Is it possible to call a function field method from onchange function.

Question

i created a function field tax_amount in sale_order_line. Now i want to call my function field from existing onchange function of product uom in sale order line. How to call a function field function from onchange function and give me example

(or)

Simply i want to compute a sale order amounts(amount_untaxed, amount_tax, amount_total) for each sale order line entries. Can be a solution or idea to achieve this

Akhil P Sivan · Accepted Answer

Hi,
Hope you are working with v8. I don't think, you need to override the onchange function.
If your tax_amount depends only on product uom, you can define the tax_amount as a compute field which depends on product_uom. onchange is default in compute fields. If tax_amount depends on more fields, you can include that also. For eg:
class sale_order_line(models.Model):
_inherit = 'sale.order.line'
tax_amount = fields.Float(compute='_get_tax_amount', string='Tax Amount')
@api.one
@api.depends('produ

Sharmila · Answer

Hi,
You can call the function field method from onchange method.
class sale_order_line(models.Model):
_inherit = 'sale.order.line'
tax_amount = fields.Float(compute='_get_tax_amount', string='Tax Amount')
@api.one
@api.depends('product_uom', 'product_id')
def _get_tax_amount(self):
//Your code here that calculates the tax value
self.tax_amount = tax value

René Schuster · Answer

Simply call your function from within the on_change method.

Take care of the scope and use self.function_name.

An example can be found in the hr_holidays module: /onchange_date_from/ calls /_get_number_of_days/

Regards.

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