I have a form view(model1) with a list for the One2many field that is related to model2. On the related model (model2) that is shown as list I have a field that has an onchange method. That method creates a record in model3.

Models:  model1: task, model2: timesheet, model3: anwsers

Relation

model1 One2many model2

model2 Many2one model3

With this onchange on a field in model2 I can create a record in model3. Now I would like to return an window action of the model3 created record to show a popup in the form view of model1.

The model2 method:

answer_id = fields.Many2one('tabla.customer.answers')


# FIXME Test za vnos odgovorov za stranko
@api.onchange('tabla_timesheet_type_id')
@api.multi
def change_timesheet_type(self):
    for rec in self:
        if rec.tabla_timesheet_type_id:            
            try:
                rec.answer_id.sudo().create({'timesheet_name': rec.name})
            except Exception as e:
                _logger.error(u'Error on creating answer: {}'.format(e))

            try:
                action = self.env.ref('tabla_project_ticket.action_show_answer_form').read()[0]
                action['res_id'] = rec.answer_id.id
                return action
            except Exception as e:
                _logger.error(u'Error on getting answer action: {}!'.format(e))

I really don't know how to describe well what I want. Hope that this is possible.