从根组件获取子路由参数(app.component)

Question

天哪：

如何从app.component（根组件）获取子路由参数，在我的应用程序中，子路由可能是“/teaching/grade/1213”或“/part/sim/te/1232”；如何从 app.component?

获取参数

    ngOnInit() {

    this.router.events.subscribe(data => {
        // Only handle final active route
        if (data instanceof NavigationEnd) {
            // parsedUrl conatins params, queryParams 
            // and fragments for the active route
            let parsedUrl = this.router.parseUrl(data.url).root.children;

            console.log(parsedUrl.primary.segments);
        }
    });

}

在上面的代码中，有两个问题： first：当 then 端组件处于活动状态时，则触发 then 订阅；第二："this.router.parseUrl(data.url)" 将参数解析为路由点；

请救救我！

Answer 1

试试这个

constructor(private router: Router, private route: ActivatedRoute) { }

ngOnInit() {
    this.route.snapshot.params['id']

    // or

    this.route.params.subscribe(params => {
        console.log(params['id']);
    });
}

2017/6/13更新：

在服务中使用共享数据

app-state.service.ts

@Injectable()
export class AppState {
  params = new BehaviorSubject(undefined);

  setParams(val: any) {
    this.params.next(val);
  }
}

child.component.ts

constructor(private route: ActivatedRoute, private appState: AppState) { }

ngOnInit() {
  this.route.params.subscribe(params => {
    this.appState.setParams(params['id']);
  });
}

app.component.ts

ngOnInit() {
  this.appState.params.subscribe(val => {
    console.log(val);
  });
}

尝试ngrx/Store

从根组件获取子路由参数(app.component)

get child route parameters from root component(app.component)

router

angular