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Angular for Enterprise Applications - Third Edition

You're reading from  Angular for Enterprise Applications - Third Edition

Product type Book
Published in Jan 2024
Publisher Packt
ISBN-13 9781805127123
Pages 592 pages
Edition 3rd Edition
Languages
Author (1):
Doguhan Uluca Doguhan Uluca
Profile icon Doguhan Uluca

Table of Contents (14) Chapters

Preface 1. Angular’s Architecture and Concepts 2. Forms, Observables, Signals, and Subjects 3. Architecting an Enterprise App 4. Creating a Router-First Line-of-Business App 5. Designing Authentication and Authorization 6. Implementing Role-Based Navigation 7. Working with REST and GraphQL APIs 8. Recipes – Reusability, Forms, and Caching 9. Recipes – Master/Detail, Data Tables, and NgRx 10. Releasing to Production with CI/CD 11. Other Books You May Enjoy
12. Index
Appendix A

Implementing CRUD services with caching

We need a service that can perform CRUD operations on a user so that we can implement a user profile. However, the service must be robust enough to withstand common errors. After all, it is very bad UX when users unintentionally lose the data they typed. Form data can be reset due to circumstances outside of a user’s control, like a network or validation error, or user errors, like hitting the back or refresh button by mistake. We will create a user service leveraging the CacheService we built in Chapter 5, Designing Authentication and Authorization, so keep a copy of user data in localStorage while the server processes it. The service will implement the following interface and, as always, reference the abstract IUser interface over the concrete user implementation:

export interface IUserService {
  getUser(id: string): Observable<IUser>
  updateUser(id: string, user: IUser): Observable<IUser>
  getUsers(
    pageSize...
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