保存或更新Mongoose

[sevengong]

请问有没有一个很好的方式来保存或更新一个在mongoose里的文档？ 就像下面这个

  let campaign = new Campaign({ title: req.body.title, market: req.body.market, logo: req.body.logo, additional_question_information: question, status: status }); campaign.saveOrUpdate().then(function() { ... }