title: angular 6 warning for using formControlName and ngModel
body: <p>I recently upgraded the angular version to 6-rc. I got following warning </p>
  
  <blockquote>
    <p>It looks like you're using ngModel on the same form field as
    formControlName. Support for using the ngModel input property and
    ngModelChange event with reactive form directives has been deprecated
    in Angular v6 and will be removed in Angular v7</p>
    
    <p>For more information on this, see our API docs here:
        <a href="https://angular.io/api/forms/FormControlName#use-with-ngmodel" rel="noreferrer">https://angular.io/api/forms/FormControlName#use-with-ngmodel</a></p>
  </blockquote>
  
  <p>What does it say exactly? the link does not have any fragment for <code>#use-with-ngmodel</code></p>
  
  <p>I guess I need to remove <code>ngModel</code> and use formGroup as my data binding object. </p>