Should a class/module in lib be required?

I just wrote a small module in my Rail 3.0.0 application lib folder:

module AdminFilters

  def verify_is_admin
    if current_user.nil? || current_user.role != User::Role::ADMIN
      redirect_to :root, :alert => "You don't have enough permissions"
    end
  end

end

And in order to make it available for all my controllers :

class ApplicationController < ActionController::Base
   protect_from_forgery

   require "admin_filters"
   include AdminFilters

end

If I remove the require line, rails complains like this :

uninitialized constant ApplicationController::AdminFilters

Is it the normal behavior ? I thought that any rb file in the lib folder was a开发者_运维百科uto-loaded by rails ...

Yes, it was auto-loaded in Rails 2.x.x, but Rails 3 doesn't load files from lib/ anymore. You should consider placing your files into the config/initializers directory.