Question

尝试使用findByIdAndUpdate更新MongoDB文档：

var landmarkModel = mongoose.model('landmark', landmarkSchema, 'landmarks');  
var lm = new landmarkModel();

//adding data to schema here, like: lm.name = req.body.name;

lm.findByIdAndUpdate(req.body._id, lm, function (err, landmark) {
    if (err)
       console.log(err);
    else{
       console.log(null, landmark);
    }
});

返回错误：Object lm has no method 'findByIdAndUpdate'

我尝试用lm.findByIdAndUpdate替换landmarkModel.findByIdAndUpdate值，但这也不起作用。我做错了什么？

Answer 1

findByIdAndUpdate是一种静态方法：

var landmarkModel = mongoose.model('landmark', landmarkSchema, 'landmarks');
var lm = req.body;

delete lm._id;

landmarkModel.findByIdAndUpdate(req.body._id, lm, console.log);

请注意，landmarkModel接受普通js个对象。

如果您已有mongoose个对象，则最好使用save代替：

var landmarkModel = mongoose.model('landmark', landmarkSchema, 'landmarks');

landmarkModel.findById(req.body._id, function (err, lm) {
  if (err) return next(err);

  //adding data to schema here, like: lm.name = req.body.name;

  lm.save(console.log);
});

Mongoose更新文档使用findByIdAndUpdate失败

1 个答案: