from odoo import api, models


class SaleOrder(models.Model):
    _inherit = "sale.order"

    @api.onchange("partner_id")
    def _onchange_partner_id(self):
        self.picking_policy = (
            self.partner_id
            and self.partner_id.picking_policy
            or self.parnter_id.commercial_partner_id.picking_policy
        ) or self.env["ir.config_parameter"].sudo().get_param(
            "sale.default_picking_policy", "direct"
        )

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if vals.get("partner_id"):
                partner = self.env["res.partner"].browse(vals["partner_id"])
                partner_picking_policy = (
                    partner.picking_policy
                    or partner.commercial_partner_id.picking_policy
                )
                if partner_picking_policy:
                    vals["picking_policy"] = partner_picking_policy
        return super().create(vals_list)