Book Image

Elevating React Web Development with Gatsby

Book Image

Elevating React Web Development with Gatsby

Overview of this book

Gatsby is a powerful React static site generator that enables you to create lightning-fast web experiences. With the latest version of Gatsby, you can combine your static content with server-side rendered and deferred static content to create a fully rounded application. Elevating React Web Development with Gatsby provides a comprehensive introduction for anyone new to GatsbyJS and will help you get up to speed in no time. Complete with hands-on tutorials and projects, this easy-to-follow guide starts by teaching you the core concepts of GatsbyJS. You'll then discover how to build performant, accessible, and scalable websites with the GatsbyJS framework. Once you've worked through the practical projects in the book, you'll be able to build anything from a personal website to large-scale applications with authentication and make your site rise through those SEO rankings. By the end of this Gatsby development book, you'll be well-versed in every aspect of the tool's performance and accessibility and have learned how to build client websites that your users will love.
Table of Contents (18 chapters)
1
Part 1: Getting Started
7
Part 2: Going Live
12
Part 3: Advanced Concepts

Site-wide authentication using context within Gatsby

There may be situations where you want the entirety of your Gatsby site to be behind authentication. For example, you may have made a documentation site only meant for employees of your company. Let's look at how we can use context to turn every page into a private route:

  1. First, let's create a login component in the components folder. Call this file Login.js and add the following code to it:
    import React from "react";
    const Login = ({login}) => {
      return <button onClick={login}>Login</button>;
    };
    export default Login;

    You'll notice that, unlike the last Login component we created, we are not retrieving the login function from the context. The reason for this will become clear when we create the context.

  2. Create a folder called context in src.
  3. Create a file in context called auth-context.js and add the following code:
    import React, { useState, useContext } from "react&quot...