Book Image

Angular Services

Book Image

Angular Services

Overview of this book

A primary concern with modern day applications is that they need to be dynamic, and for that, data access from the server side, data authentication, and security are very important. Angular leverages its services to create such state-of-the-art dynamic applications. This book will help you create and design customized services, integrate them into your applications, import third-party plugins, and make your apps perform better and faster. This book starts with a basic rundown on how you can create your own Angular development environment compatible with v2 and v4. You will then use Bootstrap and Angular UI components to create pages. You will also understand how to use controllers to collect data and populate them into NG UIs. Later, you will then create a rating service to evaluate entries and assign a score to them. Next, you will create "cron jobs" in NG. We will then create a crawler service to find all relevant resources regarding a selected headline and generate reports on it. Finally, you will create a service to manage accuracy and provide feedback about troubled areas in the app created. This book is up to date for the 2.4 release and is compatible with the 4.0 release as well, and it does not have any code based on the beta or release candidates.
Table of Contents (15 chapters)
Angular Services
About the Author
About the Reviewer
Customer Feedback

Updating the Bootstrap file

Now before checking the results in the browser, there are a few updates that we need to do. First, open the app.modules.ts file inside the src/app folder and notice the import lines. The red color for the imported class means it does not exist:

        import {About} from './about/about'; 

That is right, because we removed all previous definitions in the seed project, so remove all troubled lines. That includes the following imports:

        import {About} from './about/about'; 
        import {Home} from './home/home'; 
        import {RepoBrowser} from './github/repo-browser/repo-browser'; 
        import {RepoList} from './github/repo-list/repo-list'; 
        import {RepoDetail} from './github/repo-detail/repo-detail'; 


Please notice that we don't need to mention the extension (.ts) for the file we are importing.

When you do so, the 'Declarations' start to complain. So remove all missing elements from that line, too. After all of these changes, the app.modules...