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apilinesodooconstrainsv15
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Went I create a Sale, I want to limit the quantity of Order lines to 2 products only (When 2 products are loaded, i want the "Add a Product" "Add a section" and "Add a note" buttons to dissapear automatically).

I tried to use an @api.constrains but it only validates when I click Save button.


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Mily Shajan
Best Answer

Hi

Inherit the sale.order model and inside the onchange of 'order_line' we can add ValidationError or UserError

Try like this 


@api.onchange('order_line')
def _onchange_check_lines(self):
    if len(self.order_line) > 2:
        raise ValidationError("Only two products are allowed")

Regards

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