Controls

[damienvalade]

Du coup j'ai trouvé cette solution :

      <input
        type="button"
        (click)="onClickAdd()"
        class="form-control"
        value="new input"
      >
      <ul class="list-group">
        <li *ngFor="let mat of form.get('mat')['controls'], index as i" class="list-group-item">
          <input
            type="text"
            name="mat"
            id="mat"
            [formControl]="form.get('mat')['controls'][i]"
          >
        </li>
      </ul>

réf : Reactive form