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mongodb - Node + Mongoose: Get last inserted ID?

I want to retrieve the last inserted _id, using mongoose as MongoDB wrapper for node.js. I've found the following tutorial, but I can't change any node modules because the app runs on a public server:

Getting "Last Inserted ID" (hint - you have to hack Mongoose)

Any other ideas? This what I want to do:

  • Insert new user
  • Get user's _id value
  • Set a new session based on user's id
  • Redirect to /

Thanks!

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I'm using mongoose version 1.2.0 and as soon as I created a new instance of a mongoose model, the _id is already set.

coffee> u = new User()
[object Object]
coffee> u._id
4dd68fc449aaedd177000001

I also verified that after I call u.save() the _id remains the same. I verified via MongoHub that this is indeed the real ID saved into MongoDB.


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