from odoo import api, fields, models, _
from odoo.tools import float_compare


class PurchaseOrder(models.Model):
    _inherit = 'purchase.order'

    demand_plan_line_id = fields.Many2one(comodel_name="sf.production.demand.plan",
                                          string="需求计划明细", readonly=True)

    @api.depends('origin', 'demand_plan_line_id')
    def _compute_purchase_type(self):
        for purchase in self:
            if purchase.order_line[0].product_id.categ_id.name == '坯料':
                if purchase.order_line[0].product_id.materials_type_id.gain_way == '外协':
                    purchase.purchase_type = 'outsourcing'
            else:
                if purchase.demand_plan_line_id.supply_method == 'outsourcing':
                    purchase.purchase_type = 'outsourcing'

                elif purchase.demand_plan_line_id.supply_method == 'purchase':
                    purchase.purchase_type = 'outside'