Why compute method is throwing error only in tree view?-CodePudding

I'm using compute method to add records to the one2many field and it's working fine in form view but not in tree view. Can anyone help?

@api.depends("odoo_product_id")
def _compute_offers(self):
    for rec in self:
        if rec.odoo_product_id:
            offers = self.env['demo.offers'].search
                ([('product_id','=',rec.odoo_product_id.id)])
            for offer in offers:
                rec.shop_offer_ids = rec.shop_offer_ids   offer

It's throwing Compute method failed to assign Error in tree view only

CodePudding user response：

I can't test it, and you did not show what error you got.

You should always provide values in the compute functions. And use false if you don't have anything to put there.

Try to use field commands. https://www.odoo.com/documentation/master/developer/reference/backend/orm.html#odoo.fields.Command

@api.depends("odoo_product_id")
def _compute_offers(self):
    for rec in self:
        rec.shop_offer_ids = False
        if rec.odoo_product_id:
            offers = self.env['demo.offers'].search
                ([('product_id','=',rec.odoo_product_id.id)])
            if offers:
                rec.shop_offer_ids = [(6, 0, offers.ids)]

CodePudding user response：

The compute method will fail to assign the field value for records where the odoo_product_id field is not set.

To fix that error use else to provide a default value for shop_offer_ids field.

Example:

@api.depends("odoo_product_id")
def _compute_offers(self):
    for rec in self:
        if rec.odoo_product_id:
            offers = self.env['demo.offers'].search
                ([('product_id','=',rec.odoo_product_id.id)])
            rec.shop_offer_ids = offers.ids
        else:
            rec.shop_offer_ids = []

You can find an example in website_event_questions module