组件中的动态模板 Angular 6

Dynamic Template in Component Angular 6

我是 Angular 的新手,如果我搞砸了行话,我深表歉意。 我正在尝试在我的组件中动态使用 templateURL (html),Class 函数将保持不变,但 html 将根据 binType

发生变化

这是我的组件class来源

import { Component, OnInit, Input, Output, EventEmitter, AfterViewInit, ViewContainerRef, ViewChild, Compiler, Injector, NgModule, NgModuleRef } from '@angular/core';

declare var module: {
  id: string;
}

@Component({
  selector: 'app-cart-bin',
  styleUrls: ['./cart-bin.component.css'],  
  template: ` 
      <ng-template #dynamicTemplate></ng-template>
    `

})

export class CartBinComponent implements AfterViewInit, OnInit {

  @ViewChild('dynamicTemplate', {read: ViewContainerRef}) dynamicTemplate;


  public cols = 3;
  public rows = 3;

  @Input() binType = "";

  @Input() toteList = [];

  @Output() callbackMethod = new EventEmitter<string>();

  constructor(private _compiler: Compiler, private _injector: Injector, private _m: NgModuleRef<any>) { }

  ngOnInit() {
    console.log(this.binType);
  }

  ngAfterViewInit() {

    let tmpObj;

    console.log(tmpObj);

    if ((this.binType) == "2") {
      tmpObj = {
        moduleId: module.id,
        templateUrl : './cart-bin.component_02.html'
      };
    } else {
      tmpObj = {
        moduleId: module.id,
        templateUrl : './cart-bin.component_01.html'
      };
    }

    console.log(tmpObj);

    const tmpCmp = Component(tmpObj)(class {});

    const tmpModule = NgModule({declarations: [tmpCmp]})(class {});

    this._compiler.compileModuleAndAllComponentsAsync(tmpModule).then((factories) => {
      const f = factories.componentFactories[0];
      const cmpRef = f.create(this._injector, [], null, this._m);
      cmpRef.instance.name = 'dynamic';
      this.dynamicTemplate.insert(cmpRef.hostView);
    });
}

  getToteBoxClass(toteData){
    ...
  } 

  getToteIcon(toteData){
    ...
  }

  toteSaveClick(toteData){
    ...
  }
}

正在编译,但模板未解析并出现以下错误

ERROR Error: Template parse errors:
Can't bind to 'ngStyle' since it isn't a known property of 'div'.

Html 是正确的 我直接将它用作@Component TypeDecorator

的一部分

除了在 angular 中使用编译器和创建动态组件是相当反模式的事实之外,我相信您可以通过将 CommonModule 添加到您的 NgModule 声明来修复您的错误:

NgModule({imports: [CommonModule], declarations: [tmpCmp]})

更好的方法是在模板中使用 ngSwitchCase,创建两个继承自基本组件但具有不同模板的组件,并根据 binType 让它呈现一个或另一个其他组件:

模板:

<ng-container [ngSwitch]="binType">
  <cart-bin-1 *ngSwitchCase="1"></cart-bin-1>
  <cart-bin-2 *ngSwitchCase="2"></cart-bin-2>
</ng-container>

ts:

export abstract class CartBin {
  // some common cart bin logic here:
}


@Component({
  selector: 'cart-bin-1',
  templateUrl: './cart-bin.component_01.html' 
})
export class CartBin1 extends CartBin {

}

@Component({
  selector: 'cart-bin-2',
  templateUrl: './cart-bin.component_02.html' 
})
export class CartBin2 extends CartBin  {

}

使用它的好处是 AOT 包将不再包含编译器,因此使您的应用程序更小更快。此外,这看起来好多了:)