Nested resources in phoenix

router.ex

defmodule HelloPhoenix.Router do
  use HelloPhoenix.Web, :router

  pipeline :browser do
    plug :accepts, ["html"]
    plug :fetch_session
    plug :fetch_flash
    plug :protect_from_forgery
  end

  pipeline :api do
    plug :accepts, ["json"]
  end

  scope "/", HelloPhoenix do
    pipe_through :browser # Use the default browser stack
    get "/", PageController, :index
    resources "/users", UserController
    resources "/categories", CategoryController do
      resources "/items", ItemsController
    end
  end

  # Other scopes may use custom stacks.                                                     # scope "/api", HelloPhoenix do                                                           #   pipe_through :api                                                                     # end
end

hio