code in the lib directory

Hi,

I've put code very similar to the following code in the lib directory.

module Common   A_CONSTANT = [ 'one', 'two', 'three', 'four' ]

  def a_method(session)     if !session[:d] then       session[:d] = 'a string constant'     end     ... more of the same ...   end end

The file containing this code is named 'common.rb'. The constant and method are then referenced in a number of my controllers similar to the following:

class MyController ...   def index     ...     some_variable = Common::A_CONSTANT     ...     Common.a_method(session)     ... end

When the app is run, ruby/rails is able to resolve the A_CONSTANT reference, but I can't seem to get the method to resolve. I've tried using require in the controller files, I've tried delimiting the method with double colons and I've tried different names for the module while making sure the file and module names in sync. What am I doing wrong?