Form Name not changing in template drive form angular 4

Question

After array splice *ngFor not updating form input name.

 <div class="row p-t-20" *ngFor="let multiple_option of questions.options; let i=index">
<div class="col-md-10">
  <div class="form-group">
    <label class="control-label">Option {{i + 1}}</label>

    <input type="text" [(ngModel)]="multiple_option.value"  class="form-control" name="radioBtn_{{i}}" #radioBtn="ngModel" required >

  </div>
</div>

<div class="col-md-1">
  <button type="button" class="btn btn-success btn-circle" (click)="addOption()"><i class="fa fa-plus"></i> </button>
</div>

<div class="col-md-1" [hidden]="i == 0">
  <button type="button" class="btn btn-warning btn-circle" (click)="removeOption(i)"><i class="fa fa-minus"></i> </button>
</div>

{{f.value | json}}

{ "question0": "scascsac", "selectElem0": "radio_button", "is_other0": false, "radioBtn_0": "ascsacsac", "radioBtn_2": "asccscascssaccsacsscsca", "radioBtn_3": "ascsacsacsacsacsac" }

addOption(){

this.f._submitted = false;
this.questions.options.push({logic : {}});

}

removeOption(index){

this.questions.options.splice(index,1);

console.log(this.questions.options);

}

I have replicated above scenario in below link:

https://stackblitz.com/edit/angular-kzyfky?file=app%2Fapp.component.html

Answer 1

Remove name and add [ngModelOptions]="{standalone: true}"