Angular Ionic ion radio checked 예시 / *ngFor checked radio

<div *ngFor="let item of auth" class="flex">
  <label>{{item}}</label>
  <input
    formControlName="auth"
    class="accent-primary w-12 y-12 cursor-pointer"
    type="radio"
    [value]="item"
    [checked]="item === admin.auth"
  />
</div>

1. 첫 번째 방법

 

 

<div *ngFor="let role of roles" class="flex">
  <label>{{role}}</label>
  <input
    (click)="handleRole(role)"
    class="accent-primary w-12 y-12 cursor-pointer"
    type="radio"
    [checked]="role === adminForm.controls['role'].value"
  />
</div>

handleRole(role: string) {
    this.adminForm.controls['role'].setValue(role);
  }

2. 두 번째 방법