REST客戶端回調：如何分辨當項目完成加載？

我試圖使用REST Client和DelayedJob加載從這個外部API的一些項目。REST客戶端回調：如何分辨當項目完成加載？

但是，與Ajax check for database change using route不同，這些項目不會保存到數據庫，而是直接進入視圖 - 那麼如何知道它們何時完成加載，以便我可以使用Ajax將它們加載到客戶端中？

現場應用程序，它可以在飛行運行：http://runnable.com/VW9rQx-KiIFfmpII/ajax-affiliates

應用程序/控制器/ main_controller.rb

class MainController < ApplicationController 
    def index 
    # Delay fetching 
    @products = Affiliate.delay.fetch 
    end 

    # Pseudo-code from SO `ajax-check-for-database-change-using-route` 
    # 
    # def check_items_loaded 
    # @items_status = Affiliate.find(params[:id]).items_loaded 
    # respond_to do |wants| 
    #  wants.js 
    # end 
    # end 
end

的config/routes.rb中

# Pseudo-code from SO `ajax-check-for-database-change-using-route` 
# get '/check_items_loaded/:id', to: 'photos#check_items_loaded', as: :check_items_loaded

應用程序/模型/ affiliate.rb

require "rest_client" 

module Affiliate 
    def self.fetch 
    response = RestClient::Request.execute(
     :method => :get, 
     :url => "http://api.shopstyle.com/api/v2/products?pid=uid7849-6112293-28&fts=women&offset=0&limit=10" 
    ) 

    @products = JSON.parse(response)["products"].map do |product| 
     product = OpenStruct.new(product) 
     product 
    end 
    end 

# More pseudo-code 
# Add `items_loaded` boolean to database? 
# private 
# def set_items_loaded 
#  self.update_attributes(items_loaded: ???) 
# end 
end

來源

2015-06-03 Flynt Hamlock