How to pass new field value from sale order line to invoice lines while using down payment in odoo 15

Question

How to pass new field value from sale order line to invoice lines while using down payment in odoo 15

Answer 1

Usefull basics:

The model sale.order.line is related to the model account.move.line through this field:

invoice_lines: list of invoice lines (account.move.line) linked to this sale.order.line

And the corresponding relational field in account.move.line to sale.order.line is:

sale_line_ids: list of sale order lines (sale.order.line) linked to this account.move.line

1. Create a new field

To create a new field in the model you want: (App) Configuration > (Menu) Technicals > Fields Create new field in the model you want (account.invoice.line ?) Example : mynewfield

2. Create an automated Action

Create an automated action using (App) Configuration > (Menu) Technicals > automated Actions Or: can be found here : /web?debug=1#id=&action=435&model=base.automation) Create a new one, on the model sale.order.line Action: execute python code

        #Update invoice lines corresponding to the current sale.order.line-record:
        for invoice_line_record in record.invoice_lines:
           invoice_line_record['mynewfield'] = record['invoiced']