Hello to all,
On Odoo 14 I have developed a module that allows you to link articles to others. For example, in the record of item A, I fill in a field that says that I link item B and C with different quantities. This means that when I enter an invoice and I select item A, 2 new lines are created with item B and C.

This works, but I am running into a problem. I want that when I change the quantity of item A, the quantities of B and C are updated. The problem is that not all the values of the created rows are accessible in my code, for example I don't have access to a "link code" field that allows me to link my B and C rows to my A row.

Does anyone have an idea how to retrieve the values of the rows present in the treeview, but not yet in the database?

Thanks in advance !