Creating a "namespace" for Rails controllers

namespaceable_controller.rb

module NamespaceableController

  extend ActiveSupport::Concern

  included do
    helper_method :namespace
  end
  

  private


  # Returns this class's namespace as a String
  def namespace
    self.class.namespace
  end


  module ClassMethods

    # Call this in your controller's _Base_ class to set a constant namespace used
    #   through each of the sub-classes. This sets the layout for the controller and it's
    #   sub-classes, as well as providing a class and instance method named `namespace`
    #   to access the current namespace name. If the current controller's namespace is
    #   not set, will fallback on the superclass's namespace. This _might_ cause issues
    #   if multiple layers of inheritance are used.
    #
    # name - A String with the name of the current namespace (default: nil)
    #
    # Examples
    #
    #   class Admins::BaseClass < ApplicationClass
    #   
    #     namespace "admins"
    #
    #   end
    #
    # Returns a String
    def namespace(name = nil)
      if name
        layout(name)
        @namespace = name
      else
        defined?(@namespace) ? @namespace : superclass.instance_variable_get("@namespace")
      end
    end

  end

end

@CodeMeister - Have a look at this...