Document Database References

In a document database, references are stored in both documents referencing each other.

model/user.js

const userSchema = new mongoose.Schema({
  username: String,
  name: String,
  passwordHash: String,
  notes: [
    {
      type: mongoose.Schema.Types.ObjectId,
      ref: 'Note'
    }
  ],
})

model/note.js

const noteSchema = new mongoose.Schema({
  content: {
    type: String,
    required: true,
    minlength: 5
  },
  date: Date,
  important: Boolean,
  user: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User'
  }
})