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;
}
}
You can extend CurrencyPipe, something like this:
export class FormatCurrency extends CurrencyPipe implements PipeTransform {
transform(value: any, args: any[]): string {
let formatedByCurrencyPipe = super.transform(value, args);
let formatedByMe;
// do your thing...
return formatedByMe;
}
}
If you look at the source, that's similar to how angular pipes work...
(Added by question author)
Don't forget to import the CurrencyPipe Class
import {CurrencyPipe} from 'angular2/common';
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