title: Angular 2 How to use pipes on input field in case of two way binding
body: <p>I know this is similar or duplicate to <a href="https://stackoverflow.com/a/39643180/2517223">this</a> ,  I  want to use pipe on ngmodel like this <code>[ngModel]="item.value | currency:'USD$'"</code> but i have a scenario where I need to bind a method like this <code>(ngModelChange)="someMethod()"</code> instead of setting the value <code>(ngModelChange)="item.value=$event"</code>. How to achieve both of them together.</p>
  
  <p>My Code: </p>
  
  <pre><code>&lt;input type="text" [(ngModel)]="item.value | currency:'USD$'"  (ngModelChange)="someMethod()" /&gt;
  </code></pre>