Angular Architectures with Signals

Transcript

1. @ManfredSteyer
   ManfredSteyer
   Angular Architectures with Signals
   

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2. @ManfredSteyer
   Signal
   as Producer
   4711
   Consumer
   read
   set
   notify
   4712
   

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3. @ManfredSteyer
   flights = signal([]);
   const flights = await this.flightService.findAsPromise(from, to);
   this.flights.set(flights);
   
   
   
   

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4. @ManfredSteyer
   Simple
   Reactive
   Building Block
   Fine-grained
   CD
   Zone-less CD
   Interop with
   RxJS
   No need to
   unsubscribe
   

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5. @ManfredSteyer
   

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6. @ManfredSteyer
   

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7. @ManfredSteyer
   Manfred Steyer
   

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8. @ManfredSteyer
   

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9. @ManfredSteyer
   

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10. @ManfredSteyer
    

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11. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    private _flights = signal([]);
    readonly flights = this._flights.asReadonly();
    async load(from: string, to: string) {
    const flights = await […];
    this._flights.set(flights);
    }
    }
    

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12. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    private _flights = signal([]);
    readonly flights = this._flights.asReadonly();
    async load(from: string, to: string) {
    const flights = await […];
    this._flights.set(flights);
    }
    }
    

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13. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    private _flights = signal([]);
    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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14. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    private state = signal({
    from: 'Hamburg',
    to: 'Graz',
    flights: [] as Flight[], […]
    });
    […]
    }
    

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15. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    private state = signal({
    from: 'Hamburg',
    to: 'Graz',
    flights: [] as Flight[], […]
    });
    readonly flights = computed(() => this.state().flights);
    readonly from = computed(() => this.state().from);
    […]
    }
    

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16. @ManfredSteyer
    

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17. @ManfredSteyer
    

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18. @ManfredSteyer
    select(selector)
    selectSignal(selector)
    

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19. @ManfredSteyer
    

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20. @ManfredSteyer
    

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21. @ManfredSteyer
    

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22. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    private state = signalState({
    from: 'Paris',
    to: 'London',
    flights: [] as Flight[],
    basket: {} as Record,
    });
    readonly flights = this.state.flights;
    readonly from = this.state.from;
    […]
    }
    

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23. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    readonly selected = computed(
    () => this.flights().filter((f) => this.basket()[f.id])
    );
    […]
    }
    

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24. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    updateCriteria(from: string, to: string): void {
    patchState(this.state, { from, to })
    }
    […]
    }
    

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25. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    updateCriteria(from: string, to: string): void {
    patchState(this.state, (state) => ({ from, to }));
    }
    […]
    }
    

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26. @ManfredSteyer
    @Injectable({ providedIn: 'root' })
    export class FlightBookingFacade {
    […]
    updateCriteria(from: string, to: string): void {
    patchState(this.state, updateRoute(from, to));
    }
    […]
    }
    function updateRoute(from: string, to: string) {
    return (state: T) => ({ from, to })
    }
    

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27. @ManfredSteyer
    private state = signalState({
    filter: {
    from: 'Paris',
    to: 'London',
    },
    flights: [] as Flight[],
    basket: {} as Record,
    });
    filter = this.state.filter();
    from = this.state.filter.from();
    to = this.state.filter.to();
    

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28. @ManfredSteyer
    

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29. @ManfredSteyer
    

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

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31. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    { providedIn: 'root' },
    withState({
    from: 'Paris',
    to: 'London',
    […]
    }),
    […]
    );
    

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32. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    { providedIn: 'root' },
    withState({
    from: 'Paris',
    to: 'London',
    […]
    }),
    withComputed(([…]) => ({ […] })),
    withMethods(([…]) => ({ })),
    withHooks({ […] })
    );
    

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33. @ManfredSteyer
    

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34. @ManfredSteyer
    

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35. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    […]
    withMethods((state) => {
    […]
    return {
    connectCriteria: rxMethod((c$) => c$.pipe([…]))
    };
    }),
    […]
    );
    

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36. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    […]
    withMethods((state) => {
    […]
    return {
    connectCriteria: rxMethod((c$) => c$.pipe([…]))
    };
    }),
    […]
    );
    

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37. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    […]
    withMethods((state) => {
    […]
    return {
    connectCriteria: rxMethod((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 }))
    ))
    };
    }),
    […]
    );
    

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38. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    […]
    withHooks({
    onInit({ connectCriteria, criteria }) {
    connectCriteria(criteria);
    },
    }),
    );
    takes: Signal, Observable, T
    

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39. @ManfredSteyer
    

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40. @ManfredSteyer
    

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41. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    { providedIn: 'root' },
    withState({
    from: 'Paris',
    to: 'London',
    […]
    }),
    withSignals(([…]) => ({ […] })),
    withMethods(([…]) => ({ })),
    withHooks({ […] }),
    withCallState()
    );
    

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42. @ManfredSteyer
    export const FlightBookingStore = signalStore(
    { providedIn: 'root' },
    withState({
    from: 'Paris',
    to: 'London',
    […]
    }),
    withSignals(([…]) => ({ […] })),
    withMethods(([…]) => ({ })),
    withHooks({ […] }),
    withCallState()
    );
    

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43. @ManfredSteyer
    

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44. @ManfredSteyer
    

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45. @ManfredSteyer
    const BooksStore = signalStore(
    withEntities({ collection: 'book' }),
    withEntities({ collection: 'author' })
    );
    

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46. @ManfredSteyer
    const BooksStore = signalStore(
    withLoadEntities(BookService),
    withLoadEntities(AuthorService),
    );
    

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

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48. @ManfredSteyer
    Services +
    Signals
    NGRX
    NGRX
    Signal Store
    Different
    Flavors
    rxMethod
    Custom
    Features
    

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

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