How can I loop through a one2many field and sum the number of products having the same id in odoo version 15?

Question

I want to add the quantities of the products by id or name, that is, if I have 3 equal products in a one2many field, each one with a different quantity and then another product with a different quantity is added 2 times, at the end I want to show the total quantity in another field showing the name and total quantity of the two products.

Ijas Ahammed P · Accepted Answer

product_qty = {}
for line in order.order_line: # assuming "order" is the parent record with a one2many field "order_line"
if line.product_id.id [1] in product_qty:
product_qty[ line.product_id.id] [2] += line.product_uom_qty
else:
product_qty[ line.product_id.id] [3] = line.product_uom_qty
# Now, product_qty dictionary will contain product IDs as keys and their respective quantities as values

[1] https://line.product_id.id
[2] https://line.product_id.id%5D
[3] https://line.product_id.id%5D

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