Angular 2 RC.5 Can't bind to 'formGroup' since it isn't a known property of 'form' [duplicate] - forms

Question

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binding angular object to model-driven form in angular2
(1 answer)
Closed 6 years ago.
I have an error
Can't bind to 'formGroup' since it isn't a known property of 'form'
after update project to angular2 RC.5
app.module.ts:
#NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
DeprecatedFormsModule,
HttpModule,
TranslateModule.forRoot({
provide: TranslateLoader,
useFactory: (http: Http) => new TranslateStaticLoader(http, '/assets/i18n', '.json'),
deps: [Http]
}),
ConfigurationDevicesModule,
ConfigurationEditModule,
ControlModule,
ResourceEditModule,
UniWebControlInfoModule,
routing
],
bootstrap: [ AppComponent ]
})
export class AppModule {
}
myComponent.module.ts
#NgModule({
declarations: [
ConfigurationDevicesComponent
],
imports: [
BrowserModule,
TranslateModule
],
exports: [
ConfigurationDevicesComponent
]
})
export class ConfigurationDevicesModule {
}
template html example:
<form [formGroup]="selectBackground">
<div *ngIf="backgrounds" class="form-group">
<h5>{{ 'CONFIGURATION_DEVICES.ALL_BACKGROUNDS' | translate }}</h5>
<select formControlName="selectBackgroundId">
<option *ngFor="let background of backgrounds" [value]="background.id">{{ 'CONFIGURATION_DEVICES.ID' | translate }} {{ background.id }} {{ 'CONFIGURATION_DEVICES.NAME' | translate }} {{ background.name }}</option>
</select>
</div>
</form>
In angular 2 RC4, formGroup worked fine.
I tried to import both DeprecatedFormsModule and DFormsModule , the problem is the same . In official documentation Angular now I can not find any mention about formGroup or again changed the way of building forms?

Answer 1

update
ReactiveFormsModule needs to be added to imports
#NgModule({
imports: [BrowserModule, FormsModule, ReactiveFormsModule], // <<<===
...
})
original
Use ReactiveFormsModule instead of DeprecatedFormsModule.
To be able to use ngModel with formControlName you need to import FormsModule and ReactiveFormsModule

Answer 2

You need to import REACTIVE_FORM_DIRECTIVES from #angular/forms to your component and add it as directive (directives: [REACTIVE_FORM_DIRECTIVES])
You need to import FormsModule from #angular/forms to your NgModule.