<form #f="ngForm" (ngSubmit)="nextQuestion(f)" novalidate>
  <div class="alert alert-grey question">
    {{question.question}} ({{question.points}}pkt.)
    <div class="answers">
      <div *ngFor="let item of question.answers">
        <span *ngIf="!item.is_gap">{{item.content}}</span>
        <input *ngIf="item.is_gap" class="form-control" type="text" [name]="item.id" ngModel />
      </div>
    </div>
  </div>

  <button class="btn btn-study-cave" type="submit"><i class="fas fa-arrow-right"></i> Dalej</button>
</form>