Odoo:onchange方法中向One2many字段添加一些新记录

@api.onchange('one_field1')
def onchange_my_field(self):
old_ids =self.line_ids_field.ids # one2many字段
new_line = [(0, 0, {})]
old_record = [(4, each_old_id ) for each_old_id in old_ids ]
self.line_ids_field = old_record + new_line