How do I inherit default data from a module or class

I am working on an application to automate testing for SQL injection vulnerability. It is currently named Deft and is for a University project.

I want to be able to run tests from a command line, or an interactive console. I am coding several classes. (Deft::Cli, Deft::Console etc.)

Here's what I think I'd like to do.

module Deft
  module App
 开发者_JS百科   attr_accessor :origin
    @origin = { "host" => "localhost", "port" => "80" }
  end
end

module Deft
  class Console
    include App

    def initialize
      puts origin
    end
  end
end

The example has been simplified, but the point is that the default values (and structure) get defined in the Deft::App module.

The problem as I can tell is that although methods.grep(/origin/) from inside a console instance does indeed give me ["origin=", "origin"] calling origin returns nil. Instead of the values I define in Deft::App. It makes sense that it doesn't work, but I don't know how to make it work.

Perhaps I'm taking the simplified example too literally, but one way to fix it is to get rid of the attr_accessor class method invocation and just make origin be the constant Origin or ORIGIN.

What about this?

module Deft
  class DefaultConsole
    attr_accessor :origin
    def initialize
      @origin = {'host' => 'localhost', 'port' => 80}
    end
  end

  class Console < DefaultConsole
    def initialize
      super
      puts origin
    end
  end
end

Deft::Console.new
# => {'host' => 'localhost', 'port' => 80}

Try like this:

module Deft
  module App
    attr_accessor :origin
    def init
      @origin = { "host" => "localhost", "port" => "80" }
    end
  end
end

module Deft
  class Console
    include App

    def initialize
      init
      puts origin
    end
  end
end

Deft::Console.new

Thanks to everyone that added their input. I'm going to go ahead and answer my own question, this works as I had hoped.

module Deft
  module App
    @@origin = { "host" => "localhost", "port" => "80" }

    def origin        ; @@origin        ; end
    def origin=(args) ; @@origin=(args) ; end
  end
end

If anyone wants to copy and clean this up using attr_accesor then I'd be happy to edit this back into my question and accept their answer.