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我有這個PipeGalleryFilter.ts
:angular2 - 管錯誤
import { Pipe,Injectable,PipeTransform } from '@angular/core';
@Pipe({
name: 'galleryfilter',
pure: false
})
@Injectable()
export class PipeGalleryFilter implements PipeTransform {
transform(items: any[], args: any[]): any {
return items.filter(item => item.type.indexOf(args[0].type) !== -1);
}
}///@@
然後我把它添加到我的Gallery
:
HTML
<masonry-brick class="brick50" *ngFor="let brick of bricks | galleryfilter: gallery_args">
<img src="{{brick.img}}" alt="">
</masonry-brick>
TS
gallery_args = {type: 'magazine'};
bricks = [
{title: 'Brick 1',img:"assets/img/img003.jpg",type: "magazine"},
{title: 'Brick 2',img:"assets/img/img004.jpg",type: "magazine"},
{title: 'Brick 3',img:"assets/img/img005.jpg",type: "newspaper"},
{title: 'Brick 4',img:"assets/img/img003.jpg",type: "newspaper"},
{title: 'Brick 5',img:"assets/img/img004.jpg",type: "newspaper"},
{title: 'Brick 6',img:"assets/img/img005.jpg",type: "newspaper"},
{title: 'Brick 1',img:"assets/img/img003.jpg",type: "movies"},
{title: 'Brick 2',img:"assets/img/img004.jpg",type: "commercials"},
{title: 'Brick 3',img:"assets/img/img005.jpg",type: "commercials"},
{title: 'Brick 4',img:"assets/img/img003.jpg",type: "commercials"},
{title: 'Brick 5',img:"assets/img/img004.jpg",type: "lifestyle"},
{title: 'Brick 6',img:"assets/img/img005.jpg",type: "lifestyle"}
];
但我不斷收到:
例外:錯誤./Gallery類畫廊 - 聯模板:22:39 造成的:無法讀取未定義
我的財產 '類型'有人懷疑它與return items.filter(item => item.type.indexOf(args[0].type) !== -1);
行有關係,但我不知道如何做到正確。
我該如何解決這個問題?