exist_attr = attr_line_obj.search([('product_tmpl_id', '=', template_id.id), ('attribute_id', '=', att_id.id)], limit=1)
if exist_attr:
variant_Vals.append((1, exist_attr.id, {'value_ids': [(4, a_v_id)]}))
else:
variant_Vals.append((0, 0, {'attribute_id': att_id.id, 'value_ids': [(4, a_v_id)]}))

Hope it is work.

Usman Farzand

Author

you are just amazing love it thank you sooo much for solving my prlbm ......

Timothy Randy

When I make a custom app, I use the custom view to update a record's value. So whenever I wanted to edit an existing record, I just click Edit Button in the top left page to edit it. So sorry if this isn't the answer you need.

Avinash Nk

Hi Usman,

Here is an example of code for updating product template attributes.

Check this and try to fix your problem, while considering this

@api.multi
def test_test(self):
    self.env['product.template'].browse(product_id).write({
        'attribute_line_ids': [(0, 0, {
            'attribute_id': attribute_id,
            'value_ids': [(6, 0, [value_id_1, value_id_2])],
        })]
    })

Thanks & Regards

Avinash N K

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