Hi, there,

try this(for example):

@api.model
def name_get(self):
    _logger.info('----entry sale_order_service_type_line_improved name_get----')
    result = []
    # for rec in self:
    #     result.append((rec.id, "{}-{}".format(rec.id, rec.name)))
    return result

for Many2one filed, it will call the name_get function, which you can rewrite.

Hope it is useful.