Hi,

I'm in odoo v16. In the sale_order_line, I created a field "di_show" to show or not the line in the tree view on the sale_order form

di_show = fields.Boolean('Show line', default=True)

I created 2 one2many field on sale_order and 1 new page with the field "new_line_ids", like the first page with the field "order_line". My one2many new fields had compute and inverse method.

def _compute_new_line_ids(self):
        for sale_order in self:
        
            new_ids = sale_order.order_line.filtered(
                lambda t: t.di_show == True,
                )
        
            sale_order.new_line_ids = [(6,0,new_ids.ids )]
        
            new_ids = sale_order.order_line.filtered(
                lambda t: t.di_show == False,
                )
        
            sale_order.new_line_ids_zero = [(6,0,new_ids.ids )]

new_line_ids = fields.One2many("sale.order.line","id",compute=_compute_new_line_ids,inverse=_inverse_new_line_ids,string="Sale Order Lines")
    new_line_ids_zero = fields.One2many("sale.order.line","id",compute=_compute_new_line_ids,inverse=_inverse_new_line_ids,string="Sale order Lines")

When I change something in my second page, it works great. But when I want to add a line, I have an error because records are not saved before the inverse method. 

I see in debug mode, with expression, my sale_order.new_line_ids contains "line: sale.order.line(477, )" and it's the newId ref who is problematic.

This is my error :

RPC_ERROR
Odoo Server Error
Traceback (most recent call last):
  File "C:\Odoo16\server\odoo\http.py", line 1583, in _serve_db
    return service_model.retrying(self._serve_ir_http, self.env)
  File "C:\Odoo16\server\odoo\service\model.py", line 134, in retrying
    result = func()
  File "C:\Odoo16\server\odoo\http.py", line 1610, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "C:\Odoo16\server\odoo\http.py", line 1807, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "C:\Odoo16\server\odoo\addons\base\models\ir_http.py", line 154, in _dispatch
    result = endpoint(**request.params)
  File "C:\Odoo16\server\odoo\http.py", line 696, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "C:\Odoo16\server\odoo\addons\web\controllers\dataset.py", line 42, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "C:\Odoo16\server\odoo\addons\web\controllers\dataset.py", line 33, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "C:\Odoo16\server\odoo\api.py", line 461, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "C:\Odoo16\server\odoo\api.py", line 448, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "C:\Odoo16\server\odoo\addons\sale_stock\models\sale_order.py", line 121, in write
    res = super(SaleOrder, self).write(values)
  File "C:\Odoo16\server\odoo\addons\mail\models\mail_thread.py", line 315, in write
    result = super(MailThread, self).write(values)
  File "C:\Odoo16\server\odoo\addons\mail\models\mail_activity_mixin.py", line 241, in write
    return super(MailActivityMixin, self).write(vals)
  File "C:\Odoo16\server\odoo\models.py", line 3769, in write
    fields[0].determine_inverse(real_recs)
  File "C:\Odoo16\server\odoo\fields.py", line 1377, in determine_inverse
    determine(self.inverse, records)
  File "C:\Odoo16\server\odoo\fields.py", line 100, in determine
    return needle(records, *args)
  File "c:\odoo16\server\odoo\difmiadiv16\batiment\bat_study\models\inh_sale_order.py", line 73, in _inverse_new_line_ids
    sale_order.order_line = [(6,0,sale_order.new_line_ids + sale_order.new_line_ids_zero)]
  File "C:\Odoo16\server\odoo\fields.py", line 1320, in __set__
    records.write({self.name: write_value})
  File "C:\Odoo16\server\odoo\addons\sale_stock\models\sale_order.py", line 121, in write
    res = super(SaleOrder, self).write(values)
  File "C:\Odoo16\server\odoo\addons\mail\models\mail_thread.py", line 315, in write
    result = super(MailThread, self).write(values)
  File "C:\Odoo16\server\odoo\addons\mail\models\mail_activity_mixin.py", line 241, in write
    return super(MailActivityMixin, self).write(vals)
  File "C:\Odoo16\server\odoo\models.py", line 3737, in write
    field.write(self, value)
  File "C:\Odoo16\server\odoo\fields.py", line 4215, in write
    return self.write_batch([(records, value)])
  File "C:\Odoo16\server\odoo\fields.py", line 4236, in write_batch
    return self.write_real(records_commands_list, create)
  File "C:\Odoo16\server\odoo\fields.py", line 4418, in write_real
    unlink(comodel.search(domain))
  File "C:\Odoo16\server\odoo\models.py", line 1509, in search
    return res if count else self.browse(res)
  File "C:\Odoo16\server\odoo\models.py", line 5085, in browse
    if not ids:
  File "C:\Odoo16\server\odoo\tools\query.py", line 217, in __bool__
    return bool(self._result)
  File "C:\Odoo16\server\odoo\tools\func.py", line 28, in __get__
    value = self.fget(obj)
  File "C:\Odoo16\server\odoo\tools\query.py", line 210, in _result
    self._cr.execute(query_str, params)
  File "C:\Odoo16\server\odoo\sql_db.py", line 313, in execute
    res = self._obj.execute(query, params)
  File "C:\Odoo16\python\lib\site-packages\psycopg2\extensions.py", line 121, in getquoted
    pobjs = [adapt(o) for o in self._seq]
  File "C:\Odoo16\python\lib\site-packages\psycopg2\extensions.py", line 121, in 
    pobjs = [adapt(o) for o in self._seq]
psycopg2.ProgrammingError: can't adapt type 'sale.order.line'

The above server error caused the following client error:
null

How can I resolve this problem or save / create my value before passing it on to my inverse method ?

Thanks for help