The New NGRX Signal Store for Angular: 3+n Flavors

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1. @ManfredSteyer ManfredSteyer The New NGRX Signal Store for Angular: 3+n Flavors
2. @ManfredSteyer Signal as Producer 4711 Consumer read set notify 4712
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5. @ManfredSteyer flights = signal<Flight[]>([]); const flights = await this.flightService.findAsPromise(from, to); this.flights.set(flights); <div *ngFor="let f of flights()"> <flight-card [item]="f" /> </div>
6. @ManfredSteyer from = signal('Paris'); to = signal('London'); flightRoute = computed(() => this.from() + ' to ' + this.to()); constructor() { effect(() => { console.log('from', this.from()); console.log('to', this.to()); }); }
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8. @ManfredSteyer Component Store Intention Signal
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11. @ManfredSteyer Manfred Steyer
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13. @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; […] }
14. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] readonly selected = computed( () => this.flights().filter((f) => this.basket()[f.id]) ); […] }
15. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] updateCriteria(from: string, to: string): void { patchState(this.state, { from, to }) } […] }
16. @ManfredSteyer @Injectable({ providedIn: 'root' }) export class FlightBookingFacade { […] updateCriteria(from: string, to: string): void { patchState(this.state, (state) => ({ from: state.to, to: state.from })); } […] }
17. @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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19. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, […] );
20. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), […] );
21. @ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' }, withState({ from: 'Paris', to: 'London', […] }), withComputed(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }) );
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24. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { connectCriteria: rxMethod<Criteria>((c$) => c$.pipe([…])) }; }), […] );
25. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { connectCriteria: rxMethod<Criteria>((c$) => c$.pipe([…])) }; }), […] );
26. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { connectCriteria: rxMethod<Criteria>((c$) => c$.pipe( filter(c => c.from.length >= 3 && c.to.length >= 3), debounceTime(300), switchMap((c) => flightService.find(c.from, c.to)), tap(flights => patchState(state, { flights })) )) }; }), […] );
27. @ManfredSteyer export const FlightBookingStore = signalStore( […] withMethods((state) => { […] return { connectCriteria: rxMethod<Criteria>((c$) => c$.pipe( filter(c => c.from.length >= 3 && c.to.length >= 3), debounceTime(300), switchMap((c) => flightService.find(c.from, c.to)), tap(flights => patchState(state, { flights })) )) }; }), […] );
28. @ManfredSteyer export const FlightBookingStore = signalStore( […] withHooks({ onInit({ connectCriteria, criteria }) { connectCriteria(criteria); }, }), ); takes: Signal<T>, Observable<T>, T
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30. @ManfredSteyer const BookingStore = signalStore( withEntities<FlightState>() );
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36. @ManfredSteyer Michael Egger-Zikes Rainer Hahnekamp Manfred Steyer
37. @ManfredSteyer Free eBook (6th Edition) ANGULARarchitects.io/book 20 Chapters 4 new Signal Store Chapters
38. @ManfredSteyer Signals: Future of CD Take Care of Data Flow Signal Store: Lightweight Different Flavors Highly Extensible Typed
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40. @ManfredSteyer d Slides & Examples Remote Company Workshops and Consulting http://angulararchitects.io