我正在尝试将我的动态组件加载程序从RC4更新到RC5,因为不推荐使用ComponentResolver . 我已将加载程序更新为以下内容
@Component({
selector: 'component-dispatcher',
template: `<div #container></div>` // Define the template here because of its brevity
})
export class ComponentDispatcherComponent implements OnInit, OnDestroy {
@Input() component:any; // Some dynamic component to render
@Input() options:any; // Component configuration, optional
@Input() data:any; // Data to render within the component
// Inject the dynamic component onto the DOM
@ViewChild("container", {read: ViewContainerRef}) container:ViewContainerRef;
private componentReference:ComponentRef<any>;
constructor(private resolver:ComponentFactoryResolver) {
}
ngOnInit() {
// Create our component now we're initialised
let componentFactory = this.resolver.resolveComponentFactory(this.component);
this.componentReference = this.container.createComponent(componentFactory);
this.componentReference.instance.data = this.data;
this.componentReference.instance.options = this.options;
}
ngOnDestroy() {
// If we have a component, make sure we destroy it when we lose our owner
if (this.componentReference) {
this.componentReference.destroy();
}
}
}
并尝试将以下组件动态加载到DOM中
@Component({
selector: 'text-cell',
pipes: [IterableObjectPipe],
templateUrl: './text-cell.component.html',
styles: ['.fieldName { font-weight: bold; }']
})
export class TextCellComponent implements OnInit {
// Data to render within the component
@Input() data: any;
@Input() record: any;
// Configuration of what data to display
@Input() options: {
excludeFieldNames: boolean,
translation: string
};
constructor() {
}
ngOnInit() {
setTimeout(() => {
//console.log('***************************** ngOnInit...textCell ***********************');
this.options.translation = '' + (_.get(this.options, 'translation') || 'fields');
});
}
}
然而,当我使用我的TextCellComponent或应用程序中的任何其他组件执行此操作时,我收到以下错误
ORIGINAL EXCEPTION: No component factory found for TextCellComponent
ORIGINAL STACKTRACE:
Error: No component factory found for TextCellComponent
at NoComponentFactoryError.BaseException [as constructor]
(webpack:///./~/@angular/core/src/facade/exceptions.js?:27:23)
at new NoComponentFactoryError
我已经完成了步骤
https://angular.io/docs/ts/latest/cookbook/rc4-to-rc5.html
但我似乎错过了一些东西 . 我已经尝试将组件添加到bootstrapping并在全局定义它们而没有运气 . 任何的意见都将会有帮助 .
EDIT
添加模块定义
@NgModule({
imports: [
BrowserModule,
HttpModule,
FormsModule,
ReactiveFormsModule,
...MATERIAL_MODULES
],
declarations: [
...APPLICATION_PIPES,
...APPLICATION_COMPONENTS,
...APPLICATION_DIRECTIVES,
CygnusComponent,
// Component declarations
// TODO: refactor to appropriate modules
...
ComponentDispatcherComponent,
TextCellComponent,
...
],
bootstrap: [
ApplicationComponent
],
providers: [
...APPLICATION_PROVIDERS,
AppStore
]
})
export class ApplicationComponent {}
3 回答
需要在模块的
entryComponents
部分声明要加载的所有组件"dynamically" . 换句话说,你应该得到类似的东西:请注意,您需要在
declarations
和entryComponents
部分列出TextCellComponent
.您可能想要检查导入路径 . 在我的例子中,一个文件导入使用大写,而另一个使用小写 .
赠品是在Chrome网络标签中,我注意到该文件被加载两次(每次拼写一次) .
即使您已在EntryComponents和Declarations中提供了Component,有时您也会遇到此问题 .
在这些情况下,您只需输入此组件名称(此处为
TextCellComponent
),如下所示:这也应该在entryComponents中完成 .
希望有所帮助 .