如何将 DomSanitizer 作为打字稿中的参数传递给管道？

Question

我正在使用管道显示 feathericons，它具有以下代码：

import {DomSanitizer} from '@angular/platform-browser';
import {Pipe, PipeTransform} from '@angular/core';

import { icons } from 'feather-icons'; // v4+

@Pipe({ name: 'feather' })
export class FeatherIconsPipe implements PipeTransform {

  constructor(private sanitizer: DomSanitizer) {}

  transform(icon: string, size: number = 18, color: string = 'inherit', float: string = 'inline-end') {
    return this.sanitizer.bypassSecurityTrustHtml(icons[icon].toSvg({
      width: size,
      height: size,
      color: color,
      float: float
    }));
  }
}

如您所见，它使用了 DomSanitizer。我像这样在 HTML 中使用管道 :

 <span [innerHTML]="'home' | feather"></span>

它工作正常。但现在我需要通过打字稿做同样的事情。我试过了：

const span = this._renderer2.createElement('span');
let name = new FeatherIconsPipe().transform('home');
this._renderer2.setProperty(span, 'innerHTML', name);

但它抛出错误：

Expected 1 arguments, but got 0.ts(2554) feather-pipe.ts(9, 15): An argument for 'sanitizer' was not provided.

然后我试了

private sanitizer : DomSanitizer = this.sanitizer;
...
let name = new FeatherIconsPipe(this.sanitizer).transform('home');

但是管道输出：

Cannot read property 'bypassSecurityTrustHtml' of undefined.

如何使用 typescript 设置内部 HTML 和管道？

Answer 1

需要将 sanitizer 注入组件中的构造函数

  constructor(private _renderer2: Renderer2, private sanitizer: DomSanitizer){

     new FeatherIconsPipe(this.sanitizer).transform('home');

Demo

如何将 DomSanitizer 作为打字稿中的参数传递给管道？

How to pass DomSanitizer as an argument in typescript to a pipe?

angular-pipe

angular

angular-dom-sanitizer