:48:38 -0500
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..but then you could do this:

module ClassFactory
  def ClassFactory.included(includer)
    includer.extend(ClassMethods)
  end

  module ClassMethods

    def using(hash)
      Class.new do
        @options = hash
        class << self
          attr_reader :options
        end
      end
    end

  end
end

class Opportunities
  include ClassFactory
end

Foo = Opportunities.using({one: 1, two: 2, three: 3})
Bar = Opportunities.using({four: 4, five: 5, six: 6})

p Foo.options
p Bar.options

--output:--
{:one=>1, :two=>2, :three=>3}
{:four=>4, :five=>5, :six=>6}


I really wanted to write that like below, but it doesn't work??

module ClassFactory
  def ClassFactory.included(includer)
    includer.extend(ClassMethods)
  end

  module ClassMethods

    def using(hash)
      Class.new do
        @options = hash
      end
    end

    def options
      @options
    end

  end
end

class Opportunities
  include ClassFactory
end

Foo = Opportunities.using({one: 1, two: 2, three: 3})
Bar = Opportunities.using({four: 4, five: 5, six: 6})

p Foo.options
p Bar.options

--output:--
prog.rb:28:in `<main>': undefined method `options' for Foo:Class 
(NoMethodError)

-- 
Posted via http://www.ruby-forum.com/.

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Thread

Copying parameters to singleton class Lars Olsson <lasso@lassoweb.se> - 2011-04-11 02:19 -0700
  Re: Copying parameters to singleton class Robert Klemme <shortcutter@googlemail.com> - 2011-04-11 04:34 -0500
    Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-11 21:21 -0500
    Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-11 21:05 -0500
      Re: Copying parameters to singleton class Robert Klemme <shortcutter@googlemail.com> - 2011-04-12 01:53 -0500
        Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-12 13:31 -0500
    Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-12 19:08 -0500
  Re: Copying parameters to singleton class Jesús Gabriel y Galán <jgabrielygalan@gmail.com> - 2011-04-11 04:36 -0500
    Re: Copying parameters to singleton class Lars Olsson <lasso@lassoweb.se> - 2011-04-11 02:53 -0700
  Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-11 21:48 -0500
    Re: Copying parameters to singleton class Robert Klemme <shortcutter@googlemail.com> - 2011-04-12 02:00 -0500
      Re: Copying parameters to singleton class Lars Olsson <lasso@lassoweb.se> - 2011-04-12 01:25 -0700
        Re: Copying parameters to singleton class Robert Klemme <shortcutter@googlemail.com> - 2011-04-12 03:51 -0500
        Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-12 13:14 -0500
          Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-12 13:38 -0500
      Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-12 13:43 -0500
  Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-12 19:29 -0500
    Re: Copying parameters to singleton class Lars Olsson <lasso@lassoweb.se> - 2011-04-13 01:49 -0700
  Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-13 19:32 -0500
  Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-13 19:49 -0500
    Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-13 20:09 -0500
      Re: Copying parameters to singleton class Lars Olsson <lasso@lassoweb.se> - 2011-04-14 01:33 -0700
        Re: Copying parameters to singleton class 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-14 12:07 -0500

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