sale_order.py

# Copyright 2021 Le Filament (https://le-filament.com)
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html)

from odoo import models


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

    # ------------------------------------------------------
    # Business method
    # ------------------------------------------------------
    def clean_sale_order(self):
        super(SaleOrder, self).clean_sale_order()
        sol_line_section = self.order_line.filtered(
            lambda s: s.display_type == 'line_section' and s.sale_project_id is not None
        )
        for sol_section in sol_line_section:
            next_sol = False
            for sol in self.order_line.sorted(key=lambda r: (r.sequence, r.id)):
                if sol.sequence > sol_section.sequence \
                    or (sol.sequence == sol_section.sequence
                        and sol.id > sol_section.id):
                    next_sol = sol
                    break
            if not next_sol or\
                next_sol.sale_project_id != sol_section.sale_project_id \
                    or not next_sol.product_id:
                sol_section.unlink()