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Vue.js 3 Cookbook

You're reading from   Vue.js 3 Cookbook Discover actionable solutions for building modern web apps with the latest Vue features and TypeScript

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Product type Paperback
Published in Sep 2020
Publisher Packt
ISBN-13 9781838826222
Length 562 pages
Edition 1st Edition
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Author (1):
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Heitor Ramon Ribeiro Heitor Ramon Ribeiro
Author Profile Icon Heitor Ramon Ribeiro
Heitor Ramon Ribeiro
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Table of Contents (13) Chapters Close

Preface 1. Understanding Vue 3 and Creating Components 2. Introducing TypeScript and the Vue Ecosystem FREE CHAPTER 3. Data Binding, Form Validations, Events, and Computed Properties 4. Components, Mixins, and Functional Components 5. Fetching Data from the Web via HTTP Requests 6. Managing Routes with vue-router 7. Managing the Application State with Vuex 8. Animating Your Application with Transitions and CSS 9. Creating Beautiful Applications Using UI Frameworks 10. Deploying an Application to Cloud Platforms 11. Directives, Plugins, SSR, and More 12. Other Books You May Enjoy

Creating the middleware

All vue-router middleware can also be referred to as navigation guards, and they can be attached to the application route changes. Those changes have some hooks that you can apply to your middleware. The authentication middleware takes place before the router changes, so we can handle everything and send the user to the correct route.

  1. In the src/router folder, create a new folder called middleware, then create and open a new file called authentication.js.
  1. In this file, we will create a default export function that will have three function parameters – to, from, and next. The to and from parameters are objects, and the next parameter is a callback function:
export default (to, from, next) => {
};
  1. We need to check whether the route that we are being redirected to has an authenticated meta property set to true and whether we have a sessionStorage item with the 'auth' key. If we pass those validations, we can execute the next callback:
if...
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