I would like to ask a question in this post but I don't have the need reputation to ask. So I created this post. The question is: Is possible to referencing other schema in mongoose using another variable type? (e.g. Number, String, etc). I know you need the ref flag in specification but I don't know if mongoose is limited to reference by only using Schema.Types.ObjectId type.

Any clarification will be greatly recieved!

Thanks.

CodePudding user response：

Yes, it is possible to use types other than ObjectId for refs, but Mongoose recommends using ObjectIds unless you have a good reason to do otherwise.

From the documentation for Populate:

Note: ObjectId, Number, String, and Buffer are valid for use as refs. However, you should use ObjectId unless you are an advanced user and have a good reason for doing so.