A demo of how a console router might work

console_router.rb

module Models
  class Inventory
    def self.all
      [Object.new]
    end
    def self.find(inventory_id)
      Object.new
    end
  end
end

module Views
  module InventoryViews
    def self.menu
      puts "\t\tinventory menu, chomping"
      gets.chomp
    end
    def self.all(inventories)
      puts "\t\tshow all inventories"
    end
    def self.show(inventory)
      puts "\t\tshow 1 inventory"
    end
  end
  module RootViews
    def self.menu
      puts "Root Menu, chomping"
      gets.chomp
    end
  end
end

module Controllers
  class InventoryController
    def self.menu
      Views::InventoryViews.menu
    end

    def self.all
      inventories = Models::Inventory.all
      Views::InventoryViews.all(inventories)
    end

    def self.show(inventory_id)
      inventory = Models::Inventory.find inventory_id
      Views::InventoryViews.show(inventory)
    end

    def self.route(choice=nil, *args)
      while true
        case choice
        when nil
        when "1"
          puts "\tInventory.all"
          all
        when "2"
          puts "\tInventory.show"
          show(args)
        when "x"
          puts "\texiting"
          return
        else
          puts "I do not understand"
        end
        choice = menu
      end
    end
  end

  class RootController
    def self.menu
      Views::RootViews.menu
    end

    def self.route(choice=nil)
      while true
        case choice
        when nil
        when "1"
          puts "going to Inventory Controller"
          InventoryController.route
        when "2"
          puts "going to Orders Controller"
          OrdersController.route
        when "x"
          puts "exiting"
          return
        else
          p "I have no ideas what you want"
        end
        choice = menu
      end
    end
  end
end

Controllers::RootController.route