CODEWITHSUNDEEP
node.jsmongodbmongoosedatabase
Eric Martindale
Eric Martindale

Reputation: 1106

In Mongoose (mongodb node.js), how to update existing values and insert missing, without removing unspecified values?

I'm trying to maintain an instantaneous statistics block, e.g.;

model = {
  id: 123,
  stats: {
    fooCount: 117,
    barCount: 175,
    bazCount: 654
  }
}

...and be able to update an existing record, but only specify the new values, like this:

model.update({
  '_id': 123,
    stats: {
      fooCount: 118 
    }
});

...without blowing away the old values in stats. Is this possible without writing too much more code around my updates?

Upvotes: 4

Views: 5024

Answers (1)

clexmond
clexmond

Reputation: 1549

You should be using a $set operator in your update like so:

var conditions = { _id: 123 };
var update = { $set: { fooCount: 118 }};
var options = { upsert: true };

model.update(conditions, update, options, callback);

There are many more operators that will be of interest on that MongoDB page as well.

Upvotes: 6

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