Mongoose/Mongodb: Exclude fields from populated query data

Question

I use the following mongoose query in a MEAN-environment to find and output a particular author and his corresponding books.

Author
.findOne({personcode: co         


        

Answer 1

To exclude individually

User.findOne({_id: userId}).select("-password")

To exclude using the schema

var userSchema = mongoose.Schema({
  email: {
    type: String,
    required: true,
    unique: true,
  },
  password: {
    type: String,
    required: true,
    select: false,
  },
});

or this will also work

db.collection.find({},{"field_req" : 1,"field_exclude":0});