How to get partner_id from sale.order.line?

Question

Hi,
I would like to get the selected customer (partner_id) of sale.order from sale.order.line model, I /haven't/ succeeded yet.
Here is my source code
@api.onchange('product_id')
def _compute_customer_code(self):
if self.product_id.id:
partner_id = self.browse( order_id ).partner_id or 0 One more question, is there any way to check the onchange of partner_id of sale.order for updating the related value in sale.order.line?
Thank you for your help!

Yenthe Van Ginneken (Mainframe Monkey) · Accepted Answer

Hi Thanhps,
Why are you doing a browse to try and get the ID though? Why don't you simply get it through the link from sale.order.line to sale.order? For example:
@api.onchange('product_id')
def _compute_customer_code(self):
if self.product_id:
partner_id = self.order_id.partner_id
You can write an onchange on the field 'partner_id' to update values from there too. For example:
@api.onchange('partner_id')
def change_order_lines(self):
for line in self.order_line:
line. write(!'field': 'value'})

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