Routing into the Sunset with Angular

Talk from International JavaScript Conference in Munich, October 2017

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