node.js - Argument passed in must be a single String of 12 bytes

Question

mongoDB collection contains the following data

db.stack.find()
{ "_id" : "8GieRu" }

The _id is not single String of 12 bytes,

As per the MongoDB document of [ObjectID][1], id (string) – Can be a 24 byte hex string, 12 byte binary string or a Number.

Using Mongoose this collection is accessed using this Json

{"_id" : new mongoose.Types.ObjectId("8GieRu")}

and throws the below error

/node_modules/mongoose/node_modules/mongodb/node_modules/bson/lib/bson/objectid.js:35
    throw new Error("Argument passed in must be a single String of 12 bytes or
          ^
Error: Argument passed in must be a single String of 12 bytes or a string of 24 hex characters
    at new ObjectID (/node_modules/mongoose/node_modules/mongodb/node_modules/bson/lib/bson/objectid.js:35:11)

  [1]: http://mongodb.github.io/node-mongodb-native/api-bson-generated/objectid.html

Mongoose is strictly checking the ObjectId of fixed length, how can i pass Object_id using mongoose with the given length

Answer 1

You mix two concepts here.

While "_id" can have any value (even subdocument like {firstName:'Foo',lastName:'Simpson'}, "ObjectId" has a fixed set of types with some restrictions, as the error message correctly states.

So your statement should be

{'_id':'putWhatEverYouWantHere'}