Rails - Dec 2006 - Problems with application level variables

Description:

I created a class called MenuLink so I could create link objects for my
navigation menus. I want to instantiate the list and have it available
to all controllers in my applcation.

How I did it:

I created a file called menu_link.rb in app/models that contained

class MenuLink
  include Enumerable
  attr_accessor :name, :method

  @@items = []

  def initialize()
    @@items.push(self)
  end

  def self.each(&block)
    @@items.each(&block)
  end
end

Then in my app/controllers/application.rb I put

  before_filter :config_defaults

  def config_defaults
    # More on this function later
    MenuLink.reset
###################

    MenuLink.new(''HOME'',''welcome'')
    MenuLink.new(''ABOUT US'', ''about'')
    MenuLink.new(''SCHEDULE'', ''schedule'')
    MenuLink.new(''YOGA INFO'', ''info'')
    MenuLink.new(''PHOTO GALLERY'', ''gallery'')
    MenuLink.new(''TEACHER TRAINING'',
''training'')
    MenuLink.new(''CONTACT US'', ''contact'')
  end



Then in my templates I can do things like MenuLink.each {do stuff}

Now this seems to work alright......except for one thing.

Every time you refresh the page, any page, it creates a whole new set
of MenuLink objects and appends them to the total @@items list.

So I made a reset function for MenuLink

def self.reset
  @@items = []
end

So what I''m wondering is:

1) Is there a more correct way to handle this? Perhaps a filter that
only executes a single time and not with every refresh?

2) In ruby, is this the correct way to ''destroy'' objects?


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