Book Image

Full Stack Development with Angular and GraphQL

By : Ahmed Bouchefra
Book Image

Full Stack Development with Angular and GraphQL

By: Ahmed Bouchefra

Overview of this book

GraphQL is an alternative to traditional REST technology for querying Web APIs. Together with Angular and TypeScript, it provides a tech stack option for building future-proof web applications that are robust and maintainable at any scale. This book leverages the potential of cutting-edge technologies like GraphQL and Apollo and helps Angular developers add it to their stack. Starting with introducing full-stack development, you will learn to create a monorepo project with Lerna and NPM Workspaces. You will then learn to configure Node.js-based backend using GraphQL, Express, and Apollo Server. The book will demonstrate how to build professional-looking UIs with Angular Material. It will then show you how to create Web APIs for your frontend with GraphQL. All this in a step-by-step manner. The book covers advanced topics such as local state management, reactive variables, and generating TypeScript types using the GraphQL scheme to develop a scalable codebase. By the end of this book, you'll have the skills you need to be able to build your full-stack application.
Table of Contents (16 chapters)
1
Part 1: Setting Up the Development Environment, GraphQL Server, and Database
7
Part 2: Building the Angular Frontend with Realtime Support
13
Part 3: Adding Realtime Support

Guarding routes

Since we've already implemented auth, we'll need to protect the application's routes from non-authenticated users.

Not all pages should be protected; for example, the user's profile page could be made public so that users who do not yet have an account can find other users via search engines. If they have friends on the network, this will encourage them to sign up for an account.

Let's begin by creating an auth guard, as follows:

  1. Return to your Terminal and type the following command:
    ng g guard core/guards/auth/auth

You'll be prompted with Which interfaces would you like to implement?.

Press spacebar to select CanActivate, then Enter to confirm.

  1. Open the core/guards/auth/auth.guard.ts file and start by importing the auth service and Router, like this:
    import { ActivatedRouteSnapshot, CanActivate, Router, RouterStateSnapshot, UrlTree } from '@angular/router';
    import { AuthService } from 
      ...