typescript – Angular2中的动态模板“transclusion”

ComponentFactory.ts

export interface ComponentFactoryInterface {

    static CreateComponent(obj: CommonSuperObject)

}

@Injectable()
export class ComponentFactory {

    public static CreateComponent(obj: CommonSuperObject){

        if (obj instanceof ObjectTypeA){
            return ObjectComponentA()
        }else if (obj instanceof ObjectTypeB){
            return ObjectComponentB()
        }

    }
}

在模板中,我想做这样的事情：

main_template.html

<components>
  <component *ngFor="#obj in objects">
     <!-- insert custom component template here -->
  </component>
</components>

如何动态插入关联的组件？

我可以做这样的事情(不是我喜欢的做法)：

<components>
  <!-- loop over component models -->
  <custom-component-a *ngIf="models[i] instanceof ObjectTypeA">
  </custom-component-a>
  <custom-component-b *ngIf="models[i] instanceof ObjectTypeB">
  </custom-component-b>
</components>

但在许多层面上,这对我来说似乎是非常错误的(如果我添加另一个组件类型,我将不得不修改此代码和工厂代码).

?编辑 – 工作示例

constructor(private _contentService: ContentService,private _dcl: DynamicComponentLoader,componentFactory: ComponentFactory,elementRef: ElementRef){

    this.someArray = _contentService.someArrayData;
    this.someArray.forEach(compData => {
    let component = componentFactory.createComponent(compData);
        _dcl.loadIntoLocation(component,elementRef,'componentContainer').then(function(el){
            el.instance.compData = compData;
        });
    });

}