Book Image

Hands-on Full-Stack Web Development with GraphQL and React

By : Sebastian Grebe
Book Image

Hands-on Full-Stack Web Development with GraphQL and React

By: Sebastian Grebe

Overview of this book

React, one of the most widely used JavaScript frameworks, allows developers to build fast and scalable front end applications for any use case. GraphQL is the modern way of querying an API. It represents an alternative to REST and is the next evolution in web development. Combining these two revolutionary technologies will give you a future-proof and scalable stack you can start building your business around. This book will guide you in implementing applications by using React, Apollo, Node.js and SQL. We'll focus on solving complex problems with GraphQL, such as abstracting multi-table database architectures and handling image uploads. Our client, and server will be powered by Apollo. Finally we will go ahead and build a complete Graphbook. While building the app, we'll cover the tricky parts of connecting React to the back end, and maintaining and synchronizing state. We'll learn all about querying data and authenticating users. We'll write test cases to verify the front end and back end functionality for our application and cover deployment. By the end of the book, you will be proficient in using GraphQL and React for your full-stack development requirements.
Table of Contents (15 chapters)

Mutating data with Sequelize

Requesting data from our database via the GraphQL API works. Now comes the tough part: adding a new post to the Posts table.

Before we start, we must extract the new database model from the db object at the top of the exported function in our resolvers.js file:

const { Post, User } = db.models;

Currently, we have no authentication to identify the user that is creating the post. We will fake this step until the authentication is implemented in a later chapter.

We have to edit the GraphQL resolvers to add the new post. Replace the old addPost function with the new one, as shown in the following code snippet:

addPost(root, { post }, context) {
logger.log({
level: 'info',
message: 'Post was created',
});

return User.findAll().then((users) => {
const usersRow = users[0];

return Post.create({
...post,
...