CODEWITHSUNDEEP
angulartypescriptangular2-highcharts
Emile Cantero
Emile Cantero

Reputation: 2053

Angular2-highcharts with observables in Angular 4 project

I am trying to create a chart working with observables comming from http request, the following code is working with some fake datas I just would like to replace them by true datas comming from a backend-end script here's my code:

my app.ts:

export class MyVerticalchartComponent  {


   @Input() showMePartially: boolean;

  options: Object;

  constructor(public userService3: UserService3) {

       this.options = {
        title : { text : '' },
        chart: {  type: 'area' },
        legend: { enabled: false },
        credits: { enabled: false },
        xAxis: { type: 'datetime',
              //    startOnTick: true,
              //    endOnTick: true,
              //    tickInterval: 24 * 3600 * 1000,
            },
                  dateTimeLabelFormats: {
            second: '%H:%M:%S',
            minute: '%H:%M:%S',
            hour: '%H:%M:%S',
            day: '%H:%M:%S',
            week: '%H:%M:%S',
            month: '%H:%M:%S',
            year: '%H:%M:%S'
        },
        yAxis: { min: 0,
          max: 100 },
        plotOptions: {
          series: {
          //  pointStart: 0,
              color: '#648e59',
              fillOpacity: 0.8,
              fillColor: '#648e59'
                  }
        },
       series: [{
          name: 'Someone1',
          data: [],  // res.json
        }]
    };
  }

      public ngOnInit () {
      this.userService3.getData().subscribe((data) => {
       this.options.series[0].data.operating_details = data;
       console.log(data);
  });

} }

my app.html:

 <chart [options]="options">
      <series>
     </series>
  </chart>

my http service.ts:

export interface User3 {
 data: any;
}
const usersURL = 'http://my.super.backend.script.com';

@Injectable() export class UserService3 {

users3: Observable;

constructor (public http: Http) {

        getData() {

 const tick3$ = Observable.timer(100, 60000);

     return tick3$.flatMap(() => this.http.get(usersURL)).map(res => 
     res.json()).publishBehavior(<User3[]>[]).refCount();



 }
    }

my json looks like:

  "operating_details":[[1497837618,0],[1497837738,0],[1497837858,0],
  [1497837978,0],[1497838098,0],[1497838218,0],[1497838338,0],
  [1497838458,0],[1497838578,0],[1497838698,0],[1497838818,0],
  [1497838938,0],[1497839058,0],[1497839178,0],[1497839298,0],
  [1497839418,0],[1497839538,0],[1497839658,0],[1497839778,0]]

Upvotes: 0

Views: 830

Answers (1)

LLai
LLai

Reputation: 13406

typically you would define a method in the service file that sets up the http request

getData(){
    return this.http.get(usersUrl)
        .map(res => res.json());
}

then in your component app.ts you would subscribe to the observable.

ngOnInit(){
    this.userService3.getData().subscribe(
        res => {
            this.options.series[0].data = res; // set series data to options object
        },
        err => {
            // error callback
        }
}

Upvotes: 1

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