Hi !

I have write the an @api.onchange method in some Float field and the @api.onchange is calculation is working fine.

The problem is that when I click on save the system doesn't pick up the change and it all Float fields append to zero.

Does anybody knows how to do write() function of the model for @api.onchange function?

Below,i have mentioned the code

Thank you !

class LabTest(models.Model):
    _name = 'lab.test.line'
 
    line_id = fields.Many2one('quality.alert', string='perameter type')
    labtest_type_id=fields.Many2one('labtest.type', string='Test Name')   
    sample_value_per = fields.Float(string='Sample Value in Percentage')
    sample_value = fields.Float(string='Input Sample Value')

    @api.onchange('labtest_type_id','labtest_type_id.code','sample_value','sample_value_per')
    def onchange_value(self):
        for line in self:
            if line.labtest_type_id and line.labtest_type_id.code == 'ip' and line.sample_value:
                line.sample_value_per = float(line.sample_value/line.sample_value) * 100
            elif line.labtest_type_id and line.labtest_type_id.code == 'pp':
                ip_value = 1
                lp_lines = line.line_id.labtest_type_line.filtered(lambda r: r.labtest_type_id.code == 'ip')
                for ipln in lp_lines:
                    ip_value = ipln.sample_value
                line.sample_value_per = float(line.sample_value/ip_value) * 100
            elif line.labtest_type_id and line.labtest_type_id.code == 'ss':
                ip_value = 1
                lp_lines = line.line_id.labtest_type_line.filtered(lambda r: r.labtest_type_id.code == 'ip')
                for ipln in lp_lines:
                    ip_value = ipln.sample_value
                line.sample_value_per = float(line.sample_value/ip_value) * 100