From: Adam Wilson <adam@...>
Date: 2009-02-20T22:00:45+09:00
Subject: module include class/instance methods confusion!!

I have been having trouble today with a module include in a Rails app.
The module file sits in the /lib folder.

My problem, I worked out (which I have noticed before) is that I cannot
seem to access defined class methods in the module via the including
class. It seems that only instance methods are available. Let me
explain:

module MyModule
  def self.test
    "class"
  end

  def test
    "instance"
  end
end

class MyClass
  include MyModule
end

class MyController
  my_class = MyClass.new

  test1 = MyClass.test #=> gives an NoMethodError
  test2 = my_class.test #=> works
end

Is there something I am missing here? Please note I just wrote this code
quickly to show the idea, have not tested!
Its not essential but seems a bit silly that I need to use an instance
method in a situation when a class method would be much neater.

Any pointers much appreciated!
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