猫鼬更新文档使用findByIdAndUpdate失败 [英] Mongoose update document Fail with findByIdAndUpdate

问题描述

尝试使用findByIdAndUpdate更新MongoDB文档:

Trying to update MongoDB document using findByIdAndUpdate:

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landmarkModel.findByIdAndUpdate换出lm.findByIdAndUpdate值，但这也不起作用.我在做什么错了?

I have tried swapping out the lm.findByIdAndUpdate value with landmarkModel.findByIdAndUpdate but that doesn't work either. What am I doing wrong?

推荐答案

findByIdAndUpdate是静态方法:

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接受普通的js对象.

Note that landmarkModel accepts plain js objects.

如果您已经有一个mongoose对象，那么最好改用save:

If you already have a mongoose object then it's best to use save instead:

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);
});

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