Angular6 无法在EmbeddedView中正确访问上下文对象

在我的应用程序中，我正在创建一个嵌入式视图，并向其传递一个上下文

thumbnailTemplateRef:TemplateRef<ThumbnailContext>;
...

let thumbnailContext = new ThumbnailContext(divId, 
  buttonId,
  imgId,
  closeId,
  imageString,this.thumbnailContainerRef.length,null);
console.log("saving image context ",thumbnailContext);
thumbnailTemplateViewRef = this.thumbnailContainerRef.createEmbeddedView(this.thumbnailTemplateRef, thumbnailContext);

但我在执行过程中遇到以下错误

无法读取与html代码相对应的未定义的属性“divId”

这里我做错了什么？

指的是，如果我想访问

ThumbnailContext

对象中的

context

变量，我首先需要在

ThumbnailContext

对象中有一个

context

键，然后使用

let context=“context”

。因此，我将代码更改为以下内容

export class ImageContext {
  constructor(public divId:string,
              public buttonId:string,
              public imgId: string,
              public closeId:string,
              public imgSrc:string,
              public index:number,
              public viewRefId:EmbeddedViewRef<ThumbnailContext>){} //TODOM - not sure if the types are correct
}
export class ThumbnailContext{
  constructor(public context:ImageContext){}
}


  @ViewChild("thumbnailTemplate",{read:TemplateRef})
  thumbnailTemplateRef:TemplateRef<ThumbnailContext>;

    let thumbnailContext = new ThumbnailContext(new ImageContext(divId, 
      buttonId,
      imgId,
      closeId,
      imageString,this.thumbnailContainerRef.length,null));

    thumbnailTemplateViewRef = this.thumbnailContainerRef.createEmbeddedView(this.thumbnailTemplateRef, thumbnailContext); 

    <ng-template #thumbnailTemplate let-context="context"> <!-- thumbnailContext is the name of the variable passed to createEmbeddedView. Check .ts file-->

      <div id="{{context.divId}}"> 
        <button id="{{context.buttonId}}" type="button" data-toggle="modal" (click)="showEnlargeImage(context)"> 
          <img id="{{context.imgId}}" src="{{context.imgSrc}}"/> 
        </button>

导出类ImageContext{
构造函数（public divId:string，
公共按钮ID:string，
公共imgId:string，
public closeId:string，
公共imgSrc:string，
公开索引:编号:，
public viewRefId:EmbeddedViewRef）{}//TODOM-不确定类型是否正确
}
导出类ThumbnailContext{
构造函数（公共上下文：ImageContext）{}
}
@ViewChild（“thumbnailTemplate”，{read:TemplateRef}）
thumbnailTemplateRef:TemplateRef；
让thumbnailContext=新的thumbnailContext（新的ImageContext（divId，
buttonId，
伊姆吉德，
亲密的，
imageString，this.thumbnailContainerRef.length，null））；
thumbnailTemplateViewRef=this.thumbnailContainerRef.CreateMbeddedView（this.thumbnailTemplateRef，thumbnailContext）；

ThumbnailContext {divId: "thumbnail-1", buttonId: "thumbnail-button-1", imgId: "img-1", closeId: "close-button-1", imgSrc: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABVYA…7Jj8HyDnRt/ePaJ5eXn8Azv0jA3o5lvcAAAAASUVORK5CYII=", …}
buttonId: "thumbnail-button-1"
closeId: "close-button-1"
divId: "thumbnail-1"
imgId: "img-1"
imgSrc: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABVYA"
index: 0
viewRefId: null
__proto__: Object

export class ImageContext {
  constructor(public divId:string,
              public buttonId:string,
              public imgId: string,
              public closeId:string,
              public imgSrc:string,
              public index:number,
              public viewRefId:EmbeddedViewRef<ThumbnailContext>){} //TODOM - not sure if the types are correct
}
export class ThumbnailContext{
  constructor(public context:ImageContext){}
}


  @ViewChild("thumbnailTemplate",{read:TemplateRef})
  thumbnailTemplateRef:TemplateRef<ThumbnailContext>;

    let thumbnailContext = new ThumbnailContext(new ImageContext(divId, 
      buttonId,
      imgId,
      closeId,
      imageString,this.thumbnailContainerRef.length,null));

    thumbnailTemplateViewRef = this.thumbnailContainerRef.createEmbeddedView(this.thumbnailTemplateRef, thumbnailContext); 

    <ng-template #thumbnailTemplate let-context="context"> <!-- thumbnailContext is the name of the variable passed to createEmbeddedView. Check .ts file-->

      <div id="{{context.divId}}"> 
        <button id="{{context.buttonId}}" type="button" data-toggle="modal" (click)="showEnlargeImage(context)"> 
          <img id="{{context.imgId}}" src="{{context.imgSrc}}"/> 
        </button>