我最近更新到了角v9,并且按照变更日志中的定义,不推荐使用角特性或由指令或组件扩展的未修饰基类。
因此,我的应用程序中有许多混频器,如下所示:
破坏:
export const Destroy = <T extends Constructor>(base: T = class {} as T) =>
class extends base implements OnDestroy {
destroy$ = new Subject<boolean>();
ngOnDestroy(): void {
this.destroy$.next(true);
this.destroy$.complete();
}
};卷轴:
export const Scroll = <T extends Constructor>(base: T = class {
} as T) =>
class extends base {
public scrollToFirstError(form: FormGroup, scrollSelector?: string) {
form.markAllAsTouched();
const target = jQuery('.ng-invalid:not("form")').first();
const scrollContainer = jQuery(scrollSelector || 'html,body');
const subHeaderHeight = scrollSelector ? 0 : Number.parseInt(getComputedStyle(document.documentElement)
.getPropertyValue('--height').trim(), 10);
scrollContainer.animate(
{ scrollTop: jQuery(target).offset().top - jQuery(scrollContainer).offset().top - subHeaderHeight - 50 }, 'slow');
target.focus();
}
};在我的组件中扩展它,
export class ComponentA extends Destroy(Scroll)尝试访问这些混合器的属性会引发以下错误:
this.apiService.getData().pipe(takeUntil(this.destroy$)... // Property 'destroy$' does not exist on type 'ComponentA'.
this.scrollToFirstError(this.form, '.modal'); // Property 'scrollToFirstError' does not exist on type 'ComponentA'.有人能帮我解决这个问题吗?提前感谢!
* Update *
在我的部分:
export const MixinedClasses: any = Destroy(Scroll());
@Component({
selector: 'app-loan-list',
templateUrl: './loan-list.component.html',
styleUrls: ['./loan-list.component.scss']
})
export class Component extends MixinedClasses {}发布于 2020-05-29 17:45:51
只需将Destroy和Scroll转换为@component修饰组件,它就会正常工作。
添加:
// Destroy const becomes a decorated class
@Component({
selector: 'app-destroy'
})
export class Destroy implements OnDestroy{}
// Scroll const becomes a decorated class
@Component({
selector: 'app-scroll'
})
export class Scroll{}这只是一个想法,您必须使它适合您的特定实现。
老实说,我不太遵循您将base作为参数进行扩展的方式,因此您可能需要重新考虑使用标准类的整个方法。
https://stackoverflow.com/questions/60257100
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