Routing into the Sunset with Angular

Transcript

1. Routing into the Sunset with Angular Manfred Steyer ManfredSteyer

2. About me… • Manfred Steyer • SOFTWAREarchitekt.at • Trainer &

   Consultant • Focus: Angular • Google Developer Expert (GDE) Page ▪ 2 Manfred Steyer

3. Contents • Basics • Child Routes • Aux Routes •

   Guards • Lazy Loading

4. Angular Router Page ▪ 4

5. Routing in Angular Page ▪ 5 Logo + Menu Menu

   2 Footer SPA Placeholder

6. Routing in Angular Page ▪ 6 Logo + Menu Menu

   2 Footer SPA Passenger- Component /FlightApp/passenger

7. Configuration Page ▪ 7 const APP_ROUTES: Routes = [ {

   path: 'home', component: HomeComponent }, { path: 'flight-search', component: FlightSearchComponent }, { path: '**', redirectTo: 'home' } ]

8. Configuration Page ▪ 8 // app.module.ts @NgModule({ imports: [ BrowserModule,

   HttpModule, FormsModule, RouterModule.forRoot(ROUTE_CONFIG) ], […] }) export class AppModule { } For Root-Module For Feature-Module: forChild

9. AppComponent Page ▪ 9 <a routerLink="/home">Home</a> <a routerLink="/flight-search">Flight Search</a> <div>

   <router-outlet></router-outlet> </div>

10. Parameters • passagier/7 • passagier/7?details=true&page=7 • passagier/7;details=true;page=7 • passagier/7;details=true;page=7/fluege Page

    ▪ 10

11. Parameters Page ▪ 11 const APP_ROUTES: Routes = [ […]

    { path: 'flight-search', component: FlightSearchComponent }, { path: 'flight-edit/:id', component: FlightEditComponent } }

12. Reading Parameters Page ▪ 12 export class FlightEditComponent { public

    id: string; constructor( private route: ActivatedRoute) { route.params.subscribe( p => { this.id = p['id']; […] } ); } […] }

13. Links for Routen with Parameters Page ▪ 13 <a [routerLink]="['/flight-edit',

    flug.id, {showDetails: true}]">Edit</a>

14. Hierarchical Routing Page ▪ 14

15. Hierarchical Routing Page ▪ 15 Logo + Menu Menu 2

    Footer SPA Placeholder 1

16. Hierarchical Routing Page ▪ 16 Logo + Menu Menu 2

    Footer SPA /FlightDemo/flight-booking FlightBookingComponent

17. Hierarchical Routing Page ▪ 17 Logo + Menu Menu 2

    Footer SPA Options Placeholder FlightBookingComponent /FlightDemo/flight-booking

18. Hierarchical Routing Page ▪ 18 Logo + Menu Menu 2

    Footer SPA Optionen Passenger Component FlightBookingComponent /FlightDemo/flight-booking/passenger

19. Configuration Page ▪ 19 const APP_ROUTES: Routes = [ {

    path: '', component: HomeComponent }, { path: 'flight-booking', component: FlightBookingComponent, children: [ { path: 'flight-search', component: FlightSearchComponent }, […] ] } ];

20. DEMO Page ▪ 20 App Home Flight Booking Flight Search

    Flight Edit Passenger Search Other Stuff

21. Aux Routes

22. Aux-Routes Page ▪ 22 Logo + Menu Menu 2 Footer

    SPA Placeholder Named Placeholder

23. Aux-Routes Page ▪ 23 Logo + Menu Menu 2 Footer

    SPA Flight- Component Named Placeholder /FlightApp/flights

24. Aux-Routes Page ▪ 24 Logo + Menu Menu 2 Footer

    SPA Flight- Component Info-Component /FlightApp/flights(aux:info)

25. Aux-Routes Page ▪ 25 Logo + Menu Menu 2 Footer

    SPA Flight- Component Modal-Component /FlightApp/flights(aux:info/modal)

26. Aux-Routes Page ▪ 26 Logo + Menu Menu 2 Footer

    SPA Flight-Edit- Component Modal-Component /FlightApp/flights(aux:info/modal)/edit/17

27. Use Cases • Partly autonomous parts of an application •

    „Norton Commander Style“ • (CSS-based) Popups and Modals

28. DEMO Page ▪ 28

29. Guards Page ▪ 29

30. What are Guard? • Services • Can prevent the Activation

    or Deactivation of a Route Page ▪ 30

31. Guards Result: boolean | Observable<boolean> | Promise<boolean> CanActivate canActivate CanActivateChild

    canActivateChild CanLoad canLoad CanDeactivate<T> canDeactivate

32. Guards in der Konfiguration Page ▪ 33 const APP_ROUTES: Routes

    = [ { path: '/flight-booking', component: FlightBookingComponent, canActivate: [AuthGuard], children: [ { path: 'flight-edit/:id', component: FlightEditComponent, canDeactivate: [FlightEditGuard] }, […] ] ] Token

33. Provider für Guards Page ▪ 35 // app.module.ts @NgModule({ providers:

    [ FlightEditGuard, AuthGuard ], […] }) export class AppModule { }

34. DEMO Page ▪ 36

35. Lazy Loading

36. Root Module with Lazy Loading Page ▪ 45 const APP_ROUTE_CONFIG:

    Routes = [ { path: 'home', component: HomeComponent }, { path: 'flights', loadChildren: './[…]flight-booking.module#FlightBookingModule' } ];

37. Routes for Feature Module Page ▪ 46 const FLIGHT_ROUTES =

    [ { path: '/bookings', component: FlightBookingComponent, […] }, […] } Url: /flights/bookings Triggers Lazy Loading

38. Preloading

39. Idea • Modules that might be needed later are loaded

    after (!) the start of the application • When the module is actually needed, it is available immediately Page ▪ 49

40. Activating Preloading Page ▪ 50 const AppRoutesModule = RouterModule.forRoot( ROUTE_CONFIG,

    { preloadingStrategy: PreloadAllModules });

41. Lazy Loading and Shared Modules Page ▪ 51

42. DEMO Page ▪ 52

43. Lazy Loading and Shared Modules Page ▪ 53 AppModule FlightModule

    SharedModule includes includes (lazy) includes AuthService

44. Lazy Loading and Shared Modules Page ▪ 54 AppModule FlightModule

    SharedModule includes includes (lazy) includes AuthService AuthService

45. Lazy Loading and Shared Modules Page ▪ 55 AppModule FlightModule

    SharedModule includes includes (lazy) includes AuthService AuthService

46. Solution Page ▪ 56 AppModule FlightModule SharedModule includes (lazy) includes

    CoreModule includes includes Only import CoreModule into AppModule! Global Providers like AuthService & Shell

47. DEMO

48. Huge CoreModule? Page ▪ 58 AppModule FlightModule SharedModule includes (lazy)

    includes CoreModule includes includes

49. Solution Page ▪ 59 AppModule FlightModule AuthModule includes (lazy) CoreModule

50. Solution Page ▪ 60 AppModule FlightModule AuthModule includes (lazy) includes

    (with Services) CoreModule includes includes (without Services)

51. Auth Module Page ▪ 61 @NgModule({ […], providers: [] })

    export class AuthModule { }

52. Auth Module Page ▪ 62 @NgModule({ […], providers: [] })

    export class AuthModule { static forRoot(): ModuleWithProviders { return { ngModule: AuthModule, providers: [AuthService, […]] } } }

53. DEMO Page ▪ 63

54. Conclusion Child Routes Aux Routes Guards Lazy Loading

55. Downloads and Contact [mail] manfred.steyer@SOFTWAREarchitekt.at [blog] SOFTWAREarchitekt.at [twitter] ManfredSteyer