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我有一个视图,在这种视图中3个按钮:如何在枚举中使用ng-if条件? (angular2 /打字稿)
showListOne()
showListTwo()
showListThree()
被点击时各该按钮i的要呈现不同的列表中,在相同的视图,但不能在同一时间(一次只能显示一个列表,如标签行为)。
所以我想用枚举做,这是多么:
出口枚举CurrentListView {人,车,地方}
@Component({
selector: 'my-app',
styles: [require('./my-app.css')],
directives: [DND_DIRECTIVES],
providers: [DND_PROVIDERS],
template: require('./my-app.component.html')
})
@Injectable()
export class AppCmp implements OnInit {
listOfPeople: Person[];
listOfCars: Car[];
listOfPlaces: Place[];
currentListView: CurrentListView;
constructor(private _MyService: MyService) {
};
public showListOfPeopleData(): void {
this.currentListView = CurrentListView.People;
}
public showListOfCarsData(): void {
this.currentListView = CurrentListView.Cars;
}
public showListOfPlacesData(): void {
this.currentListView = CurrentListView.Places;
}
ngOnInit() {
this._MyService.getListOfPeopleData().subscribe(res => {
this.listOfPeople = res;
});
this._MyService.getListOfCarsData().subscribe(res => {
this.listOfCars = res;
});
this._MyService.getListOfPlacesData().subscribe(res => {
this.listOfPlaces = res;
});
}
}
现在,我如何使用NG-如果要问什么是currentListView
的状态?这是我的视图(NG-如果有什么我想它dosent工作):
<div *ngIf="currentListView == CurrentListView.People">
<div dnd-sortable-container [dropZones]="['zone-one']" [sortableData]="listOfPeople">
<div class="list-bg" *ngFor="#person of listOfPeople; #i = index" dnd-sortable [sortableIndex]="i">
ID: {{person.id}} <p></p> Age: {{person.age}}
</div>
</div>
</div>
<div *ngIf="currentListView == CurrentListView.Cars">
<div dnd-sortable-container [dropZones]="['zone-one']" [sortableData]="listOfCars">
<div class="list-bg" *ngFor="#car of listOfCars; #i = index" dnd-sortable [sortableIndex]="i">
ID: {{car.id}} <p></p> Color: {{car.color}}
</div>
</div>
</div>
<div *ngIf="currentListView == CurrentListView.Places">
<div dnd-sortable-container [dropZones]="['zone-one']" [sortableData]="listOfPlaces">
<div class="list-bg" *ngFor="#place of listOfPlaces; #i = index" dnd-sortable [sortableIndex]="i">
City: {{place.city}} <p></p> Capacity: {{place.capacity}}
</div>
</div>
</div>
而且可以在我的打字稿或HTML可能会更有效率?我很想看到一个更通用的方式来做这个没有重复的建议..
谢谢分配!
我建议做不同的。将每个视图放入一个组件中,然后为每个组件设置路由。您的按钮变成加载相应组件的路由器链接。 –