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
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

The rating wire-frame


Collecting articles and news is not enough and we want to know which entry has the highest score for investigation. The question is how do we rate them and what measures and factors should we use in our rating mechanism.

Initially, we can come up with some basic rules. For example, if the source of the news or article is a well known news agency, we should give them a different rank compared to the articles coming from a personal web log. Or if the news title has some trending keywords - which we can find from Google Trends, for example - then we should give them a higher rank compared to general and bland titles.

Also the date of the entry matters, too. We don't want to waste our resources on investigating old news. So everything about an entry counts.

Once again, we will spend a whole chapter on dealing with all of these business rules. For now let's just create the Rating component and modify the root component so it can recognize it.

The rating component

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