ruby on rails - Unable to update attribute - undefined method -

missing fundamental here. unable update items_loaded once rest client done fetching items api.

live app can run on fly: http://runnable.com/vw9rqx-kiiffmpii/ajax-affiliates

undefined method `items_loaded=' #<class:0x000000037cce20> app/models/affiliate.rb:17:in `set_items_loaded' app/controllers/main_controller.rb:8:in `index' 

main_controller.rb

class maincontroller < applicationcontroller   def index     # delay fetching     # @products = affiliate.fetch     @products = affiliate.delay.fetch      # let know when fetching done     affiliate.set_items_loaded   end    def check_items_loaded     @items_status = affiliate.items_loaded     respond_to |wants|       wants.js     end   end end 

affiliate.rb

require "rest_client"  class affiliate < activerecord::base   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 |product|       product = openstruct.new(product)       product     end   end    def self.set_items_loaded     self.items_loaded = true   end end 

20150604120114_add_items_loaded_to_affiliates.rb

class additemsloadedtoaffiliates < activerecord::migration   def self.up     change_table :affiliates |t|       t.column :items_loaded, :boolean, default: false     end   end    def self.down     change_table :affiliates |t|       t.remove :items_loaded     end   end end 

actually, in class affiliate, defined method self.set_items_loaded affiliate object , set attribute items_loaded true on each object of class.

if want that, should write

affiliate.rb

def self.set_items_loaded   self.update_all(items_loaded: true) end 

main_controller.rb

affiliate.set_items_loaded 

if want update 1 object of affiliate set item_loaded true, should define method way , use on 1 object

affiliate.rb

def set_items_loaded   self.items_loaded = true end 

main_controller.rb

affiliate.first.set_items_loaded # first object of affiliate updated