Modern State Management in Angular: The 3+n Flavors of the NGRX Signal Store

Transcript

1. @ManfredSteyer ManfredSteyer Modern State Management in Angular: The 3+n Flavors of the NGRX Signal Store ANGULAR Hungary
2. @ManfredSteyer Signal as Producer 4711 Consumer read set notify 4712
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5. @ManfredSteyer Manfred Steyer
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7. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] private _flights = signal<Flight[]>([]); readonly flights = this._flights.asReadonly(); async load(from: string, to: string) { const flights = await […]; this._flights.set(flights); } }
8. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] private _flights = signal<Flight[]>([]); readonly flights = this._flights.asReadonly(); async load(from: string, to: string) { const flights = await […]; this._flights.set(flights); } }
9. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] private _flights = signal<Flight[]>([]); readonly flights = this._flights.asReadonly(); private _from = signal('Hamburg'); readonly from = this._from.asReadonly(); private _to = signal('Graz'); readonly to = this._to.asReadonly(); […] }
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11. @ManfredSteyer select(selector) selectSignal(selector)
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14. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { private state = signalState({ from: 'Paris', to: 'London', flights: [] as Flight[], basket: {} as Record<number, boolean>, }); readonly flights = this.state.flights; readonly from = this.state.from; […] }
15. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] readonly selected = computed( () => this.flights().filter((f) => this.basket()[f.id]) ); […] }
16. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] updateCriteria(from: string, to: string): void { patchState(this.state, { from, to }) } […] }
17. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] updateCriteria(from: string, to: string): void { patchState(this.state, (state) => ({ from: to, to: from })); } […] }
18. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] updateCriteria(from: string, to: string): void { patchState(this.state, updateRoute(from, to)); } […] } function updateRoute<T>(from: string, to: string) { return (state: T) => ({ from: to, to: from }) }
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20. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, […] );
21. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), […] );
22. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), withComputed(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }) );
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25. @ManfredSteyer const BooksStore = signalStore( withEntities({ entity: type<Flight>(), collection: 'flight' }), );
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27. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), withSignals(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }), withCallState() );
28. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), withSignals(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }), withCallState() );
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34. @ManfredSteyer Michael Egger-Zikes Rainer Hahnekamp Manfred Steyer
35. @ManfredSteyer Free eBook (5th Edition) ANGULARarchitects.io/book Module Federation & Nx
36. @ManfredSteyer Services + Signals NGRX NGRX Signal Store Different Flavors Custom Features Typed
37. @ManfredSteyer • Maintainable Architectures • Standalone Components & APIs • Micro Frontends and Module Federation • Signals and Your Architecture: CD, NGRX Signal Store, RxJS-Interop Public or Company Training, Remote or On-Site English: angulararchitects.io/workshop-en German: angulararchitects.io/workshop-de
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