Angular form updateValueAndValidity of all children controls

Question

In my Angular 4 app, I have a form with several controls.

At some points I need to force the update of their validity, so I\'m doing:

this.form.get(\         


        

Answer 1

validateFormFields(fields) {
    try {
      Object.entries(fields.controls).forEach((control: any) => {
        if (typeof control[0] == 'Array' 
        ) {
          this.validateFormFields(control[1]);
        } else {
          if (control[1].controls) {
            Object.entries(control[1].controls).forEach((c: any) => {
              c[1].touched = true;
            });
          } else {
            control[1].touched = true;
          }

        }
      });
    } catch (e) {
      console.log(e);
    }
  }