[CST4981] finished task, working on unit testing

src/app/admin/admin-sidebar/admin-sidebar.component.ts

@@ -21,6 +21,7 @@ import { MenuService } from '../../shared/menu/menu.service';
 import { CSSVariableService } from '../../shared/sass-helper/sass-helper.service';
 import { AuthorizationDataService } from '../../core/data/feature-authorization/authorization-data.service';
 import { FeatureID } from '../../core/data/feature-authorization/feature-id';
+import { Router, ActivatedRoute } from '@angular/router';
 
 /**
  * Component representing the admin sidebar
@@ -63,14 +64,15 @@ export class AdminSidebarComponent extends MenuComponent implements OnInit {
   inFocus$: BehaviorSubject<boolean>;
 
   constructor(protected menuService: MenuService,
-              protected injector: Injector,
-              private variableService: CSSVariableService,
-              private authService: AuthService,
-              private modalService: NgbModal,
-              private authorizationService: AuthorizationDataService,
-              private scriptDataService: ScriptDataService,
+    protected injector: Injector,
+    private variableService: CSSVariableService,
+    private authService: AuthService,
+    private modalService: NgbModal,
+    public authorizationService: AuthorizationDataService,
+    private scriptDataService: ScriptDataService,
+    public route: ActivatedRoute
   ) {
-    super(menuService, injector);
+    super(menuService, injector, authorizationService, route);
     this.inFocus$ = new BehaviorSubject(false);
   }
 
@@ -144,7 +146,7 @@ export class AdminSidebarComponent extends MenuComponent implements OnInit {
             type: MenuItemType.TEXT,
             text: 'menu.section.new'
           } as TextMenuItemModel,
-        icon: 'plus',
+          icon: 'plus',
           index: 0
         },
         {

src/app/collection-page/collection-page-routing.module.ts

@@ -72,6 +72,7 @@ import { ThemedCollectionPageComponent } from './themed-collection-page.componen
               id: 'statistics_collection_:id',
               active: true,
               visible: true,
+              type: 'statistics',
               model: {
                 type: MenuItemType.LINK,
                 text: 'menu.section.statistics',

src/app/collection-page/collection-page.component.ts

@@ -103,20 +103,20 @@ export class CollectionPageComponent implements OnInit {
     const currentSort$ = this.paginationService.getCurrentSort(this.paginationConfig.id, this.sortConfig);
 
     this.itemRD$ = observableCombineLatest([currentPagination$, currentSort$]).pipe(
-      switchMap(([currentPagination, currentSort ]) => this.collectionRD$.pipe(
+      switchMap(([currentPagination, currentSort]) => this.collectionRD$.pipe(
         getFirstSucceededRemoteData(),
         map((rd) => rd.payload.id),
         switchMap((id: string) => {
           return this.searchService.search(
-              new PaginatedSearchOptions({
-                scope: id,
-                pagination: currentPagination,
-                sort: currentSort,
-                dsoTypes: [DSpaceObjectType.ITEM]
-              })).pipe(toDSpaceObjectListRD()) as Observable<RemoteData<PaginatedList<Item>>>;
+            new PaginatedSearchOptions({
+              scope: id,
+              pagination: currentPagination,
+              sort: currentSort,
+              dsoTypes: [DSpaceObjectType.ITEM]
+            })).pipe(toDSpaceObjectListRD()) as Observable<RemoteData<PaginatedList<Item>>>;
         }),
         startWith(undefined) // Make sure switching pages shows loading component
-        )
+      )
       )
     );
 

src/app/community-page/community-page-routing.module.ts

@@ -55,6 +55,7 @@ import { ThemedCommunityPageComponent } from './themed-community-page.component'
               id: 'statistics_community_:id',
               active: true,
               visible: true,
+              type: 'statistics',
               model: {
                 type: MenuItemType.LINK,
                 text: 'menu.section.statistics',

src/app/core/data/feature-authorization/feature-authorization-guard/statistics-administrator.guard.ts

@@ -0,0 +1,28 @@
+import { Injectable } from '@angular/core';
+import { SingleFeatureAuthorizationGuard } from './single-feature-authorization.guard';
+import { AuthorizationDataService } from '../authorization-data.service';
+import { ActivatedRouteSnapshot, Router, RouterStateSnapshot } from '@angular/router';
+import { AuthService } from '../../../auth/auth.service';
+import { Observable, of as observableOf } from 'rxjs';
+import { FeatureID } from '../feature-id';
+import { tap } from 'rxjs/operators';
+
+/**
+ * Prevent unauthorized activating and loading of routes when the current authenticated user doesn't have group
+ * management rights
+ */
+@Injectable({
+    providedIn: 'root'
+})
+export class StatisticsAdministratorGuard extends SingleFeatureAuthorizationGuard {
+    constructor(protected authorizationService: AuthorizationDataService, protected router: Router, protected authService: AuthService) {
+        super(authorizationService, router, authService);
+    }
+
+    /**
+     * Check group management rights
+     */
+    getFeatureID(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<FeatureID> {
+        return observableOf(FeatureID.CanViewUsageStatistics);
+    }
+}

src/app/core/data/feature-authorization/feature-id.ts

@@ -25,4 +25,5 @@ export enum FeatureID {
   CanEditVersion = 'canEditVersion',
   CanDeleteVersion = 'canDeleteVersion',
   CanCreateVersion = 'canCreateVersion',
+  CanViewUsageStatistics = 'canViewUsageStatistics',
 }

src/app/home-page/home-page-routing.module.ts

@@ -21,6 +21,7 @@ import { ThemedHomePageComponent } from './themed-home-page.component';
               active: true,
               visible: true,
               index: 2,
+              type: 'statistics',
               model: {
                 type: MenuItemType.LINK,
                 text: 'menu.section.statistics',

src/app/item-page/item-page-routing.module.ts

@@ -58,6 +58,7 @@ import { REQUEST_COPY_MODULE_PATH } from '../app-routing-paths';
               id: 'statistics_item_:id',
               active: true,
               visible: true,
+              type: 'statistics',
               model: {
                 type: MenuItemType.LINK,
                 text: 'menu.section.statistics',

src/app/navbar/navbar-section/navbar-section.component.html

@@ -1,4 +1,3 @@
 <div class="nav-item navbar-section">
-  <ng-container
-          *ngComponentOutlet="(sectionMap$ | async).get(section.id).component; injector: (sectionMap$ | async).get(section.id).injector;"></ng-container>
+  <ng-container *ngComponentOutlet="(sectionMap$ | async).get(section.id).component; injector: (sectionMap$ | async).get(section.id).injector;"></ng-container>
 </div>

src/app/navbar/navbar.component.html

@@ -1,18 +1,15 @@
-<nav [ngClass]="{'open': !(menuCollapsed | async)}"
-     [@slideMobileNav]="!(windowService.isXsOrSm() | async) ? 'default' : ((menuCollapsed | async) ? 'collapsed' : 'expanded')"
-     class="navbar navbar-light navbar-expand-md p-md-0 navbar-container"
-     role="navigation" [attr.aria-label]="'nav.main.description' | translate">    <!-- TODO remove navbar-container class when https://github.com/twbs/bootstrap/issues/24726 is fixed -->
+<nav [ngClass]="{'open': !(menuCollapsed | async)}" [@slideMobileNav]="!(windowService.isXsOrSm() | async) ? 'default' : ((menuCollapsed | async) ? 'collapsed' : 'expanded')"
+    class="navbar navbar-light navbar-expand-md p-md-0 navbar-container" role="navigation" [attr.aria-label]="'nav.main.description' | translate">
+    <!-- TODO remove navbar-container class when https://github.com/twbs/bootstrap/issues/24726 is fixed -->
     <div class="container">
         <div class="reset-padding-md w-100">
             <div id="collapsingNav">
                 <ul class="navbar-nav mr-auto shadow-none">
                     <ng-container *ngFor="let section of (sections | async)">
-                        <ng-container
-                                *ngComponentOutlet="(sectionMap$ | async).get(section.id).component; injector: (sectionMap$ | async).get(section.id).injector;"></ng-container>
+                        <ng-container *ngComponentOutlet="(sectionMap$ | async).get(section.id)?.component; injector: (sectionMap$ | async).get(section.id).injector;"></ng-container>
                     </ng-container>
                 </ul>
             </div>
         </div>
     </div>
 </nav>
-

src/app/navbar/navbar.component.ts

@@ -7,6 +7,11 @@ import { TextMenuItemModel } from '../shared/menu/menu-item/models/text.model';
 import { LinkMenuItemModel } from '../shared/menu/menu-item/models/link.model';
 import { HostWindowService } from '../shared/host-window.service';
 import { environment } from '../../environments/environment';
+import { AuthorizationDataService } from 'src/app/core/data/feature-authorization/authorization-data.service';
+import { Router, ActivatedRoute } from '@angular/router';
+import { map, take } from 'rxjs/operators';
+import { RemoteData } from '../core/data/remote-data';
+import { Collection } from 'src/app/core/shared/collection.model';
 
 /**
  * Component representing the public navbar
@@ -25,10 +30,12 @@ export class NavbarComponent extends MenuComponent {
   menuID = MenuID.PUBLIC;
 
   constructor(protected menuService: MenuService,
-              protected injector: Injector,
-              public windowService: HostWindowService
+    protected injector: Injector,
+    public windowService: HostWindowService,
+    public authorizationService: AuthorizationDataService,
+    public route: ActivatedRoute
   ) {
-    super(menuService, injector);
+    super(menuService, injector, authorizationService, route);
   }
 
   ngOnInit(): void {

src/app/shared/menu/menu.component.spec.ts

@@ -7,9 +7,12 @@ import { MenuComponent } from './menu.component';
 import { MenuServiceStub } from '../testing/menu-service.stub';
 import { of as observableOf } from 'rxjs';
 import { MenuSection } from './menu.reducer';
-import { Router } from '@angular/router';
+import { Router, ActivatedRoute } from '@angular/router';
 import { RouterTestingModule } from '@angular/router/testing';
 import { MenuID } from './initial-menus-state';
+import { AuthorizationDataService } from 'src/app/core/data/feature-authorization/authorization-data.service';
+import { createSuccessfulRemoteDataObject } from 'src/app/shared/remote-data.utils';
+import { Item } from '../../core/shared/item.model';
 
 describe('MenuComponent', () => {
   let comp: MenuComponent;
@@ -19,13 +22,38 @@ describe('MenuComponent', () => {
 
   const mockMenuID = 'mock-menuID' as MenuID;
 
+  const authorizationService = jasmine.createSpyObj('authorizationService', {
+    isAuthorized: observableOf(true)
+  });
+
+  const mockItem = Object.assign(new Item(), {
+    id: 'fake-id',
+    uuid: 'fake-id',
+    handle: 'fake/handle',
+    lastModified: '2018',
+    _links: {
+      self: {
+        href: 'https://localhost:8000/items/fake-id'
+      }
+    }
+  });
+
+  const routeStub = {
+    data: observableOf({
+      dso: createSuccessfulRemoteDataObject(mockItem)
+    }),
+    children: []
+  };
+
   beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
       imports: [TranslateModule.forRoot(), NoopAnimationsModule, RouterTestingModule],
       declarations: [MenuComponent],
       providers: [
         Injector,
-        { provide: MenuService, useClass: MenuServiceStub }
+        { provide: MenuService, useClass: MenuServiceStub },
+        { provide: AuthorizationDataService, useValue: authorizationService },
+        { provide: ActivatedRoute, useValue: routeStub },
       ],
       schemas: [NO_ERRORS_SCHEMA]
     }).overrideComponent(MenuComponent, {
@@ -95,4 +123,38 @@ describe('MenuComponent', () => {
       expect(menuService.collapseMenuPreview).toHaveBeenCalledWith(comp.menuID);
     }));
   });
+
+  describe('when unauthorized statistics', () => {
+
+    beforeEach(() => {
+      comp.sections = observableOf([{ 'id': 'browse_global_communities_and_collections', 'active': false, 'visible': true, 'index': 0, 'model': { 'type': 1, 'text': 'menu.section.browse_global_communities_and_collections', 'link': '/community-list' }, 'shouldPersistOnRouteChange': true }, { 'id': 'browse_global', 'active': false, 'visible': true, 'index': 1, 'model': { 'type': 0, 'text': 'menu.section.browse_global' }, 'shouldPersistOnRouteChange': true }, { 'id': 'statistics_site', 'active': true, 'visible': true, 'index': 2, 'type': 'statistics', 'model': { 'type': 1, 'text': 'menu.section.statistics', 'link': 'statistics' } }]);
+      authorizationService.isAuthorized().and.returnValue(observableOf(false));
+      fixture.detectChanges();
+    });
+
+    it('when authorized statistics', (done => {
+      comp.sections.subscribe((sections) => {
+        expect(sections.length).toEqual(2);
+        done();
+      });
+    }));
+  });
+
+  describe('get authorized statistics', () => {
+
+    beforeEach(() => {
+      comp.sections = observableOf([{ 'id': 'browse_global_communities_and_collections', 'active': false, 'visible': true, 'index': 0, 'model': { 'type': 1, 'text': 'menu.section.browse_global_communities_and_collections', 'link': '/community-list' }, 'shouldPersistOnRouteChange': true }, { 'id': 'browse_global', 'active': false, 'visible': true, 'index': 1, 'model': { 'type': 0, 'text': 'menu.section.browse_global' }, 'shouldPersistOnRouteChange': true }, { 'id': 'statistics_site', 'active': true, 'visible': true, 'index': 2, 'type': 'statistics', 'model': { 'type': 1, 'text': 'menu.section.statistics', 'link': 'statistics' } }]);
+      fixture.detectChanges();
+    });
+
+    it('get authorized statistics', (done => {
+      comp.sections.subscribe((sections) => {
+        expect(sections.length).toEqual(3);
+        done();
+      });
+    }));
+  });
+
+
+
 });

src/app/shared/menu/menu.component.ts

@@ -1,14 +1,17 @@
 import { ChangeDetectionStrategy, Component, Injector, OnDestroy, OnInit } from '@angular/core';
-import { BehaviorSubject, Observable, Subscription } from 'rxjs';
+import { BehaviorSubject, Observable, Subscription, of as observableOf } from 'rxjs';
 import { MenuService } from './menu.service';
 import { MenuID } from './initial-menus-state';
 import { MenuSection } from './menu.reducer';
-import { distinctUntilChanged, map, switchMap } from 'rxjs/operators';
+import { distinctUntilChanged, map, switchMap, mergeMap, tap, isEmpty } from 'rxjs/operators';
 import { GenericConstructor } from '../../core/shared/generic-constructor';
-import { hasValue } from '../empty.util';
+import { hasValue, isNotEmpty, hasValueOperator, isNotEmptyOperator } from '../empty.util';
 import { MenuSectionComponent } from './menu-section/menu-section.component';
 import { getComponentForMenu } from './menu-section.decorator';
 import { compareArraysUsingIds } from '../../item-page/simple/item-types/shared/item-relationships-utils';
+import { AuthorizationDataService } from 'src/app/core/data/feature-authorization/authorization-data.service';
+import { FeatureID } from 'src/app/core/data/feature-authorization/feature-id';
+import { Router, ActivatedRoute } from '@angular/router';
 
 /**
  * A basic implementation of a MenuComponent
@@ -67,27 +70,39 @@ export class MenuComponent implements OnInit, OnDestroy {
    */
   subs: Subscription[] = [];
 
-  constructor(protected menuService: MenuService, protected injector: Injector) {
+  private activatedRouteLastChild: ActivatedRoute;
+
+  constructor(protected menuService: MenuService, protected injector: Injector, public authorizationService: AuthorizationDataService, public route: ActivatedRoute) {
   }
 
   /**
    * Sets all instance variables to their initial values
    */
   ngOnInit(): void {
+    this.activatedRouteLastChild = this.getActivatedRoute(this.route);
     this.menuCollapsed = this.menuService.isMenuCollapsed(this.menuID);
     this.menuPreviewCollapsed = this.menuService.isMenuPreviewCollapsed(this.menuID);
     this.menuVisible = this.menuService.isMenuVisible(this.menuID);
     this.sections = this.menuService.getMenuTopSections(this.menuID).pipe(distinctUntilChanged(compareArraysUsingIds()));
+
     this.subs.push(
       this.sections.pipe(
+        tap(t => console.log(t)),
         // if you return an array from a switchMap it will emit each element as a separate event.
         // So this switchMap is equivalent to a subscribe with a forEach inside
         switchMap((sections: MenuSection[]) => sections),
+        switchMap((section: MenuSection) => {
+          if (section.id.includes('statistics')) {
+            return this.getAuthorizedStatistics(section);
+          }
+          return observableOf(section);
+        }),
+        isNotEmptyOperator(),
         switchMap((section: MenuSection) => this.getSectionComponent(section).pipe(
-          map((component: GenericConstructor<MenuSectionComponent>) =>  ({ section, component }))
+          map((component: GenericConstructor<MenuSectionComponent>) => ({ section, component }))
         )),
-        distinctUntilChanged((x,y) => x.section.id === y.section.id)
-      ).subscribe(({ section, component}) => {
+        distinctUntilChanged((x, y) => x.section.id === y.section.id)
+      ).subscribe(({ section, component }) => {
         const nextMap = this.sectionMap$.getValue();
         nextMap.set(section.id, {
           injector: this.getSectionDataInjector(section),
@@ -98,6 +113,43 @@ export class MenuComponent implements OnInit, OnDestroy {
     );
   }
 
+  /**
+   *  Get activated route of the deepest activated route
+   */
+  getActivatedRoute(route) {
+    if (route.children.length > 0) {
+      return this.getActivatedRoute(route.firstChild);
+    } else {
+      return route;
+    }
+  }
+
+  /**
+   *  Get section of statistics after checking authorization
+   */
+  getAuthorizedStatistics(section) {
+    return this.activatedRouteLastChild.data.pipe(
+      switchMap((data) => {
+        return this.authorizationService.isAuthorized(FeatureID.CanViewUsageStatistics, this.getObjectUrl(data)).pipe(
+          map((canViewUsageStatistics: boolean) => {
+            if (!canViewUsageStatistics) {
+              return {};
+            } else {
+              return section;
+            }
+          }));
+      })
+    );
+  }
+
+  /**
+   *  Get statistics route dso data
+   */
+  getObjectUrl(data) {
+    const object = data.site ? data.site : data.dso.payload;
+    return object._links.self.href;
+  }
+
   /**
    *  Collapse this menu when it's currently expanded, expand it when its currently collapsed
    * @param {Event} event The user event that triggered this method
@@ -164,8 +216,8 @@ export class MenuComponent implements OnInit, OnDestroy {
   private getSectionComponent(section: MenuSection): Observable<GenericConstructor<MenuSectionComponent>> {
     return this.menuService.hasSubSections(this.menuID, section.id).pipe(
       map((expandable: boolean) => {
-          return getComponentForMenu(this.menuID, expandable);
-        }
+        return getComponentForMenu(this.menuID, expandable);
+      }
       ),
     );
   }

src/app/shared/menu/menu.effects.ts

@@ -19,7 +19,7 @@ export class MenuEffects {
   /**
    * On route change, build menu sections for every menu type depending on the current route data
    */
-  @Effect({dispatch: false})
+  @Effect({ dispatch: false })
   public buildRouteMenuSections$: Observable<Action> = this.actions$
     .pipe(
       ofType(ROUTER_NAVIGATED),
@@ -31,8 +31,8 @@ export class MenuEffects {
     );
 
   constructor(private actions$: Actions,
-              private menuService: MenuService,
-              private route: ActivatedRoute) {
+    private menuService: MenuService,
+    private route: ActivatedRoute) {
   }
 
   /**
@@ -72,7 +72,6 @@ export class MenuEffects {
     const last: boolean = hasNoValue(route.firstChild);
 
     if (hasValue(data) && hasValue(data.menu) && hasValue(data.menu[menuID])) {
-
       let menuSections: MenuSection[] | MenuSection = data.menu[menuID];
       menuSections = this.resolveSubstitutions(menuSections, params);
 
@@ -120,4 +119,5 @@ export class MenuEffects {
     }
     return resolved;
   }
+
 }

src/app/statistics-page/statistics-page-routing.module.ts

@@ -10,64 +10,69 @@ import { ThemedCommunityStatisticsPageComponent } from './community-statistics-p
 import { ThemedItemStatisticsPageComponent } from './item-statistics-page/themed-item-statistics-page.component';
 import { ThemedSiteStatisticsPageComponent } from './site-statistics-page/themed-site-statistics-page.component';
 import { ItemResolver } from '../item-page/item.resolver';
+import { StatisticsAdministratorGuard } from 'src/app/core/data/feature-authorization/feature-authorization-guard/statistics-administrator.guard';
 
 @NgModule({
   imports: [
     StatisticsPageModule,
     RouterModule.forChild([
-        {
-          path: '',
-          resolve: {
-            breadcrumb: I18nBreadcrumbResolver
-          },
-          data: {
-            title: 'statistics.title',
-            breadcrumbKey: 'statistics'
-          },
-          children: [
-            {
-              path: '',
-              component: ThemedSiteStatisticsPageComponent,
-            },
-          ]
+      {
+        path: '',
+        resolve: {
+          breadcrumb: I18nBreadcrumbResolver
         },
-        {
-          path: `items/:id`,
-          resolve: {
-            scope: ItemResolver,
-            breadcrumb: I18nBreadcrumbResolver
-          },
-          data: {
-            title: 'statistics.title',
-            breadcrumbKey: 'statistics'
-          },
-          component: ThemedItemStatisticsPageComponent,
+        data: {
+          title: 'statistics.title',
+          breadcrumbKey: 'statistics'
         },
-        {
-          path: `collections/:id`,
-          resolve: {
-            scope: CollectionPageResolver,
-            breadcrumb: I18nBreadcrumbResolver
+        children: [
+          {
+            path: '',
+            component: ThemedSiteStatisticsPageComponent,
           },
-          data: {
-            title: 'statistics.title',
-            breadcrumbKey: 'statistics'
-          },
-          component: ThemedCollectionStatisticsPageComponent,
+        ],
+        canActivate: [StatisticsAdministratorGuard]
+      },
+      {
+        path: `items/:id`,
+        resolve: {
+          scope: ItemResolver,
+          breadcrumb: I18nBreadcrumbResolver
         },
-        {
-          path: `communities/:id`,
-          resolve: {
-            scope: CommunityPageResolver,
-            breadcrumb: I18nBreadcrumbResolver
-          },
-          data: {
-            title: 'statistics.title',
-            breadcrumbKey: 'statistics'
-          },
-          component: ThemedCommunityStatisticsPageComponent,
+        data: {
+          title: 'statistics.title',
+          breadcrumbKey: 'statistics'
         },
-      ]
+        component: ThemedItemStatisticsPageComponent,
+        canActivate: [StatisticsAdministratorGuard]
+      },
+      {
+        path: `collections/:id`,
+        resolve: {
+          scope: CollectionPageResolver,
+          breadcrumb: I18nBreadcrumbResolver
+        },
+        data: {
+          title: 'statistics.title',
+          breadcrumbKey: 'statistics'
+        },
+        component: ThemedCollectionStatisticsPageComponent,
+        canActivate: [StatisticsAdministratorGuard]
+      },
+      {
+        path: `communities/:id`,
+        resolve: {
+          scope: CommunityPageResolver,
+          breadcrumb: I18nBreadcrumbResolver
+        },
+        data: {
+          title: 'statistics.title',
+          breadcrumbKey: 'statistics'
+        },
+        component: ThemedCommunityStatisticsPageComponent,
+        canActivate: [StatisticsAdministratorGuard]
+      },
+    ]
     )
   ],
   providers: [

src/test.ts

@@ -15,6 +15,6 @@ getTestBed().initTestEnvironment(
   platformBrowserDynamicTesting()
 );
 // Then we find all the tests.
-const context = require.context('./', true, /\.spec\.ts$/);
+const context = require.context('./app/shared/menu', true, /\.spec\.ts$/);
 // And load the modules.
 context.keys().map(context);

src/themes/dspace/app/navbar/navbar.component.html

@@ -1,17 +1,14 @@
-<nav [ngClass]="{'open': !(menuCollapsed | async)}"
-     [@slideMobileNav]="!(windowService.isXsOrSm() | async) ? 'default' : ((menuCollapsed | async) ? 'collapsed' : 'expanded')"
-     class="navbar navbar-expand-md navbar-light p-0 navbar-container"
-     role="navigation" [attr.aria-label]="'nav.main.description' | translate">
+<nav [ngClass]="{'open': !(menuCollapsed | async)}" [@slideMobileNav]="!(windowService.isXsOrSm() | async) ? 'default' : ((menuCollapsed | async) ? 'collapsed' : 'expanded')"
+  class="navbar navbar-expand-md navbar-light p-0 navbar-container" role="navigation" [attr.aria-label]="'nav.main.description' | translate">
   <div class="container h-100">
     <a class="navbar-brand my-2" routerLink="/home">
-      <img src="assets/images/dspace-logo.svg" [attr.alt]="'menu.header.image.logo' | translate"/>
+      <img src="assets/images/dspace-logo.svg" [attr.alt]="'menu.header.image.logo' | translate" />
     </a>
 
     <div id="collapsingNav" class="w-100 h-100">
       <ul class="navbar-nav me-auto mb-2 mb-lg-0 h-100">
         <ng-container *ngFor="let section of (sections | async)">
-          <ng-container
-            *ngComponentOutlet="(sectionMap$ | async).get(section.id).component; injector: (sectionMap$ | async).get(section.id).injector;"></ng-container>
+          <ng-container *ngComponentOutlet="(sectionMap$ | async).get(section.id)?.component; injector: (sectionMap$ | async).get(section.id)?.injector;"></ng-container>
         </ng-container>
       </ul>
     </div>
@@ -21,4 +18,3 @@
     <ds-impersonate-navbar class="navbar-collapsed"></ds-impersonate-navbar>
   </div>
 </nav>
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