Mongoose findByIdAndUpdate() or update() and increment(). How to increment __v?

Question

Is there the way to combine Model.findByIdAndUpdate and Model.increment() which increments mongoose native versionKey? Or Model.update() and any incrementation of __v?

This code doesn't increment __v

Station.update({ _id: req.params.id }, 
               { $set: req.body, $inc: { __v: 1 } }, 
               { multi: false },  callback);

but increments any custom Number field:

Station.update({ _id: req.params.id }, 
               { $set: req.body, $inc: { count: 1 } }, 
               { multi: false },  callback);

So far I've found only one way to increment __v:

Station.findById(req.params.id, function (err, station) {
    station.increment();  // this increments __v
    station.save(req.body, callback)
})

http://stackoverflow.com/questions/7334390/has-mongoose-support-findandmodify-mongodb-method — Dmitry Zagorulkin, Dec 29 '12 at 07:39

score 4 · Answer 1 · answered Dec 30 '12 at 20:34

It's possible that this is by design. In particular __v is a special mongoose internal key whose specific use is to prevent multiple save operations from colliding when an Array element of the document has positional changes. Atomic update operations by themselves aren't exposed to this risk, so in isolation they don't need to increment __v.

However it is possible to interleave atomic updates with the non atomic find/save constructs, so I submitted an issue for the developer to look at.

Mongoose findByIdAndUpdate() or update() and increment(). How to increment __v?

1 Answers1