openerp - how to return domain on onchange? -


what need once select patient_id namelab of patient when patient == patient_id appear

class labinvoice (models.model):     _name = "lab.invoice"     name = fields.char(string='invoice reference',  default=lambda self: _('new'), store=true)     patient_id = fields.many2one(string='patient',comodel_name='medical.patient',required=true, store=true )     order_line = fields.one2many('lab.order.line', 'order_id', string='order lines', copy=true,  )       namelab = fields.many2one('medical.lab.patient',related='order_line.namelab',string='name lab', store=true)     patient = fields.many2one('medical.patient',related='order_line.patient',string='name patient', store=true, readonly=true ) 
class laborderline(models.model):     _name = 'lab.order.line'     _description = 'labs order line'     name = fields.text(string='description', required=true)     order_id = fields.many2one('lab.invoice', string='invoice reference', required=true, ondelete='cascade', index=true, copy=false)       namelab = fields.many2one(         string='lab',         comodel_name='medical.lab.patient',         required=true,         ondelete='cascade',     )      patient= fields.many2one(         'medical.patient',         string='patient',          related='namelab.patient_id',          readonly=true,         required=true,     ) 
                        <page string="order lines">                             <field name="order_line" mode="tree,kanban" >                                  <tree  editable="bottom" >                                      <field name="namelab"  />                                     <field name="patient" />                                      <field name="doctor_id"/>                                      <field name="test_prix"/>                                      <field name="test_type_id" />                                      <field name="invoice_status"/>                                      <field name="state" />                                  </tree>

i tried onchange in vain

    @api.onchange('patient_id')     def onchange_patient_id(self):         if self.patient_id:             self.order_line = false             return {'domain':{'namelab':[('namelab.patient','=',self.patient_id.id)]}}

you need use domain on field definition in xml.

<field name="namelab" domain="[('patient', '=', patient)]"/>

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