Question

我增加了很多与汽车型号相关的字段所有记录均以行显示如果我从任何列中删除任何数据，我需要主模型“汽车”

没有任何反应

我添加了ondelete参数，它不起作用

class item(models.Model):
_rec_name = 'name'
_name = 'item'

related = fields.Many2many(comodel_name="cars", string="related products",required=False, on_delete='NO ACTION', )

class cars(models.Model):
_name = 'cars'

name = fields.Char( string="Car",translate=True, ondelete='NO ACTION')
int_ref = fields.Char(string="Internal reference", required=False,store=True ,ondelete='NO ACTION')
model = fields.One2many(comodel_name="models", inverse_name="car", string="Models", required=False,ondelete='NO ACTION' )
pro = fields.Char(string="profit mergin", required=False, type='int' ,ondelete='NO ACTION')

rang = fields.One2many(comodel_name="yearrange", string="Range", inverse_name="product_id", ondelete='NO ACTION')
start = fields.Char(string="", required=False, ondelete='NO ACTION')
end = fields.Char(string="", required=False, ondelete='NO ACTION')
ignore = fields.Char(string="Ignore", required=False,ondelete='NO ACTION' )

Answer 1

例如，如果删除表示更改字段值像start字段，然后在汽车菜单中打开汽车，您会发现原始值。

如果这就是您想要的，那么您做错了many2many字段将更改原始记录，因为它就像是通往它的大门。您需要做的是创建另一个行为就像关系表的模型。

       class itemCare(models.Model):
            _name = 'items.cars.rel'

            item_id = fields.Many2one.......
            card_id = fields.Many2one.........

            # and you need to repeat all car fields here too
            # I don't know if by doing _inherit = 'cars' will do the trick

            # remove ondelete from cars and here too
            name = fields.Char( string="Car",translate=True, ondelete='NO ACTION')
            int_ref = fields.Char(string="Internal reference", required=False,store=True ,ondelete='NO ACTION')
            model = fields.One2many(comodel_name="models", inverse_name="car", string="Models", required=False,ondelete='NO ACTION' )
            pro = fields.Char(string="profit mergin", required=False, type='int' ,ondelete='NO ACTION')

            rang = fields.One2many(comodel_name="yearrange", string="Range", inverse_name="product_id", ondelete='NO ACTION')
            start = fields.Char(string="", required=False, ondelete='NO ACTION')
            end = fields.Char(string="", required=False, ondelete='NO ACTION')
            ignore = fields.Char(string="Ignore", required=False,ondelete='NO ACTION' )


            @api.onchancge('card_id')
            def onchange_card(self):
                if self.card_id:
                    # fill up all your field with same value of card
                    self.name = self.card_id.name
                    .....
                    .....
                else:
                    # empty all field when we remove the card
                    self.name = False
                    .....
                    ....

        class item(models.Model):
            _rec_name = 'name'
            _name = 'item'

            # the relation now is one2many to the new model that holds the fields of the car
            related = fields.One2many(comodel_name="items.cars.rel", string="related products",required=False )

希望您有想法，您可能会找到一个更好的解决方案，因为您需要一个模型来存储所做的更改在项目视图上

如何将ondelete参数添加到many2many字段？

1 个答案: