Angular 2 Routing Guard CanActivateChild 与延迟加载模块路由

Question

我有一个主路由，其中​​有子路由，这些子路由是延迟加载的模块，并且在每个延迟加载的模块中，我也为它们提供了单独的路由。我遇到的问题是当我保护主路由以防止加载它多次调用的子路由时

主要路由代码

export const PROVIDER_ROUTES: Route = {
    path: 'provider',
    component: ProviderComponent,
    canActivateChild:[AuthGuard],
    children: [
        { path: '', redirectTo: 'courses', pathMatch: 'full' },
        { path: 'courses', loadChildren: 'app/provider/course/course.module#CourseModule' },

    ],

};

延迟加载路由代码

const routes: Routes = [
  {
    path: '',
    component: CourseListComponent,
    resolve: { courses: CourseListResolver },
    children: [
      {
        path: ':id',
        component: CoursesEditComponent,
        resolve: { organizations: AddCourseResolver }
      },
      {
        path: ':id/edit',
        component: CoursesEditComponent,
        resolve: { course: CourseEditResolver }
      },
      {
        path: ':id/assign/:orgId',
        component: CourseAssignComponent,
        resolve: { subOrganizations: LicenseAssignResolver }
      },
      {
        path: ':id/update/:orgId',
        component: CourseAssignComponent,
        resolve: { license: LicenseEditResolver }
      }

    ]
  },
];

@NgModule({
  imports: [RouterModule.forChild(routes)],
  providers: [
    CourseListResolver,
    CourseEditResolver,
    LicenseAssignResolver,
    LicenseEditResolver,
    AddCourseResolver
  ],
  exports: [RouterModule],
})
export class CourseRoutingModule { }

export const RoutedComponents = [
  CourseListComponent,
  CoursesEditComponent,
  CourseAssignComponent
];

AuthGuard 代码是

export class AuthGuard implements CanActivateChild {

  constructor(private authService: AuthService, private router: Router, private commonService:CommonService) { }
  canActivateChild(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> {
    return this.authService.isUserLoggedIn().map((result: EditUser) => {
      console.log(result);
      if (result != null && result.organizations.length > 0) {
        this.commonService.isAuthenticated = true;
        return true;
      }
      this.commonService.isAuthenticated = false;
      this.router.navigate(["/provider"])
      return false;
    });

AuthGuard 函数为何被多次调用？

Answer 1

您有 2 级激活的路线，因此它将检查每个级别的守卫。如果你想让它调用一次，只需将守卫向下移动到子级即可。