Meteor returns invalid hexadecimal string error trying to create ObjectID?

Question

I'm inserting some stuff into the database and updating it elsewhere using jQuery (give me a break, I'm new), after which I need to be able to click it and display some UI stuff, which means getting the ID. So I set the ID variable and then try and and then try and use it in the click event:

...

"click .message-entry" : function (e) {
    var id = this._id || new Meteor.Collection.ObjectID(newMessageId);
    Session.set('singleMessageId', id);
},

...

Should work in principle, however I get the following error returned:

Uncaught Error: Invalid hexadecimal string for creating an ObjectID

A breakpoint reveals that the ID is both a string and the ID of the newly inserted document. What could be going wrong here?

(give me a break, I'm new) ?? So you are aware this may be the wrong approach, but feel it's more important to hack this together than possibly be shown a better approach? Inserting/updating items in the db and displaying them is a trivial task when you follow the established patterns. — JeremyK
– JeremyK, Commented Oct 19, 2015 at 20:44
Anyway, what is the newMessageId variable you are passing to Meteor.Collection.ObjectID? — JeremyK
– JeremyK, Commented Oct 19, 2015 at 20:45
@JeremyK it's for a personal project that I need to finish asap. The variable is the ID string of the inserted document as mentioned in the question. — styke
– styke, Commented Oct 19, 2015 at 21:32

Dean Brettle · Accepted Answer · 2015-10-20 05:09:54Z

7

By default, Meteor doesn't use Mongo's hexadecimal object IDs. You could either tell Meteor to use Mongo style IDs by passing {idGeneration: 'MONGO'} into new MongoCollection(), or (probably more easily) just use newMessageID instead of new Mongo.ObjectID(newMessageID), if the value of newMessageID is the _id returned by insert().

answered Oct 20, 2015 at 5:09

Dean Brettle

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