Eu defini um número de rotas da seguinte maneira:

export const AppRoutes: Routes = [
  {path: '', component: HomeComponent, data: {titleKey: 'homeTitle'}},
  {path: 'signup', component: SignupComponent, data: {titleKey: 'SIGNUP_FORM.TITLE'}},
  {path: 'signin', component: SigninComponent, data: {titleKey: 'SIGNIN_FORM.TITLE'}},
  {path: 'sendpasswordresetinformation', component: SendPasswordResetInformationComponent},
  {path: 'password/reset/:userAccountToken', component: PasswordResetComponent},
  {
    path: 'dashboard', component: DashboardComponent, children: [
    {path: '', component: DashboardSummaryComponent},
    {
      path: 'message', children: [
      {path: '', component: MessageSummaryComponent, data: {titleKey: 'MESSAGE_LIST.TITLE'}},
      {path: 'conversation/:otherId', component: MessageConversationComponent, data: {titleKey: 'XXX'}}]
    },
    {
      path: 'useraccount', component: UserAccountComponent, children: [
      {
        path: '',
        component: UserAccountSummaryComponent,
        data: {titleKey: 'XXX'},
        resolve: {
          userAccount: UserAccountResolve
        }
      },
      {path: 'address', component: UserAccountAddressComponent, data: {titleKey: 'ADDRESS_FORM.TITLE'}},
      {path: 'email', component: UserAccountEmailComponent, data: {titleKey: 'EMAIL_FORM.TITLE'}},
      {
        path: 'emailnotification',
        component: UserAccountEmailNotificationComponent,
        data: {titleKey: 'EMAIL_NOTIFICATION_FORM.TITLE'}
      },
      {path: 'firstname', component: UserAccountFirstNameComponent, data: {titleKey: 'FIRST_NAME_FORM.TITLE'}},
      {path: 'password', component: UserAccountPasswordComponent, data: {titleKey: 'PASSWORD_FORM.TITLE'}}]
    }]
  }];

Algumas das rotas são filhos de outras.

Gostaria de encontrar uma maneira de recuperar otitleKey propriedade emdata independentemente de o percurso ser de nível superior ou filho de outro.

Aqui está o que eu tentei:

export class AppComponent implements OnInit {

  constructor(private translate: TranslateService,
              private sessionService: SessionService,
              private titleService: Title,
              private activatedRoute: ActivatedRoute) {
    let userLang = 'fr';
    translate.use(userLang);
    moment.locale(userLang);
  }

  ngOnInit() {
    this.sessionService.reloadPersonalInfo();
  }

  setTitle($event) { 
    this.translate.get(this.activatedRoute.snapshot.data['titleKey'])
     .subscribe(translation=>this.titleService.setTitle(translation));
  }
}

this.activatedRoute.snapshot.data['titleKey'] éundefined.

Alguém pode aconselhar como recuperar uma propriedade na rotadata independentemente do nível de aninhamento da rota?

editar: Depois de ler o funcionáriodocumentação angular sobre ActivatedRoute, Tentei usar omap operador na propriedade de dados doActivatedRoute instância da seguinte maneira:

@Component({
  selector: 'app',
  template: `
              <section class="container-fluid row Conteneur">
                 <appNavbar></appNavbar>
                 <section class="container">
                    <router-outlet (activate)="setTitle($event)"></router-outlet>
                 </section>
              </section>
              <section class="container-fluid">  
                <appFooter></appFooter>
              </section>
              `,
  directives: [NavbarComponent, FooterComponent, SigninComponent, HomeComponent, ROUTER_DIRECTIVES]
})
export class AppComponent implements OnInit {

  constructor(private translate: TranslateService,
              private sessionService: SessionService,
              private titleService: Title,
              private activatedRoute: ActivatedRoute) {
    let userLang = 'fr';
    translate.use(userLang);
    moment.locale(userLang);
  }

  ngOnInit() {
    this.sessionService.reloadPersonalInfo();
  }

  setTitle($event) {
    this.activatedRoute.data.map(data=>data['titleKey'])
      .do(key=>console.log(key))
      .switchMap(key=>this.translate.get(key))
      .subscribe(translation=>this.titleService.setTitle(translation));
  }
}

e aindakey é sempre indefinido ...