how to get creation date from object id in mongoose?

Question

I understand from ObjectId — MongoDB Manual that the first 4 bytes of any mongodb object id is the creation timestamp.

Any well supported way of extracting that information from mongoose?

Answer 1

I believe ObjectId has a getTimestamp() method; e.g.

_id.getTimestamp() 

Answer 2

You can create a virtual 'created' property on the mongoose schema that uses the _id to get the creation timestamp. Just add:

YourMongooseSchema.virtual('created').get( function () {   if (this["_created"]) return this["_created"];   return this["_created"] = this._id.getTimestamp(); });