Hi,

I need help to make one2many field be readonly when button clicked.
this my code ;

<form string="Sesi Parkir">
	<header>
		<button name="action_close" type="object" string="Sesi Berakhir" states="in" class="btn-primary" />
		<field name="state" widget="statusbar" statusbar_visible="in,out"/>
	</header>
    parking_log_ids=fields.One2many('parking_log','parking_log_id',string='Log Parkir')


@api.multi
    def action_close(self):
            self.write({'state': 'out'})
            self.write({'end_time':fields.Datetime.now(self)})
            self.write({'parking_log_ids':'readonly=True'}) # i try like this but nothing happen :v