pos/pos_picking_load/models/pos_order.py

# Copyright (C) 2017 - Today: GRAP (http://www.grap.coop)
# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

from odoo import models, api, fields


class PosOrder(models.Model):
    _inherit = 'pos.order'

    # Field Section
    origin_picking_id = fields.Many2one(
        string='Origin Picking', comodel_name='stock.picking',
        readonly=True)

    # Overloadable Section
    @api.multi
    def _handle_orders_with_original_picking(self):
        """By default, the module cancel the original stock picking and
        set the original sale order as invoiced.
        Overload / Overwrite this function if you want another
        behaviour"""
        for order in self:
            # Cancel Picking
            order.origin_picking_id.action_cancel()
            order.origin_picking_id.write({'final_pos_order_id': order.id})

            # Set Sale Order as fully invoiced
            order.origin_picking_id.mapped('group_id.sale_id').write({
                'invoice_status': 'invoiced',
            })

    # Overload Section
    @api.model
    def create_from_ui(self, orders):
        """Cancel the original picking, when the pos order is done"""
        res = super().create_from_ui(orders)
        orders_with_original_picking = self.search([
            ('id', 'in', res), ('origin_picking_id', '!=', False),
            ('state', '!=', 'draft')])

        orders_with_original_picking._handle_orders_with_original_picking()

        return res

    @api.model
    def _order_fields(self, ui_order):
        res = super()._order_fields(ui_order)
        if 'origin_picking_id' in ui_order:
            res['origin_picking_id'] = ui_order['origin_picking_id']
        return res

    @api.multi
    def create_picking(self):
        """ Call super() for each order separately with the origin picking id
        in the context. The new picking will be updated accordingly in the
        picking's action_confirm() """
        for order in self:
            if order.picking_id:
                continue
            if order.origin_picking_id:
                order = order.with_context(
                    origin_picking_id=order.origin_picking_id.id)
            super(PosOrder, order).create_picking()
        return True