Mongoose findOneAndUpdate Upsert _id null?

Question

I\'d like to have a single method that either creates or updates a document for a policy. Searching and trying different techniques like this one, I have come up with a nul

Answer 1

I had this same problem and couldn't figure out a way to get it to work. I ended up writing my own upsert method like so....

var upsert = function(model, data, f){
  if (!data._id) {
    model.create(data, f);
  } else {
    var id = data._id;
    delete data._id;
    model.findOneAndUpdate({_id: id}, data, f);
  }
}

That allows me to call it for any of my models with one line of code...

upsert(Team, team, f);

There might be a better way to do it, but this is working for me. I can do updates and inserts and I don't get a null _id on insert.