问题描述
当我将angular2 从rc4更新到rc5,之前的动态创建组件无法正常工作,原因可能是因为动态创建的组件中用到一个service,而这个service无法获得,但没有找到具体的解决办法,谁能帮忙看看,下面是代码I update angular2 to rc5,service can’t share when dynamic create SharedComponent,below is error:
NoComponentFactoryError {message: 'No component factory found for SharedComponent', stack: 'Error: No component factory found for FormComponen…tron/output/electron/build/polyfills.js:16347:22)'}component:SharedComponent(shareService)arguments:[Exception: TypeError: ’caller’ and ’arguments’ are restricted function properties and cannot be accessed in this context. at Function.remoteFunction (<anonymous>:3:14)]caller:[Exception: TypeError: ’caller’ and ’arguments’ are restricted function properties and cannot be accessed in this context. at Function.remoteFunction (<anonymous>:3:14)]length:1name:'SharedComponent'
below is my code----SharedComponent---
@Component({ template: require(’./share.component.html’), styles: [require(’./share.component.css’)]})export class SharedComponent implements OnInit { constructor(@Optional() private shareService:ShareService) { ...... }}
---shared.module.ts-------
@NgModule({ imports: [CommonModule, FormsModule], declarations: [SharedComponent], exports: [CommonModule, FormsModule, SharedComponent]})export class SharedModule { static forRoot(): ModuleWithProviders { return { ngModule: SharedModule }; }
---A.module.ts---------
@NgModule({ imports: [ sharedModule.forRoot() ], declarations: [ AComponent ], providers:[FormService]})export class AModule { }
-----A.component.ts------
@Component({ template: require(’./a.component.html’), styles: [require(’./a.component.css’)], providers: [ShareService]})export class UserComponent implements OnInit { @ViewChild(’body’, { read: ViewContainerRef }) bodyContainerRef: ViewContainerRef; constructor(private compiler: ComponentFactoryResolver,private shareService: ShareService) { } ngOnInit() { //Dynamic create SharedComponent let componentFactory = this.compiler.resolveComponentFactory(SharedComponent); this.bodyContainerRef.createComponent(componentFactory); }}
问题解答
回答1:A.module.ts
@NgModule({ imports: [ sharedModule.forRoot() ], declarations: [ AComponent ], entryComponents: [ SharedComponent ] providers:[FormService]})export class AModule { }