Book Image

Supercharging Node.js Applications with Sequelize

By : Daniel Durante
4 (1)
Book Image

Supercharging Node.js Applications with Sequelize

4 (1)
By: Daniel Durante

Overview of this book

Continuous changes in business requirements can make it difficult for programmers to organize business logic into database models, which turns out to be an expensive operation as changes to the database may result in errors and incongruity within applications. Supercharging Node.js Applications with Sequelize helps you get to grips with Sequelize, a reliable ORM that enables you to alleviate these issues in your database and applications. With Sequelize, you'll no longer need to store information in flat files or memory. This book takes a hands-on approach to implementation and associated methodologies for your database that will have you up and running in no time. You'll learn how to configure Sequelize for your Node.js application properly, develop a better sense of understanding of how this ORM works, and find out how to manage your database from Node.js using Sequelize. Finally, you'll be able to use Sequelize as the database driver for building your application from scratch. By the end of this Node.js book, you'll be able to configure, build, store, retrieve, validate, and associate your data from a database to a Node.js application.
Table of Contents (16 chapters)
1
Part 1 – Installation, Configuration, and the Basics
4
Part 2 – Validating, Customizing, and Associating Your Data
10
Part 3 – Advanced Queries, Using Adapters, and Logging Queries

Putting it all together

Now that we have gone over the core tenets of using transactions with Sequelize, we can begin adding to our Avalon Airlines project. Our business partner just informed us that the investors want a small demonstration for booking a flight without processing a payment. For this task, we will need to add a couple of new files, update the BoardingTicket and FlightSchedule models, add new routes to our express application, and install a new Node.js package.

First, let us begin by adding the new Node.js package that the project will require. This package is known as Luxon (https://moment.github.io/luxon/), which is a date-and-time JavaScript library. Use the following command to add the package:

npm i --save luxon

Next, we will want to modify a life cycle event that exists within the BoardingTicket model located in models/boardingticket.js by adding/changing the following highlighted code:

BoardingTicket.beforeSave('checkSeat', async (ticket...