Add field to DB model

Introduction

As you know, before using mongoDB databases, you should first define a model schema. The schema defines the model’s data types and enables you to take actions related to the DB (save, delete, update, etc.).

Schemas defined using mongoose provide a straightforward, schema-based solution through which you can model your application data. For more information on mongoose, see the official docs.

note

For the example below, we will take a look at the User schema, located in server > models > User.js.

Example

Once in the User.js file, you’ll find a few things:

• User schema.
• Password encryption function.
• Token generator function.
• Find user by credentials function.

User schema example

const userSchema = mongoose.Schema({
  email: {
    type: String,
    required: true,
    unique: true,
    lowercase: true,
  },
  password: {
    type: String,
    required: true,
    minLength: 7,
  },
  resetToken: String,
  resetTokenExpiration: Date,
});

note

To make use of a new data field on the server, please add a corresponding schema first. Only then should you use it as you wish. Be aware that creating a definitely new model is also a possibility.