mongoose referenced schema

1const author = new Person({
2  _id: new mongoose.Types.ObjectId(),
3  name: 'Ian Fleming',
4  age: 50
5});
6
7author.save(function (err) {
8  if (err) return handleError(err);
9
10  const story1 = new Story({
11    title: 'Casino Royale',
12    author: author._id    // assign the _id from the person
13  });
14
15  story1.save(function (err) {
16    if (err) return handleError(err);
17    // that's it!
18  });
19});

1var mongoose = require('mongoose')
2  , Schema = mongoose.Schema
3
4var eventSchema = Schema({
5    title     : String,
6    location  : String,
7    startDate : Date,
8    endDate   : Date
9});
10
11var personSchema = Schema({
12    firstname: String,
13    lastname: String,
14    email: String,
15    gender: {type: String, enum: ["Male", "Female"]}
16    dob: Date,
17    city: String,
18    interests: [interestsSchema],
19    eventsAttended: [{ type: Schema.Types.ObjectId, ref: 'Event' }]
20});
21
22var Event  = mongoose.model('Event', eventSchema);
23var Person = mongoose.model('Person', personSchema);
24

1User = new Schema({
2    places:[{type: Schema.Types.ObjectId, ref:'Place'}],
3    shouts:[{type: Schema.Types.ObjectId, ref:'Shout'}]
4});
5Place = new Schema({
6    name:String,
7    description:String,
8});
9Shout = new Schema({
10    content:String,
11});