数据在组件中未定义,但在另一个组件中存在吗?

时间:2019-01-23 10:53:41

标签: javascript angular

我很困惑,因为我能够从html文件中调用组件中的公共变量  -时间线过滤器组件

但是,当我尝试从另一个组件(engagement-filter.component)调用它时,它以未定义的形式返回!

有效的HTML:

time-line-filters.html:

  #productFilter
  [label]="'Filter on Engagement Types' | translate"
  [searchPlaceholder]="'Search...' | translate"
  [items]="timelineHelper.products"  THIS IS WHAT IM LOOKING AT.
  (filterUpdate)="filter($event)">
</tl-checkbox-group>

javascript(time-line-filters.html):

import { EngagementTimeline } from './../../../utils/engagement-

export class TimelineFilterComponent implements OnInit {

@Input() timelineHelper: EngagementTimeline;
}

用于输入的EngagementTimeline类:

export class EngagementTimeline {
    public products: EngagementProduct[] = []; BEING CALLED
    }

上面的方法有效,现在当我尝试对我的engagement-filter.html执行相同操作时,我无法读取未定义的产品。

    <tl-checkbox-group *ngIf="this.engagementService.potentialEngagements"
#productFilter
[label]="'Engagement Types' | translate"
[searchPlaceholder]="'Search...' | translate"
[items]="timelineHelper.products"  ---> Exactly the same here 
[fullscreen]="false"
(filterUpdate)="updateIndividuals($event)">

JS(engagement-filter.component

import { EngagementTimeline } from './../../../utils/engagement-timeline';
export class EngagementFilterComponent implements OnInit {
  @Input() timelineHelper: EngagementTimeline;
}

我缺少明显的东西吗?

任何帮助将不胜感激,谢谢!

0 个答案:

没有答案