Currently have something like this in my mongoose application:

const user = await User.findById(request.params.id)

Whenever I console.log(user), I get the entire document object, alongside the _id: new ObjectId("idstring") property. There is no reference to id but rather to just _id.

However when I console.log(user.id) I get the returned _id in string format.

How is this possible? Do mongoose models automatically convert the objectID to a string when you call "id" to the object?

CodePudding user response：

Mongoose assigns each of your schemas an id virtual getter by default which returns the documents _id field cast to a string, or in the case of ObjectIds, its hexString.

Because of the virtuals, you are getting the results. So, id is a getter that gives the string's representation of the field _id.

Check here for documentation.