angular2-forms - 如何同时在多个formControl上setValidators()？

Question

是否有任何替代方法可以最大限度地减少代码行。

 this.addRoeForm.controls.supplierName.setValidators(Validators.required);
 this.addRoeForm.controls.fromCurrency.setValidators(Validators.required);
 this.addRoeForm.controls.toCurrency.setValidators(Validators.required);
 this.addRoeForm.controls.roe.setValidators(Validators.required);

Answer 1

Object.keys(this.addRoeForm.controls).forEach(key => {
  this.addRoeForm.get(key).setValidators([Validators.required]);
});