Should I Use Schema.Types.ObjectId or Schema.ObjectId When Defining a Mongoose Schema

Question

It seems like defining my Schema this way:

var PossessionSchema = new mongoose.Schema({
  thing: {type: mongoose.Schema.Types.ObjectId, ref:\"Thing\"}
});
         


        

Answer 1

I know this is an old topic but I ran into some trouble in this area recently, so here's what I found in case anyone else's banging their heads against the wall:

Whenever you use a reference in your schema to an ObjectId, you MUST use mongoose.Schema.Types.ObjectId.

mongoose.Types.ObjectId should be used solely for its constructor when building new objectIds from a string hex or, as it's probably the most common use case, to validate a string as an ObjectId hex, say:

try {
  let oid = new mongoose.Types.ObjectId('XXXXXXXXX')
} catch (e) {
  console.error('not a valid ObjectId hex string ==> ', e)
}