Book Image

Angular Services

By : Sohail Salehi
Book Image

Angular Services

By: Sohail Salehi

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

Rendering The Reports

Looking at the report.html template, we are using accordion structure for report template configuration and tab structure for each individual report. The configuration tab has the active class by default. So when we open the report page, we see that the tab has been opened already.

Now what we need is a mechanism to generate tabs for each report template dynamically. That means we need to sense any update to Firebase and the moment an object is created/updated/deleted reflect that change on screen instantly. Since we already have an 'items' property associated with our Firebase object, implementing the first part is easy. Simply remove all hard-coded values from report.html and modify it as follows:

# src/app/report/report.html 
  <ul class="nav nav-tabs"> 
    <li *ngFor="let report of items"> 
      <a data-toggle="tab" href="#{{report.$key}}">