angular 6 warning for using formControlName and ngModel
If you're looking for Angular 6 documentation right now then use https://next.angular.io
https://next.angular.io/api/forms/FormControlName#use-with-ngmodel
So you have 3 options:
use Reactive forms
use Template driven forms
silence warning (not recommended)
imports: [ ReactiveFormsModule.withConfig({warnOnNgModelWithFormControl: 'never'});]
Remove [(ngModel)] from every field within formGroup contains formControlName and set value in controller class as follows simply this.form.get('first').setValue('some value'); do not close or silence warnings explicitly
add
[ngModelOptions]="{standalone: true}" You can read more from angular website https://angular.io/api/forms/NgModel