Angular2 Currency Pipe change decimal separator

问题

Hello angular friends,

I'm working on an angular2 app (multiple actually). And I live in the Netherlands.

Currently I'm formatting my currency with the following:

{{someIntegerWithCentsToBeDivided / 100 | currency:'EUR':true:'1.0-2'}}

This displays something like 500 to be Eurosign 5 and 501 to be Eurosign 5.01.

Now we dutchies really like comma's the other way around so does anyone know how to change the . to a ,?

Bonus points if someone knows how to show 5,- optionally when there is no cents. My thoughts now would be to extend the CurrencyPipe

回答1:

Your problem has probably been solved some time ago, but just for reference for other Dutch developers (like myself):

Create a custom Pipe:

import {Pipe} from '@angular/core';

@Pipe({
    name: 'currencyFormat'
})
export class CurrencyFormat {
    transform(value: number,
        currencySign: string = '€ ',
        decimalLength: number = 2, 
        chunkDelimiter: string = '.', 
        decimalDelimiter:string = ',',
        chunkLength: number = 3): string {

        value /= 100;

        let result = '\\d(?=(\\d{' + chunkLength + '})+' + (decimalLength > 0 ? '\\D' : '$') + ')';
        let num = value.toFixed(Math.max(0, ~~decimalLength));

        return currencySign+(decimalDelimiter ? num.replace('.', decimalDelimiter) : num).replace(new RegExp(result, 'g'), '$&' + chunkDelimiter);
    }
}

Now you can use:

{{someIntegerWithCentsToBeDivided | currencyFormat}}

The Pipe has already all the Dutch defaults included, but you can easily change them or use them as arguments in the template. For example:

{{1234567 | currencyFormat:'$',2,' ','.',3}}

will give $12 345.67 as output.

回答2:

I'm too late but I found a solution.

I'm just create a pipe to replace anything:

import { PipeTransform, Injectable, Pipe }     from '@angular/core';
@Pipe({
  name: 'replace'
})
@Injectable()
export class ReplacePipe implements PipeTransform {
  constructor(){}
  transform(item: any, replace, replacement): any {
    if(item == null) return "";
    item = item.replace(replace, replacement);
    return item;
  }
}

I used that twice to solve your case.

{{ 5.01999 | currency:'BRL':true | replace:'.':',' | replace:',00':',-' }}}

来源：https://stackoverflow.com/questions/36858634/angular2-currency-pipe-change-decimal-separator

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format

angular

currency