Delete a key from a MongoDB document using Mongoose

Question

I\'m using the Mongoose Library for accessing MongoDB with node.js

Is there a way to remove a key from a document? i.e. not just set the value to n

Answer 1

Mongoose document is NOT a plain javascript object and that's why you can't use delete operator.(Or unset from 'lodash' library).

Your options are to set doc.path = null || undefined or to use Document.toObject() method to turn mongoose doc to plain object and from there use it as usual. Read more in mongoose api-ref: http://mongoosejs.com/docs/api.html#document_Document-toObject

Example would look something like this:

User.findById(id, function(err, user) {
    if (err) return next(err);
    let userObject = user.toObject();
    // userObject is plain object
});