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Angular for Enterprise-Ready Web Applications

You're reading from   Angular for Enterprise-Ready Web Applications Build and deliver production-grade and cloud-scale evergreen web apps with Angular 9 and beyond

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Product type Paperback
Published in May 2020
Publisher Packt
ISBN-13 9781838648800
Length 824 pages
Edition 2nd Edition
Languages
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Author (1):
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Doguhan Uluca Doguhan Uluca
Author Profile Icon Doguhan Uluca
Doguhan Uluca
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Toc

Table of Contents (19) Chapters Close

Preface 1. Introduction to Angular and Its Concepts 2. Setting Up Your Development Environment FREE CHAPTER 3. Creating a Basic Angular App 4. Automated Testing, CI, and Release to Production 5. Delivering High-Quality UX with Material 6. Forms, Observables, and Subjects 7. Creating a Router-First Line-of-Business App 8. Designing Authentication and Authorization 9. DevOps Using Docker 10. RESTful APIs and Full-Stack Implementation 11. Recipes – Reusability, Routing, and Caching 12. Recipes – Master/Detail, Data Tables, and NgRx 13. Highly Available Cloud Infrastructure on AWS 14. Google Analytics and Advanced Cloud Ops 15. Another Book You May Enjoy
16. Index
Appendix A: Debugging Angular 1. Appendix B: Angular Cheat Sheet

Custom controls with ControlValueAccessor

So far, we've learned about forms using standard form controls and input controls provided by Angular Material. However, it is possible for you to create custom user controls. If you implement the ControlValueAccessor interface, then your custom controls will play nicely with forms and the ControlValueAccessor interface's validation engine.

We will be creating the custom rater control shown in the following screenshot, and will place it as a control on the first step of ProfileComponent:

Figure 11.12: The lemon rater user control

User controls are inherently highly reusable, tightly coupled, and customized components to enable rich user interactions. Let's implement one.

Implementing a custom rating control

The lemon rater will highlight the number of lemons selected dynamically as the user interacts with the control in real time. As such, creating a high-quality custom control is an expensive endeavor...

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