Collection _id length?

omarallahham · November 4, 2015, 7:54pm

Can i change meteor collection _id generation to generate a 6 char id instead of 16 char ?

garrilla · November 4, 2015, 8:20pm

it’s 24 chracters

and it’s hard-coded

meteor/meteor/blob/master/packages/mongo/collection.js#L68


  transform: null,
  _driver: undefined,
  _preventAutopublish: false
}, options);


switch (options.idGeneration) {
case 'MONGO':
  self._makeNewID = function () {
    var src = name ? DDP.randomStream('/collection/' + name) : Random.insecure;
    return new Mongo.ObjectID(src.hexString(24));
  };
  break;
case 'STRING':
default:
  self._makeNewID = function () {
    var src = name ? DDP.randomStream('/collection/' + name) : Random.insecure;
    return src.id();
  };
  break;
}

dburles · November 5, 2015, 5:54am

That’s the mongo document id. Meteor ids can be generated via Random.id() and default to 17 characters. If you’re wanting a short id perhaps you can just add another field on insert like shortId and set it to Random.id(6)