Update field on on_change method.

Question

how to update field of parent object? eg: I want to update 'partner_id' field of 'sale.order' on changeing 'product_id' field of 'sale.order.line'. Is that possible?

I tried something like
@api.onchange('product_id')
def _onchange_type(self):
if self.product_id:
# it updates fields of same class
self.product_uom_qty = 3232

# but system ignores fields from parent class
self.order_id.partner_id =  1
self.order_id.client_order_ref = 'xyz'

Aitor Bouzas · Answer

Hi,

Try to use the relation field: sale.order.line has a field called order_id which could help to answer your question. Maybe you can update using "order_id.partner_id = 'id' "

Hope this helps.

Ivan · Answer

The first question that pops into my mind is: what is the rule if there are more than one lines are changed and each of the line yields different partner_id?

A more appropriate approach, AFAIK, is to put on_change on the order_line (which is the one2many field in sale.order to sale.order.line) and change the partner_id based on all of product_ids in order_line.

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