Odoo 8: what happens when you confirm a Sale Order (pseudocode)

odoo8_sale_confirm_pseudocode.py

# This is pseudocode.
#
# I copied and simplified some of the code that gets run when you validate a
# Sale Order in Odoo 8.
#
# More or less, a procurement is created, copying the Route from the order line
# if it has been specified.
#
# Then the procurement is immediately run, and a choice is made on the rule to
# use.


# sale_stock/sale_stock.py
class sale_stock_SO:
    def _prepare_order_line_procurement(order, line):
        proc = super()
        proc.route_ids = line.route_id
        proc.warehouse_id = order.warehouse_id
        proc.partner_dest_id = order.partner_shipping_id
        proc.location_id = order.partner_shipping_id.property_stock_customer


# sale/sale.py
class sale_SO:
    def _prepare_order_line_procurement(order, line):
        proc = Proc()
        proc.group_id = order.procurement_group_id  # (created if empty)

    def action_ship_create(self):
        procs = []
        for line in self.order_line:
            if line.procurement_ids:
                line.procurement_ids.check()
            else:
                procs += Proc.create(self.prepare_order_line_procurement)

        procs.run()


# procurement/procurement.py
class Proc:
    def _assign(self):
        if not self.rule_id:
            self.rule_id = self._find_suitable_rule()


# stock/procurement.py
class stock_Proc:
    def _find_parent_locations(self):
        return [self.location_id] + self.parent_locations

    def _find_suitable_rule(self):
        if not super():
            return self.search_suitable_rule(self._find_parent_locations)

    def _search_suitable_rule(self, proc):
        Rule = self.env['procurement.rule']

        domain = 'location_id in procurement.location_id (and parents)'

        if proc.warehouse_id:
            domain += 'warehouse_id = procurement.warehouse_id or false'

        # 1st attempt
        Rule.search(domain + 'route_id in procurement.route_ids')

        # 2nd attempt
        Rule.search(domain +
                    'route_id in product and product_category.route_ids')

        # 3rd attempt
        Rule.search(domain + 'route_id in warehouse.route_ids')