angular - 如何在angular2中使用组件名称动态加载组件？

Question

我目前正在使用以下代码在我的应用程序中动态加载 Angular 组件。

export class WizardTabContentContainer {
  @ViewChild('target', { read: ViewContainerRef }) target: any;
  @Input() TabContent: any | string;
  cmpRef: ComponentRef<any>;
  private isViewInitialized: boolean = false;

  constructor(private componentFactoryResolver: ComponentFactoryResolver,   private compiler: Compiler) {
  }

  updateComponent() {
     if (!this.isViewInitialized) {
       return;
     }
     if (this.cmpRef) {
       this.cmpRef.destroy();
     }
     let factory = this.componentFactoryResolver.resolveComponentFactory(this.TabContent);

     this.cmpRef = this.target.createComponent(factory);
   }
}

这里 resolveComponentFactory 函数接受组件类型。我的问题是，有什么方法可以使用组件名称字符串加载组件，例如我将组件定义为

export class MyComponent{
}

如何使用组件名称字符串“MyComponent”而不是类型添加上述组件？

Answer 1

也许这会奏效

import { Type } from '@angular/core';

@Input() comp: string;
...
const factories = Array.from(this.resolver['_factories'].keys());
const factoryClass = <Type<any>>factories.find((x: any) => x.name === this.comp);
const factory = this.resolver.resolveComponentFactory(factoryClass);
const compRef = this.vcRef.createComponent(factory);

其中 this.comp 是您的组件的字符串名称，例如 "MyComponent"

Plunker Example

要做到这一点，请参阅缩小

• ng2 - dynamically creating a component based on a template