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Angular Services

You're reading from   Angular Services -

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Product type Paperback
Published in Feb 2017
Publisher Packt
ISBN-13 9781785882616
Length 294 pages
Edition 1st Edition
Languages
Tools
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Toc

Table of Contents (9) Chapters Close

Preface 1. Setting Up the Environment FREE CHAPTER 2. Introducing Wire-Frames 3. The Collector Service - Using Controllers to Collect Data 4. The Rating Service - Data Management 5. The Notifier Service - Creating Cron Jobs in Angular 6. The Evidence Tree Builder Service - Implementing the Business Logic 7. The Report Generator Service - Creating Controllers to Set Report Template 8. The Accuracy Manager Service - Putting It All Together

Updating the collector component


To see a service in action, first let's update our previous wire-frame and modify the template. Let's say we need to see a list of news headlines which we can select among them and (later in Chapter 4, The Rating Service – Data Management) decide which ones have the higher value (rate) for investigation.

Showing a list of news headlines means we have to implement a mechanism which loops through the available items and displays them. Open the Collector component first and create new properties as follows:

// app/collector/collector.component.ts 
import {Component} from '@angular/core'; 
@Component({ 
  selector: 'sh-collector', 
  templateUrl: './collector.html' 
}) 
 
export class CollectorComponent { 
  caption = "Some news worth investigating"; 
  headlines  = [ 
    "Lorem ipsum dolor sit amet",  
    "consectetuer adipiscing elit",  
    "Integer tincidunt Cras dapibus", 
    "Quia dolori non voluptas " 
  ]; 
} 

For now just use the hard-coded data. We...

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