Question

I have variable call items having array of items which contains following value

[[#<Item id: 16, item_name: "Titan limited edition watch", description: "This is watch", reference_no: 21541, price: 5000, currency_type: nil, payment_type: "0", created_at: "2012-02-29 06:53:38", updated_at: "2012-02-29 06:53:38", quntity: 500, avatar_file_size: 8805, avatar_file_name: "images.jpg", avatar_content_type: "image/jpeg", avatar_updated_at: "2012-02-29 06:53:38">], [#<Item id: 25, item_name: "Titan limited edition watch", description: "this is watch", reference_no: 2, price: 5000, currency_type: nil, payment_type: "0", created_at: "2012-03-02 13:06:39", updated_at: "2012-03-02 13:06:39", quntity: 5, avatar_file_size: 8805, avatar_file_name: "images.jpg", avatar_content_type: "image/jpeg", avatar_updated_at: "2012-03-02 13:06:39">]]

I try to make a loop like this

@items.each do |item|

end    

and item variable contain following value

[#<Item id: 16, item_name: "Titan limited edition watch", description: "This is watch",     reference_no: 21541, price: 5000, currency_type: nil, payment_type: "0", created_at: "2012-    02-29 06:53:38", updated_at: "2012-02-29 06:53:38", quntity: 500, avatar_file_size: 8805, avatar_file_name: "images.jpg", avatar_content_type: "image/jpeg", avatar_updated_at: "2012-02-29 06:53:38">]

but when i try following gives me error

@items.each do |item|    
  item.item_name    
end    

error is

undefined method `item_name' for #<Array:0xb6c1dffc>    

please help me.
Thanks.

Answer 1

You have an array of arrays; inside the loop, item is an array, and an array doesn’t have an item_name method. You need to get at the item inside the array.

@items.each do |item|
  item[0].item_name
end

You can also flatten the array to make it one-dimensional:

@items.flatten.each do |item|
  item.item_name
end