Whereto with `disableDeprecatedForms(),provideForms()` in RC5? - forms

Question

Without deactivating the old forms with (in RC4 > it was a part of bootstrapping process)
disableDeprecatedForms(),
provideForms()
I cannot render data (got over observables) e.g. in a select boxes (options/*ngFor).
Where can I deactivate the old forms in RC5?
(OverviewComponent below has the form with select boxes)
That's the new main.ts:
import { platformBrowserDynamic } from '#angular/platform-browser-dynamic';
import { AppModule } from './app.module';
platformBrowserDynamic().bootstrapModule(AppModule);
That's the new app.module.ts
import { NgModule } from '#angular/core';
import { BrowserModule } from '#angular/platform-browser';
import { APP_BASE_HREF } from '#angular/common';
import { RouterModule } from '#angular/router';
import { HttpModule } from '#angular/http';
import { FormsModule } from '#angular/forms';
import { AppComponent } from './app.component';
import { routes } from './app.routes';
import {
OverviewComponent,
} from './forms/index';
#NgModule({
imports: [
BrowserModule,
HttpModule,
FormsModule,
RouterModule.forRoot(routes),
],
declarations: [
AppComponent,
OverviewComponent,
BasisdateneingabeComponent
],
providers: [{
provide: APP_BASE_HREF,
useValue: '<%= APP_BASE %>'
}],
bootstrap: [AppComponent]
})
export class AppModule { }

Answer 1

According to this, disableDeprecatedForms() still exists in RC5 but has been deprecated. Your problems are probably coming from the fact that your application is using the RC4 forms API. The best solution would be to update your forms to RC5 avoid further problems with new releases.
In lieu of that, you should be able to find a fix here (Bootstrapping has changed a little bit since that was written). There is a DeprecatedFormsModule that you can use. In your app.module, import it and add it to the imports array. Like so:
//...
import {DeprecatedFormsModule} from '#angular/common';
#NgModule({
//...
imports: [
//....
DeprecatedFormsModule
],
//...
})