[英]Communicating data between two unrelated components
我有一個顯示在無序列表中的商店列表,當初始化此列表時, ngOnInit()
function 返回所有商店的數據。 單擊每個列表元素時,我想將商店數據發送到商店詳細信息組件,以便它可以計算出要顯示的適當數據。 由於這兩個組件不遵循父/子關系,我該怎么做? 我是最新版本的 Angular 的新手,所以我不確定,也許是發射器或 Rxjs 是 go 的方式?
我的模板:
<li class="nav-item">
<div class="dropdown {{showMenu ? 'show' : ''}}">
<button (click)='toggleMenu()' class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenu2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="">
Stores
</button>
<div class="dropdown-menu {{showMenu ? 'show' : ''}}" aria-labelledby="dropdownMenu2">
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/1']">Store 1</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/2']">Store 2</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/3']">Store 3</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/4']">Store 4</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/5']">Store 5</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/6']">Store 6</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/7']">Store 7</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/8']">Store 8</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/9']">Store 9</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/10']">Store 10</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/11']">Store 11</button>
<button (click)="clickStore()" class="dropdown-item" type="button" [routerLink]="['/store/12']">Store 12</button>
</div>
</div>
</li>
我的商店列表組件:
ngOnInit() {
this.storeService.getStores().subscribe({
next: stores => {
this.stores = stores;
},
error: err => this.errorMessage = err
});
}
clickStore(): void {
console.log(this.stores);
// send "this.stores" to store detail component
}
我的商店詳細信息組件:
export class StoreDetailComponent implements OnInit {
retrieveStoreData(): void {
// get data from store list component and assign to this.stores
}
displayStore(): void {
let id = +this.route.snapshot.paramMap.get('id');
for(let i=0;i<this.stores.length; i++){
if(this.stores[i].storeId == id){
this.store = this.stores[i];
}
}
}
}
在商店詳細信息模板中,我只想顯示商店數據:
ID: {{store.storeId}}
Name: {{store.storeName}}
Description: {{store.storeDescription}}
您應該使用服務來檢索數據並將其存儲在本地屬性中。 這樣,您可以通過將服務注入組件來訪問它。 state 管理解決方案可以工作,是的,但是對於這樣一個簡單的用例,一個簡單的可注入服務就可以解決問題。
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