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onSameUrlNavigation
从 angular5.1 起提供 onSameUrlNavigation 来支持路由重新加载。、
有两个值 ’reload’ 和 ’ignore’。默认为 ’ignore’
定义当路由器收到一个导航到当前 URL 的请求时应该怎么做。默认情况下，路由器将会忽略这次导航。但这样会阻止类似于 “ 刷新 ” 按钮的特性。使用该选项可以配置导航到当前 URL 时的行为。
使用
配置 onSameUrlNavigation
@NgModule({
imports: [RouterModule.forRoot(
routes,
{onSameUrlNavigation: ‘reload’}
)],
exports: [RouterModule]
})
reload 实际上不会重新加载路由，只是重新出发挂载在路由器上的事件。
配置 runGuardsAndResolvers
runGuardsAndResolvers 有三个值：
paramsChange: 仅在路由参数更改时触发。如 /reports/:id 中 id 更改
paramsOrQueryParamsChange: 当路由参数更改或参训参数更改时触发。如 /reports/:id/list?page=23 中的 id 或 page 属性更改
always：始终触发
const routes: Routes = [
{
path: ”,
children: [
{path: ‘report-list’, component: ReportListComponent},
{path: ‘detail/:id’, component: ReportDetailComponent, runGuardsAndResolvers: ‘always’},
{path: ”, redirectTo: ‘report-list’, pathMatch: ‘full’}
]
}
];
组件监听 router.events
import {Component, OnDestroy, OnInit} from ‘@angular/core’;
import {Observable} from ‘rxjs’;
import {Report} from ‘@models/report’;
import {ReportService} from ‘@services/report.service’;
import {ActivatedRoute, NavigationEnd, Router} from ‘@angular/router’;
@Component({
selector: ‘app-report-detail’,
templateUrl: ‘./report-detail.component.html’,
styleUrls: [‘./report-detail.component.scss’]
})
export class ReportDetailComponent implements OnInit, OnDestroy {
report$: Observable<Report>;
navigationSubscription;
constructor(
private reportService: ReportService,
private router: Router,
private route: ActivatedRoute
) {
this.navigationSubscription = this.router.events.subscribe((event: any) => {
if (event instanceof NavigationEnd) {
this.initLoad(event);
}
});
}
ngOnInit() {
const id = +this.route.snapshot.paramMap.get(‘id’);
this.report$ = this.reportService.getReport(id);
}
ngOnDestroy(): void {
// 销毁 navigationSubscription，避免内存泄漏
if (this.navigationSubscription) {
this.navigationSubscription.unsubscribe();
}
}
initLoad(e) {
window.scrollTo(0, 0);
console.log(e);
}
}
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