lean query returning full objectid?

[Mongo Rookie]

I am storing references to other documents in other collections.  I am storing an ObjectId for each of these references.  I.E.

doc = {

  _id: ObjectId(......),

  name: 'something',

  type: 'foo',

  otherThing: ObjectId(.....)

  anotherThing: ObjectId(....)

}

When I get a list of docs back from the database with a lean query the ObjectId's are still ObjectId objects.  However when I format as JSON the turn into strings.  Should a lean query return more of a 'lean' ObjectId?

[Jason Crawford]

They're ObjectIds in the Mongo database—that's not something Mongoose adds. I think “lean” just means that Mongoose doesn't add its own wrapper.

When you format as JSON they turn into strings because there's no such thing as an ObjectId in JSON.

Basically, I think this is a difference between what types MongoDB supports and what JSON supports; they're not exactly the same.

Hope that helps,

Jason

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Blog: http://blog.jasoncrawford.org  |  Twitter: @jasoncrawford

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