在父级Resolve完成之前,可以激活子路径上的警卫

时间:2018-03-22 11:57:23

标签: angular angular-router angular-route-guards angular-resolver

我正在尝试在导航到儿童路线之前解决数据,因为我必须在儿童看守中使用该数据。问题是父解析器,在儿童警卫被解雇后解析数据。解析器需要很长时间来解析数据

// app.module.ts
const appRoutes: Routes = [
  { path: 'login', component: LoginComponent },
  {
    path: '',
    component: SiteLayoutComponent,
    children: [
      { path: '', redirectTo: 'warehouse', pathMatch: 'full' },
      {
        path: 'warehouse',
        loadChildren: './warehouse/warehouse.module#WarehouseModule'
        // loadChildren: () => WarehouseModule
      }
    ],
    canActivate: [AuthGuard],
    resolve: {
      Site: SiteResolver // should be resolved before the guard is invoked.
    }
  },
  { path: '**', component: PageNotFoundComponent }
];

// warehouse.module.ts
const appRoutes: Routes = [

    { path: '', redirectTo: 'cash', pathMatch: 'full' },
    { path: 'cash', component: CashComponent, canActivate: [RouteGuard] // should be invoked after the parent resolver resloves th data }

];

这里,父子解析器即SiteResolver在子防护之后解析,即调用RouteGuard。我想要的是SiteResolver首先解析数据,然后RouteGuard应该触发,我该如何实现?

1 个答案:

答案 0 :(得分:3)

我不确定这是否是正确的方法。但是在经历了许多棘手的问题之后,我找到了解决方法。

使用canActivate而不是resolve来获取数据并将数据存储在服务中。下面是相同的代码段

@Injectable()
export class FetchUserData implements CanActivate {
  constructor(
    private userService: UserService,
    private httpClient: HttpClient
  ) {}
  public modalRef: BsModalRef;
  canActivate() {
    return this.httpClient
      .get("some/api/route")
      .map(e => {
        if (e) {
          this.userService.setUserDetails(e);
          return true;
        }
        return true;
      })
      .catch(() => {
        return Observable.of(false);
      });
  }
}

对我来说效果很好。刷新子路由将没有问题。