How to create a virtual field in Mongoose?

Question

JavaScript

hello world! I have a User model, it is necessary to create a virtual field in it, which will receive the referrals of this user (those with referalUserName = userName), how to implement this? It's not clear from the Mongoose documentation :)

const mongoose = require('mongoose'),
  Schema = mongoose.Schema;

const userSchema = new Schema({
  name: String,
  password: String,
  email: String,
  userName: String,
  referalUserName: String,
  referalId: String
});



userSchema.virtual('refs', {
  ref: 'User',
  localField: 'referalUserName',
  foreignField: 'userName'
});


 const User = mongoose.model("User", userSchema);


 User.find({}).populate('refs').exec(function(error, referalList) {

 });

Answer 1

I think here we need not a virtual field, but populate mongoosejs.com/docs/populate.html