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

Using Apollo with TypeORM

After we've created the entities and inserted some test data, we'll look at how to integrate Apollo with TypeORM. In this section, we'll define our GraphQL resolvers, which are functions that will be called when we send queries and mutations to our GraphQL endpoint:

  1. First, you need to change back the user and author fields on the Post, Comment, and Like types of our GraphQL schema, in the src/graphql/schema.graphql file, to the type of User instead of ID:
    author: User!
    user: User!
  2. Additionally, change the type of the post field from ID to Post in the Comment and Like types:
    post: Post! 

Before implementing our schema resolvers, we need to create the types for ensuring the type safety of our resolvers' code. Fortunately, we don't have to do this manually. Instead, we can use GraphQL Code Generator, which is a tool for generating code from your GraphQL schema and operations with a simple CLI. For additional information...