Use new stream format

app/controllers/items_controller.rb

@@ -1,6 +1,6 @@
 class ItemsController < ApplicationController
   before_action :set_item, only: [:show, :edit, :update, :destroy]
-  before_action :require_login, except: [:index]
+  before_action :require_login, except: [:index, :authorize]
 
   def require_login
     redirect_to new_user_session_path unless current_user.present?
@@ -16,7 +16,9 @@ def index
   # GET /items/1.json
   def show
     session[:token] ||= SecureRandom.hex(16)
-    Rails.cache.write(session[:token], @item.streams.values, expires_in: 1.hours)
+    Rails.cache.write(session[:token], 
+                      @item.streams.collect { |s| s["url"] }, 
+                      expires_in: 1.hours)
   end
 
   # GET /items/new
@@ -68,7 +70,7 @@ def destroy
     end
   end
 
-  # GET /items/auth
+  # GET /items/authorize
   def authorize
     authorized_streams = Rails.cache.read(params[:token])