Angular2 use basic pipe in custom pipe

user_534386 0
Viewed 12315

I'd like to add some additional functionality to the basic angular2 pipes.

ie. some extra formatting done on the currency pipe. To do that I'd like to use the existing pipe in the component code of my custom pipe.

Is there any way this can be done?

@Pipe({name: 'formatCurrency'})
export class FormatCurrency implements PipeTransform {
  transform(value:number, args:string[]) : any {
    var formatted = value/100;

    //I would like to use the basic currecy pipe here.
    ///100 | currency:'EUR':true:'.2'

    return 'Do some extra things here ' + formatted;
  }
}
angular-pipe angular
3 Answers

You can use Angular pipes in your custom pipe.

First, in your pipe file, you must import desired pipe eg.

import { SlicePipe } from '@angular/common';

And then use it in your custom pipe: 

  transform(list: any, end: number, active: boolean = true): any {
return active ? new SlicePipe().transform(list, 0, end) : list;

}

Tested on A6.

user_22842380
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