Automatic insert/delete some Sale Order Lines in Odoo 11

Question

Hi,
We have some products for which an eco-batterie is applied.
I have defined this eco-batterie as a service and, if it need to be applied for a specific product, when I save a new sale order line or update it, the eco-batterie appears correctly. This is fine.
However I would like that this sale order line with the eco-batterie appears (or desappears) immediately, before to click on the save button. I try @api.onchange('product_id', 'product_uom_qty') but it is not working (the lines does not c

Cybrosys Techno Solutions Pvt.Ltd · Answer

Hi,
In Odoo 11 creating or removing sale order lines directly inside a line-level @api.onchange('product_id')
will not refresh the UI because Odoo does not allow adding sibling
lines from within a single line’s onchange. To make the eco-battery
(eco-fee) line appear or disappear immediately before clicking Save you
must instead use an @api.onchange on the sale.order itself. An onchange on the order correctly refreshes the one2many list (order_line)
and allows new lines to appear instantly. The l

Kunjan Patel · Answer

Hello Boris Giordanengo,
I hope you are doing well
*Use @api.onchange on sale.order (not the line):
*   class SaleOrder(models.Model):       _inherit = 'sale.order'       @api.onchange('order_line')       def _onchange_order_line_eco(self):           eco_product = self.env.ref('your_module.eco_batterie_product')           for line in self.order_line:               if line.product_id.needs_eco_batterie:                   self.order_line = [(0, 0, {                       'product_id': eco_product.

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