如何从父路由的组件访问激活的子路由数据？

Question

const appRoutes: Routes = [
  { path: 'parent', component: parentComp, data: { foo: 'parent data' }, children: [
    { path: 'child1', component: childComp1, data: { bar: 'child data 1' },
    { path: 'child2', component: childComp2, data: { bar: 'child data 2' }
  ]}
];

如果我导航到/parent/child2然后查看ActivatedRoutefrom parentComp,data.foo则定义,但data.bar不是.我可以访问所有孩子的数组,但我不知道哪一个被激活.

如何从父路由的组件访问激活的子路由数据？

Answer 1

第一个孩子将为您提供数据访问权限

constructor(route: ActivatedRoute) {
  route.url.subscribe(() => {
    console.log(route.snapshot.firstChild.data);
   });
}

Answer 2

使用Angular 6,我设法从父组件获取当前路由数据,使用以下代码:

我已使用Extra选项配置路由器以继承父路由数据:

@NgModule({
  imports: [
    RouterModule.forRoot(routes, {
      initialNavigation: 'enabled',
      paramsInheritanceStrategy: 'always'
    }),
  ...
})
export class AppModule {}

然后在我的父组件中,我能够看到数据更改:

import { ActivatedRoute, ActivatedRouteSnapshot, NavigationEnd, Router } from '@angular/router';
import { Subscription } from 'rxjs';
import { filter, map } from 'rxjs/operators';

subs: Array<Subscription> = [];

constructor(private router: Router, private route: ActivatedRoute) {
  this.subs[0] = this.router.events
    .pipe(
      filter(event => event instanceof NavigationEnd),
      map(() => this.route.snapshot),
      map(route => {
        while (route.firstChild) {
          route = route.firstChild;
        }
        return route;
      })
    )
    .subscribe((route: ActivatedRouteSnapshot) => {
      console.log(route.data);
    });
}

ngOnDestroy() {
  this.subs.forEach(s => s.unsubscribe());
}

请享用!

Answer 3

在 Angular 8 中使用：

data: any;

constructor(route: ActivatedRoute) {
  this.data = route.snapshot.firstChild.data;
}