javascript - How to create ObjectId in Mongoose 4.0.x from Hex string? - Stack Overflow

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mongoose.mongo.Types.ObjectId does not have fromString or fromHexString functions. It seems that new mongoose.mongo.Types.ObjectId(hexString) does not create an object id either.

var id = new mongoose.Types.ObjectId(hexString);
db.Record.find({_id:id }, function (err, campaign){
    if(err) console.log(err);
    callback(campaign);
});

mongoose.mongo.Types.ObjectId does not have fromString or fromHexString functions. It seems that new mongoose.mongo.Types.ObjectId(hexString) does not create an object id either.

var id = new mongoose.Types.ObjectId(hexString);
db.Record.find({_id:id }, function (err, campaign){
    if(err) console.log(err);
    callback(campaign);
});

• javascript
• node.js
• mongodb
• mongoose
• objectid

Share Improve this question Follow asked Apr 28, 2015 at 16:40 swoggerswogger 1,11911 gold badge1414 silver badges3030 bronze badges 4

• And what's hexString? ObjectId generally accepts hexadecimal strings ? – adeneo Commented Apr 28, 2015 at 16:43
• 2 I would venture to guess that your problem isn't that campaign is null, but rather that it's returning an array and you're trying to access the properties of the document against the array, not a single document. Change your query to use findById. If that's not the case, what's the value of id before the query is executed? – Brian Shamblen Commented Apr 28, 2015 at 17:56
• returns empty array. Tired find one and findById still no success. – swogger Commented Apr 29, 2015 at 10:20
• @adeneo - hex string: '553f8a4286f5c759f36f8e5b' – swogger Commented Apr 29, 2015 at 10:21

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1 Answer 1

Sorted by: Reset to default 6

I finally found the method you're looking for. The mongoose.Types.ObjectId class has a static function called createFromHexString, which returns an instance of an ObjectId.

var id = mongoose.Types.ObjectId.createFromHexString(hexString);
db.Record.findOne({_id: id}, function (err, campaign){
    if(err) console.log(err);
    callback(campaign);
});

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