<h2>Mój koszyk</h2>
<div [formGroup]="cartForm">
   <div
      formArrayName="products"
      *ngFor="let product of cartForm.controls.products.controls; let i=index">
         <label>{{cart[i].name}}</label>
         <input type="number" [formControlName]="i" />
   </div>
</div>
