我正在尝试在基于Angular 7的应用程序中实现面包屑。
下面提到了包含面包屑组件的根组件的HTML模板(面包屑在路由器出口外部)
<app-layout>
<div>
<app-breadcrumb></app-breadcrumb>
<router-outlet></router-outlet>
</div>
</app-layout>
面包屑ts文件
ngOnInit() {
this.router.events.pipe(filter(event => event instanceof NavigationEnd)).subscribe((router) => {
let snapshot = this.router.routerState.snapshot;
this.breadcrumbs = [];
let url = snapshot.url;
let routeData: Data = snapshot.root.data;
let label = routeData['breadcrumb'];
let params = snapshot.root.params;
this.breadcrumbs.push({
url: url,
label: label,
params: params
});
});
面包屑组件html文件
<nav aria-label='breadcrumb'>
<ol class='breadcrumb'>
<li *ngFor='let breadcrumb of breadcrumbs'>
<a [routerLink]='[breadcrumb.url, breadcrumb.params]' routerLinkActive='active'>{{ breadcrumb.label }}</a>
</li>
</ol>
</nav>
路由定义如下
const routes: Routes = [
{ path: 'folders', component: FolderManagementComponent, data: { breadcrumb: 'Home' } },
{ path: 'folders/list-documents', component: ListDocumentsComponent, data: { breadcrumb: 'Documents' } },
{ path: '', redirectTo: '/folders', pathMatch: 'full', data: { breadcrumb: 'Home' }}
];
但是我没有得到数据和参数
答案 0 :(得分:1)
使用以下代码更新面包屑组件ts文件中的路由器订阅逻辑。
ngOnInit() {
this.router.events
.pipe(filter(event => event instanceof NavigationEnd))
.pipe(map(() => this.activatedRoute))
.pipe(map((route) => {
while (route.firstChild) { route = route.firstChild; }
return route;
}))
.pipe(filter(route => route.outlet === PRIMARY_OUTLET))
.subscribe(route => {
let snapshot = this.router.routerState.snapshot;
this.breadcrumbs = [];
let url = snapshot.url;
let routeData = route.snapshot.data;
console.log(routeData);
let label = routeData['breadcrumb'];
let params = snapshot.root.params;
this.breadcrumbs.push({
url: url,
label: label,
params: params
});
});
}
正在运行的stackblitz链接:https://stackblitz.com/edit/breadcrumb-in-angular-7
最近,我已经实现了ng7-dynamic-breadcrumb,ng7-bootstrap-breadcrumb和ng7-mat-breadcrumb Angular面包屑模块。请检查这些模块,希望对动态面包屑有所帮助。