How to set update timestamp in upsert operation in Mongoose?

You can't do it automatically. You can do it using $set: { timestamp: Date.now() } on upsert.

There is a closed issue in mongoose bugtracker discussing this, here: defaults are ignored on upsert

A little late, but hope that helps someone!

you could use a pre save hook, there are a number of flags like .isNew or .isModified you can use.

self.schema.pre('save', function (next) {  if (this.isNew) {    this.updated = Date.now();  }  return next();}

For the creation date a timestamp can be extracted from the ObjectId

node.js mongodb mongoose upsert

for insert

db.test.insert({ts:new Date()})

for upsert

db.test.update({"_id" : ObjectId("540815fa802a63ddca867bc0")},{$set:{ts:new Date()}},{upsert:1})

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