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

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

@ManfredSteyer Signal as Producer 4711 Consumer read set notify 4712

@ManfredSteyer

@ManfredSteyer Manfred Steyer

@ManfredSteyer

@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); } }

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(); […] }

@ManfredSteyer

@ManfredSteyer select(selector) selectSignal(selector)

@ManfredSteyer

@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; […] }

readonly selected = computed( () => this.flights().filter((f) => this.basket()[f.id]) ); […] }

updateCriteria(from: string, to: string): void { patchState(this.state, { from, to }) } […] }

updateCriteria(from: string, to: string): void { patchState(this.state, (state) => ({ from: to, to: from })); } […] }

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 }) }

@ManfredSteyer

@ManfredSteyer export const FlightBookingStore = signalStore( { providedIn: 'root' },
[…] );

withState({ from: 'Paris', to: 'London', […] }), […] );

withState({ from: 'Paris', to: 'London', […] }), withComputed(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }) );

@ManfredSteyer

@ManfredSteyer const BooksStore = signalStore( withEntities({ entity: type<Flight>(), collection: 'flight'
}), );

@ManfredSteyer

withState({ from: 'Paris', to: 'London', […] }), withSignals(([…]) => ({ […] })), withMethods(([…]) => ({ })), withHooks({ […] }), withCallState() );

@ManfredSteyer

@ManfredSteyer Michael Egger-Zikes Rainer Hahnekamp Manfred Steyer

@ManfredSteyer Free eBook (5th Edition) ANGULARarchitects.io/book Module Federation & Nx

@ManfredSteyer Services + Signals NGRX NGRX Signal Store Different Flavors
Custom Features Typed

@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

@ManfredSteyer d Slides & Examples Remote Company Workshops and Consulting
http://angulararchitects.io

Modern State Management in Angular: The 3+n Fla...

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

More Decks by Manfred Steyer

Other Decks in Programming

Featured

Transcript