Get inventory quantity for line items in cart

Technical Q&A
1

Is there any way to fetch the inventory quantity of cart line items on the script editor. I have tried to use item.variant.inventory_quantity but it says undefined method “inventory_quantity”.

2

Hi @anish_soni ,

There is a “quantity” method directly on the line_item object. So you would call line_item.quantity

Here is a simple script that will output the variant id and quantity of each line item in the cart:

cart = Input.cart
  cart.line_items.each do |line_item|
    puts "#{line_item.variant.id}: #{line_item.quantity}"
  end
Output.cart = cart

I hope that is helpful!

Matthew

3

Thanks for your reply but I want to fetch the stock of line item not line item quantity.

4

Ah, misread that.

It doesn’t seem to be included in the variant object.

You might try passing as a line_item property, but it wouldn’t necessarily be up-to-date. I imagine it would be the stock quantity of the variant the moment it was added to the cart. So that might not work for your scenario.

5

{{lineitem.variant.inventory_quantity}} .

1 Like
6

Yes, that works for rendering it in html/liquid template, but is not a valid method in checkout scripts.

7

Hi Anish_soni, unfortunately i wasn’t able to access inventory quantities either, but i developed a workaround that works for my purposes that may work for you, but i did not need the actual quantity, i just needed to know if it was in stock or not. Here’s what i did:

Using a shopify flow, i tagged the product as out-of-stock when its inventory level equals zero. then in your script, use

contains_tag = false
line_item.variant.product.tags.each do |tag|
  if tag = "out-of-stock"
    contains_tag=true
  end
end
if contains_tag != true
  {{ DO YOUR LOGIC HERE}}
end