Angular Architectures with NgRx Stores & Effects

Angular offers many possibilities in the frontend, but also some challenges. If an application grows, sooner or later you have to deal with the issue of the state of the application. But what do "stateful" and "stateless" mean anyway? What are "Container Components" and "Presentation Components"? And how do I get a clean grip on the state of my application in the frontend? Tools like NgRx can help us to design our application cleanly and especially for large applications they help to keep track of the state. In this talk by Fabian Gosebrink, you will learn how these tools can be used and help you to manage even large applications with Angular.

Transcript

1. ARCHITECTURES WITH STORES & EFFECTS
2. FABIAN GOSEBRINK
3. Component Component Component Component Component
4. Component Component Component REST Component Component
5. REST Component Component Component Component Component
8. O N E W A Y D A T A F L O W
9. Component Component Component REST Component Component
10. Component Component Component REST Component Component
11. S T A T E F U L
12. Component Component Component REST Component Component
13. Component Component Component REST Component Component
14. export class ContentComponent implements OnInit { private readonly service = inject(Service); items: Todo[]; doneItems: Todo[]; ngOnInit() { this.service.getData() .subscribe(data => this.items = data); this.service.detDoneItems() .subscribe(data => this.doneItems = data); } addTodo(item: string) { // ... } markAsDone(item: Todo) { // ... } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
15. export class ContentComponent implements OnInit { private readonly service = inject(Service); items: Todo[]; doneItems: Todo[]; ngOnInit() { this.service.getData() .subscribe(data => this.items = data); this.service.detDoneItems() .subscribe(data => this.doneItems = data); } addTodo(item: string) { // ... } markAsDone(item: Todo) { // ... } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 doneItems: Todo[]; export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22
16. export class ContentComponent implements OnInit { private readonly service = inject(Service); items: Todo[]; doneItems: Todo[]; ngOnInit() { this.service.getData() .subscribe(data => this.items = data); this.service.detDoneItems() .subscribe(data => this.doneItems = data); } addTodo(item: string) { // ... } markAsDone(item: Todo) { // ... } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 doneItems: Todo[]; export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 this.service.getData() .subscribe(data => this.items = data); export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 8 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22
17. export class ContentComponent implements OnInit { private readonly service = inject(Service); items: Todo[]; doneItems: Todo[]; ngOnInit() { this.service.getData() .subscribe(data => this.items = data); this.service.detDoneItems() .subscribe(data => this.doneItems = data); } addTodo(item: string) { // ... } markAsDone(item: Todo) { // ... } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 doneItems: Todo[]; export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 this.service.getData() .subscribe(data => this.items = data); export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 8 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 this.service.detDoneItems() .subscribe(data => this.doneItems = data); export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 11 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22
18. export class ContentComponent implements OnInit { private readonly service = inject(Service); items: Todo[]; doneItems: Todo[]; ngOnInit() { this.service.getData() .subscribe(data => this.items = data); this.service.detDoneItems() .subscribe(data => this.doneItems = data); } addTodo(item: string) { // ... } markAsDone(item: Todo) { // ... } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 doneItems: Todo[]; export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 this.service.getData() .subscribe(data => this.items = data); export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 8 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 this.service.detDoneItems() .subscribe(data => this.doneItems = data); export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 11 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 addTodo(item: string) { // ... } export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 15 16 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22
19. export class ContentComponent implements OnInit { private readonly service = inject(Service); items: Todo[]; doneItems: Todo[]; ngOnInit() { this.service.getData() .subscribe(data => this.items = data); this.service.detDoneItems() .subscribe(data => this.doneItems = data); } addTodo(item: string) { // ... } markAsDone(item: Todo) { // ... } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 doneItems: Todo[]; export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 this.service.getData() .subscribe(data => this.items = data); export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 8 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 this.service.detDoneItems() .subscribe(data => this.doneItems = data); export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 11 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 addTodo(item: string) { // ... } export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 15 16 17 18 markAsDone(item: Todo) { 19 // ... 20 } 21 } 22 markAsDone(item: Todo) { // ... } export class ContentComponent implements OnInit { 1 private readonly service = inject(Service); 2 3 items: Todo[]; 4 doneItems: Todo[]; 5 6 ngOnInit() { 7 this.service.getData() 8 .subscribe(data => this.items = data); 9 10 this.service.detDoneItems() 11 .subscribe(data => this.doneItems = data); 12 } 13 14 addTodo(item: string) { 15 // ... 16 } 17 18 19 20 21 } 22
20. <div> <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <app-todo-list [items]="items" [doneItems]="doneItems" (markAsDone)="markAsDone($event)" ></app-todo-list> </div> 1 2 3 4 5 6 7 8 9 10 11
21. <div> <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <app-todo-list [items]="items" [doneItems]="doneItems" (markAsDone)="markAsDone($event)" ></app-todo-list> </div> 1 2 3 4 5 6 7 8 9 10 11 <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <div> 1 2 3 4 5 <app-todo-list 6 [items]="items" 7 [doneItems]="doneItems" 8 (markAsDone)="markAsDone($event)" 9 ></app-todo-list> 10 </div> 11
22. <div> <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <app-todo-list [items]="items" [doneItems]="doneItems" (markAsDone)="markAsDone($event)" ></app-todo-list> </div> 1 2 3 4 5 6 7 8 9 10 11 <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <div> 1 2 3 4 5 <app-todo-list 6 [items]="items" 7 [doneItems]="doneItems" 8 (markAsDone)="markAsDone($event)" 9 ></app-todo-list> 10 </div> 11 <app-todo-list [items]="items" [doneItems]="doneItems" (markAsDone)="markAsDone($event)" ></app-todo-list> <div> 1 <app-todo-form 2 (todoAdded)="addTodo($event)"> 3 </app-todo-form> 4 5 6 7 8 9 10 </div> 11
23. Component Component Component REST Component Component
24. S T A T E L E S S
25. Component Component Component REST Component Component
26. export class TodoListComponent { items = input<Todo[]>([]) doneItems = input<Todo[]>([]) markAsDone = output(); moveToDone(item: Todo) { this.markAsDone.emit(item); } } 1 2 3 4 5 6 7 8 9 10
27. export class TodoListComponent { items = input<Todo[]>([]) doneItems = input<Todo[]>([]) markAsDone = output(); moveToDone(item: Todo) { this.markAsDone.emit(item); } } 1 2 3 4 5 6 7 8 9 10 items = input<Todo[]>([]) doneItems = input<Todo[]>([]) export class TodoListComponent { 1 2 3 4 markAsDone = output(); 5 6 moveToDone(item: Todo) { 7 this.markAsDone.emit(item); 8 } 9 } 10
28. export class TodoListComponent { items = input<Todo[]>([]) doneItems = input<Todo[]>([]) markAsDone = output(); moveToDone(item: Todo) { this.markAsDone.emit(item); } } 1 2 3 4 5 6 7 8 9 10 items = input<Todo[]>([]) doneItems = input<Todo[]>([]) export class TodoListComponent { 1 2 3 4 markAsDone = output(); 5 6 moveToDone(item: Todo) { 7 this.markAsDone.emit(item); 8 } 9 } 10 markAsDone = output(); this.markAsDone.emit(item); export class TodoListComponent { 1 items = input<Todo[]>([]) 2 doneItems = input<Todo[]>([]) 3 4 5 6 moveToDone(item: Todo) { 7 8 } 9 } 10
29. Component Component Component REST Component Component
30. Component Component Component REST Component Component MULTIPLE TIMES
31. S I N G L E S O U R C E O F T R U T H
32. S T A T E
33. ARCHITECTURES WITH STORES & EFFECTS
34. Component REST Service
35. Component REST State ...
36. S T O R E
37. S T O R E V S S T A T E
38. S T O R E import { Component, OnInit } from '@angular/core'; import { Store } from '@ngrx/store'; @Component({ /*...*/ }) export class ContentComponent { private readonly service = inject(Service); } 1 2 3 4 5 6 7 8 9
39. S T O R E import { Component, OnInit } from '@angular/core'; import { Store } from '@ngrx/store'; @Component({ /*...*/ }) export class ContentComponent { private readonly service = inject(Service); } 1 2 3 4 5 6 7 8 9 import { Store } from '@ngrx/store'; private readonly service = inject(Service); import { Component, OnInit } from '@angular/core'; 1 2 3 @Component({ /*...*/ }) 4 export class ContentComponent { 5 6 7 8 } 9
40. Component Store
41. S T A T E
42. S T A T E
43. S T A T E
44. S T A T E
45. S T A T E
46. S T A T E
47. Component Store State
48. S T A T E import { Component, OnInit } from '@angular/core'; import { Store } from '@ngrx/store'; @Component({ /*...*/ }) export class ContentComponent { private readonly Store = inject(Store); items$ = this.store.select(state => state.items); loading$ = this.store.select(state => state.loading); } 1 2 3 4 5 6 7 8 9 10
49. S T A T E <div> <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <app-todo-list [items]="items$ | async" ... (markAsDone)="markAsDone($event)" ></app-todo-list> </div> 1 2 3 4 5 6 7 8 9 10 11
50. S T A T E <div> <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <app-todo-list [items]="items$ | async" ... (markAsDone)="markAsDone($event)" ></app-todo-list> </div> 1 2 3 4 5 6 7 8 9 10 11 [items]="items$ | async" <div> 1 <app-todo-form 2 (todoAdded)="addTodo($event)"> 3 </app-todo-form> 4 5 <app-todo-list 6 7 ... 8 (markAsDone)="markAsDone($event)" 9 ></app-todo-list> 10 </div> 11
51. STATE MANIPULATION?
52. A C T I O N S
53. A C T I O N S export const TodoActions = createActionGroup({ ... }); 1 2 3
54. A C T I O N S export const TodoActions = createActionGroup({ source: 'Todo', events: { // ... }, }); 1 2 3 4 5 6
55. A C T I O N S export const TodoActions = createActionGroup({ source: 'Todo', events: { 'Add Todo': props<{ value: string }>(), 'Add Todo Finished': props<{ todo: Todo }>(), 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), 'Delete Todo': props<{ todo: Todo }>(), 'Delete Todo Finished': props<{ todo: Todo }>(), }, }); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
56. A C T I O N S export const TodoActions = createActionGroup({ source: 'Todo', events: { 'Add Todo': props<{ value: string }>(), 'Add Todo Finished': props<{ todo: Todo }>(), 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), 'Delete Todo': props<{ todo: Todo }>(), 'Delete Todo Finished': props<{ todo: Todo }>(), }, }); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 'Add Todo': props<{ value: string }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16
57. A C T I O N S export const TodoActions = createActionGroup({ source: 'Todo', events: { 'Add Todo': props<{ value: string }>(), 'Add Todo Finished': props<{ todo: Todo }>(), 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), 'Delete Todo': props<{ todo: Todo }>(), 'Delete Todo Finished': props<{ todo: Todo }>(), }, }); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 'Add Todo': props<{ value: string }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Add Todo Finished': props<{ todo: Todo }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16
58. A C T I O N S export const TodoActions = createActionGroup({ source: 'Todo', events: { 'Add Todo': props<{ value: string }>(), 'Add Todo Finished': props<{ todo: Todo }>(), 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), 'Delete Todo': props<{ todo: Todo }>(), 'Delete Todo Finished': props<{ todo: Todo }>(), }, }); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 'Add Todo': props<{ value: string }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Add Todo Finished': props<{ todo: Todo }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 7 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16
59. A C T I O N S export const TodoActions = createActionGroup({ source: 'Todo', events: { 'Add Todo': props<{ value: string }>(), 'Add Todo Finished': props<{ todo: Todo }>(), 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), 'Delete Todo': props<{ todo: Todo }>(), 'Delete Todo Finished': props<{ todo: Todo }>(), }, }); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 'Add Todo': props<{ value: string }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Add Todo Finished': props<{ todo: Todo }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 7 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 10 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16
60. A C T I O N S export const TodoActions = createActionGroup({ source: 'Todo', events: { 'Add Todo': props<{ value: string }>(), 'Add Todo Finished': props<{ todo: Todo }>(), 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), 'Delete Todo': props<{ todo: Todo }>(), 'Delete Todo Finished': props<{ todo: Todo }>(), }, }); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 'Add Todo': props<{ value: string }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Add Todo Finished': props<{ todo: Todo }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 7 8 9 'Set As Done': props<{ todo: Todo }>(), 10 'Set As Done Finished': props<{ todo: Todo }>(), 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), export const TodoActions = createActionGroup({ 1 source: 'Todo', 2 events: { 3 'Add Todo': props<{ value: string }>(), 4 'Add Todo Finished': props<{ todo: Todo }>(), 5 6 'Load All Todos': emptyProps(), 7 'Load All Todos Finished': props<{ todos: Todo[] }>(), 8 9 10 11 12 'Delete Todo': props<{ todo: Todo }>(), 13 'Delete Todo Finished': props<{ todo: Todo }>(), 14 }, 15 }); 16 export const TodoActions = createActionGroup({ source: 'Todo', events: { 'Add Todo': props<{ value: string }>(), 'Add Todo Finished': props<{ todo: Todo }>(), 'Load All Todos': emptyProps(), 'Load All Todos Finished': props<{ todos: Todo[] }>(), 'Set As Done': props<{ todo: Todo }>(), 'Set As Done Finished': props<{ todo: Todo }>(), 'Delete Todo': props<{ todo: Todo }>(), 'Delete Todo Finished': props<{ todo: Todo }>(), }, }); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
61. A C T I O N S import { Component, OnInit } from '@angular/core'; import { Store } from '@ngrx/store'; import { TodoActions } from './todo.actions'; @Component({ /*...*/ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); this.items$ = this.store.select(state => state...); ngOnInit() { this.store.dispatch(TodoActions.loadAllTodos()); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14
62. R E D U C E R (oldState, action) => newState 1
63. R E D U C E R export interface TodoState { items: Todo[]; selectedItem: Todo; loading: boolean; } export const initialState: TodoState = { items: [], selectedItem: null, loading: false }; 1 2 3 4 5 6 7 8 9 10 11
64. R E D U C E R export interface TodoState { ... } export const initialState: TodoState = { ... }; const todoReducer = createReducer( initialState, on(TodoActions.loadAllTodos, (state) => ({ ...state, loading: true, }) ), ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14
65. Component Store State Reducer Actions
66. Component Store State Reducer Actions
67. Component Store State Reducer Actions
68. Component Store State Reducer Actions
69. Component Store State Reducer Actions
70. Component Store State Reducer Actions
71. CONTAINER store.select(...) store.dispatch(…)
72. CONTAINER store.select(...) store.dispatch(…) PRESENTATIONAL @Input(…) @Output(…)
73. S Y N C
74. S Y N C V S A S Y N C
75. E F F E C T S @Injectable() export class TodoEffects { } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
76. E F F E C T S @Injectable() export class TodoEffects { loadTodos$ = createEffect(() => ); } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
77. E F F E C T S @Injectable() export class TodoEffects { loadTodos$ = createEffect(() => this.actions$.pipe( ) ); } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
78. E F F E C T S @Injectable() export class TodoEffects { loadTodos$ = createEffect(() => this.actions$.pipe( ofType(todoActions.loadAllTodos), switchMap(() => ) ) ); } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
79. E F F E C T S @Injectable() export class TodoEffects { loadTodos$ = createEffect(() => this.actions$.pipe( ofType(todoActions.loadAllTodos), switchMap(() => this.todoService .getItems() ) ) ); } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
80. E F F E C T S @Injectable() export class TodoEffects { loadTodos$ = createEffect(() => this.actions$.pipe( ofType(todoActions.loadAllTodos), switchMap(() => this.todoService .getItems() .pipe( map((todos) => todoActions.loadAllTodosFinished({ payload: todos })) ) ) ) ); } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
81. E F F E C T S @Injectable() export class TodoEffects { loadTodos$ = createEffect(() => this.actions$.pipe( ofType(todoActions.loadAllTodos), switchMap(() => this.todoService .getItems() .pipe( map((todos) => todoActions.loadAllTodosFinished({ payload: todos })) ) ) ) ); } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 todoActions.loadAllTodosFinished({ payload: todos })) @Injectable() 1 export class TodoEffects { 2 loadTodos$ = createEffect(() => 3 this.actions$.pipe( 4 ofType(todoActions.loadAllTodos), 5 switchMap(() => 6 this.todoService 7 .getItems() 8 .pipe( 9 map((todos) => 10 11 ) 12 ) 13 ) 14 ); 15 } 16
82. const todoReducer = createReducer( initialState, on(TodoActions.loadAllTodos, (state) => ({ ...state, loading: true, }) ), on(TodoActions.loadAllTodosFinished, (state, { payload }) => { return { ...state, loading: false, items: [...payload], }; }), ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
83. const todoReducer = createReducer( initialState, on(TodoActions.loadAllTodos, (state) => ({ ...state, loading: true, }) ), on(TodoActions.loadAllTodosFinished, (state, { payload }) => { return { ...state, loading: false, items: [...payload], }; }), ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 on(TodoActions.loadAllTodosFinished, (state, { payload }) => { return { ...state, loading: false, items: [...payload], }; }), const todoReducer = createReducer( 1 initialState, 2 on(TodoActions.loadAllTodos, 3 (state) => ({ 4 ...state, 5 loading: true, 6 }) 7 ), 8 9 10 11 12 13 14 15 16 17 ); 18
84. Component Store State Reducer Actions
85. Component Store State Reducer Effects Actions
87. @Component({/* ... */ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.pipe(select(/*...*/)); ngOnInit() { this.store.dispatch(TodoActions.loadAllTodos()); } addTodo(item: string) { this.store.dispatch(TodoActions.addTodo({ payload: item })); } markAsDone(item: Todo) { this.store.dispatch(TodoActions.setAsDone({ payload: item })); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
88. @Component({/* ... */ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.pipe(select(/*...*/)); ngOnInit() { this.store.dispatch(TodoActions.loadAllTodos()); } addTodo(item: string) { this.store.dispatch(TodoActions.addTodo({ payload: item })); } markAsDone(item: Todo) { this.store.dispatch(TodoActions.setAsDone({ payload: item })); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 items$ = this.store.pipe(select(/*...*/)); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18
89. @Component({/* ... */ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.pipe(select(/*...*/)); ngOnInit() { this.store.dispatch(TodoActions.loadAllTodos()); } addTodo(item: string) { this.store.dispatch(TodoActions.addTodo({ payload: item })); } markAsDone(item: Todo) { this.store.dispatch(TodoActions.setAsDone({ payload: item })); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 items$ = this.store.pipe(select(/*...*/)); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 this.store.dispatch(TodoActions.loadAllTodos()); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18
90. @Component({/* ... */ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.pipe(select(/*...*/)); ngOnInit() { this.store.dispatch(TodoActions.loadAllTodos()); } addTodo(item: string) { this.store.dispatch(TodoActions.addTodo({ payload: item })); } markAsDone(item: Todo) { this.store.dispatch(TodoActions.setAsDone({ payload: item })); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 items$ = this.store.pipe(select(/*...*/)); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 this.store.dispatch(TodoActions.loadAllTodos()); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 } @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18
91. @Component({/* ... */ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.pipe(select(/*...*/)); ngOnInit() { this.store.dispatch(TodoActions.loadAllTodos()); } addTodo(item: string) { this.store.dispatch(TodoActions.addTodo({ payload: item })); } markAsDone(item: Todo) { this.store.dispatch(TodoActions.setAsDone({ payload: item })); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 items$ = this.store.pipe(select(/*...*/)); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 this.store.dispatch(TodoActions.loadAllTodos()); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 } @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 this.store.dispatch(TodoActions.addTodo({ payload: item })); } @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 12 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18
92. @Component({/* ... */ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.pipe(select(/*...*/)); ngOnInit() { this.store.dispatch(TodoActions.loadAllTodos()); } addTodo(item: string) { this.store.dispatch(TodoActions.addTodo({ payload: item })); } markAsDone(item: Todo) { this.store.dispatch(TodoActions.setAsDone({ payload: item })); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 items$ = this.store.pipe(select(/*...*/)); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 this.store.dispatch(TodoActions.loadAllTodos()); @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 } @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 this.store.dispatch(TodoActions.addTodo({ payload: item })); } @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 12 13 14 markAsDone(item: Todo) { 15 this.store.dispatch(TodoActions.setAsDone({ payload: item })); 16 } 17 } 18 this.store.dispatch(TodoActions.setAsDone({ payload: item })); } } @Component({/* ... */ }) 1 export class ContentComponent implements OnInit { 2 private readonly store = inject(Store); 3 4 items$ = this.store.pipe(select(/*...*/)); 5 6 ngOnInit() { 7 this.store.dispatch(TodoActions.loadAllTodos()); 8 } 9 10 addTodo(item: string) { 11 this.store.dispatch(TodoActions.addTodo({ payload: item })); 12 } 13 14 markAsDone(item: Todo) { 15 16 17 18
93. <h1>Todo App</h1> <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <app-todo-list [items]="items$ | async" (markAsDone)="markAsDone($event)" ></app-todo-list> 1 2 3 4 5 6 7 8 9
94. <h1>Todo App</h1> <app-todo-form (todoAdded)="addTodo($event)"> </app-todo-form> <app-todo-list [items]="items$ | async" (markAsDone)="markAsDone($event)" ></app-todo-list> 1 2 3 4 5 6 7 8 9 [items]="items$ | async" <h1>Todo App</h1> 1 2 <app-todo-form (todoAdded)="addTodo($event)"> 3 </app-todo-form> 4 5 <app-todo-list 6 7 (markAsDone)="markAsDone($event)" 8 ></app-todo-list> 9
95. export const appConfig = { providers: [ provideRouter(APP_ROUTES), provideHttpClient(), importProvidersFrom( StoreModule.forRoot({}), EffectsModule.forRoot([]) ), ], }; 1 2 3 4 5 6 7 8 9 10
96. export const appConfig = { providers: [ provideRouter(APP_ROUTES), provideHttpClient(), importProvidersFrom( StoreModule.forRoot({}), EffectsModule.forRoot([]) ), ], }; 1 2 3 4 5 6 7 8 9 10 importProvidersFrom( StoreModule.forRoot({}), EffectsModule.forRoot([]) ), export const appConfig = { 1 providers: [ 2 provideRouter(APP_ROUTES), 3 provideHttpClient(), 4 5 6 7 8 ], 9 }; 10
97. export const appConfig = { providers: [ provideRouter(APP_ROUTES), provideHttpClient(), importProvidersFrom( StoreModule.forRoot({}), EffectsModule.forRoot([]) ), ], }; 1 2 3 4 5 6 7 8 9 10 { } 1 2 3
98. export const appConfig = { providers: [ provideRouter(APP_ROUTES), provideHttpClient(), importProvidersFrom( StoreModule.forRoot({}), EffectsModule.forRoot([]) ), ], }; 1 2 3 4 5 6 7 8 9 10 importProvidersFrom( StoreModule.forRoot({}), EffectsModule.forRoot([]) ), export const appConfig = { 1 providers: [ 2 provideRouter(APP_ROUTES), 3 provideHttpClient(), 4 5 6 7 8 ], 9 }; 10 { } 1 2 3
99. export const TODO_ROUTES: Routes = [ { path: '', component: TodoMainComponent, providers: [ importProvidersFrom( StoreModule.forFeature("todo", todoReducer), EffectsModule.forFeature([TodoEffects]) ), ], }, ]; 1 2 3 4 5 6 7 8 9 10 11 12 { todo: { // ... } } 1 2 3 4 5
100. export const TODO_ROUTES: Routes = [ { path: '', component: TodoMainComponent, providers: [ importProvidersFrom( StoreModule.forFeature("todo", todoReducer), EffectsModule.forFeature([TodoEffects]) ), ], }, ]; 1 2 3 4 5 6 7 8 9 10 11 12 { todo: { // ... } } 1 2 3 4 5
101. { todo: { items: [], selectedItem: null, loading: false } } 1 2 3 4 5 6 7 export const TODO_ROUTES: Routes = [ { path: '', component: TodoMainComponent, providers: [ importProvidersFrom( StoreModule.forFeature("todo", todoReducer), EffectsModule.forFeature([TodoEffects]) ), ], }, ]; 1 2 3 4 5 6 7 8 9 10 11 12
102. { todo: { items: [], selectedItem: null, loading: false } } 1 2 3 4 5 6 7 export const TODO_ROUTES: Routes = [ { path: '', component: TodoMainComponent, providers: [ importProvidersFrom( StoreModule.forFeature("todo", todoReducer), EffectsModule.forFeature([TodoEffects]) ), ], }, ]; 1 2 3 4 5 6 7 8 9 10 11 12
103. SELECTORS import { Component, OnInit } from '@angular/core'; import { Store } from '@ngrx/store'; @Component({ /*...*/ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); ngOnInit() { const items$ = this.store.pipe( select((state) => state ) ); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
104. SELECTORS const items$ = this.store.pipe( select((state) => state.todo )) ); import { Component, OnInit } from '@angular/core'; 1 import { Store } from '@ngrx/store'; 2 3 @Component({ /*...*/ }) 4 export class ContentComponent implements OnInit { 5 private readonly store = inject(Store); 6 7 ngOnInit() { 8 9 10 11 12 13 14 15 } 16 } 17
105. SELECTORS const items$ = this.store.pipe( select((state) => state.todo.items )) ); import { Component, OnInit } from '@angular/core'; 1 import { Store } from '@ngrx/store'; 2 3 @Component({ /*...*/ }) 4 export class ContentComponent implements OnInit { 5 private readonly store = inject(Store); 6 7 ngOnInit() { 8 9 10 11 12 13 14 15 } 16 } 17
106. SELECTORS const items$ = this.store.pipe( select((state) => state.todo.items.filter((x) => !x.done)) ); import { Component, OnInit } from '@angular/core'; 1 import { Store } from '@ngrx/store'; 2 3 @Component({ /*...*/ }) 4 export class ContentComponent implements OnInit { 5 private readonly store = inject(Store); 6 7 ngOnInit() { 8 9 10 11 12 13 14 15 } 16 } 17
107. SELECTORS const items$ = this.store.pipe( select((state) => state.todo.items.filter((x) => !x.done)) ); import { Component, OnInit } from '@angular/core'; 1 import { Store } from '@ngrx/store'; 2 3 @Component({ /*...*/ }) 4 export class ContentComponent implements OnInit { 5 private readonly store = inject(Store); 6 7 ngOnInit() { 8 9 10 11 12 13 14 15 } 16 } 17 import { Component, OnInit } from '@angular/core'; import { Store } from '@ngrx/store'; @Component({ /*...*/ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); ngOnInit() { const items$ = this.store.pipe( select((state) => state.todo.items.filter((x) => !x.done)) ); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
108. SELECTORS import { Component, OnInit } from '@angular/core'; import { Store } from '@ngrx/store'; @Component({ /*...*/ }) export class ContentComponent implements OnInit { private readonly store = inject(Store); ngOnInit() { const items$ = this.store.pipe( select((state) => state.todo.items.filter((x) => !x.done)) ); const doneItems$ = this.store.pipe( select((state) => state.todo.items.filter((x) => x.done)) ); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
109. SELECTORS export const getTodoState = createFeatureSelector<TodoState>("todo"); export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getAllDoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => x.done) ); export const getSelectedItem = createSelector( getTodoState, (state: TodoState) => state.selectedItem ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
110. SELECTORS export const getTodoState = createFeatureSelector<TodoState>("todo"); export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getAllDoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => x.done) ); export const getSelectedItem = createSelector( getTodoState, (state: TodoState) => state.selectedItem ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 export const getAllUndoneItems = createSelector( 3 getTodoState, 4 (state: TodoState) => state.items.filter((x) => !x.done) 5 ); 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16
111. SELECTORS export const getTodoState = createFeatureSelector<TodoState>("todo"); export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getAllDoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => x.done) ); export const getSelectedItem = createSelector( getTodoState, (state: TodoState) => state.selectedItem ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 export const getAllUndoneItems = createSelector( 3 getTodoState, 4 (state: TodoState) => state.items.filter((x) => !x.done) 5 ); 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16 export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 3 4 5 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16
112. SELECTORS export const getTodoState = createFeatureSelector<TodoState>("todo"); export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getAllDoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => x.done) ); export const getSelectedItem = createSelector( getTodoState, (state: TodoState) => state.selectedItem ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 export const getAllUndoneItems = createSelector( 3 getTodoState, 4 (state: TodoState) => state.items.filter((x) => !x.done) 5 ); 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16 export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 3 4 5 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16 export const getAllDoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => x.done) ); export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 export const getAllUndoneItems = createSelector( 3 getTodoState, 4 (state: TodoState) => state.items.filter((x) => !x.done) 5 ); 6 7 8 9 10 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16
113. SELECTORS export const getTodoState = createFeatureSelector<TodoState>("todo"); export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getAllDoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => x.done) ); export const getSelectedItem = createSelector( getTodoState, (state: TodoState) => state.selectedItem ); 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 export const getAllUndoneItems = createSelector( 3 getTodoState, 4 (state: TodoState) => state.items.filter((x) => !x.done) 5 ); 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16 export const getAllUndoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => !x.done) ); export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 3 4 5 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16 export const getAllDoneItems = createSelector( getTodoState, (state: TodoState) => state.items.filter((x) => x.done) ); export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 export const getAllUndoneItems = createSelector( 3 getTodoState, 4 (state: TodoState) => state.items.filter((x) => !x.done) 5 ); 6 7 8 9 10 11 12 export const getSelectedItem = createSelector( 13 getTodoState, 14 (state: TodoState) => state.selectedItem 15 ); 16 export const getSelectedItem = createSelector( getTodoState, (state: TodoState) => state.selectedItem ); export const getTodoState = createFeatureSelector<TodoState>("todo"); 1 2 export const getAllUndoneItems = createSelector( 3 getTodoState, 4 (state: TodoState) => state.items.filter((x) => !x.done) 5 ); 6 7 export const getAllDoneItems = createSelector( 8 getTodoState, 9 (state: TodoState) => state.items.filter((x) => x.done) 10 ); 11 12 13 14 15 16
114. SELECTORS export class ContentComponent implements OnInit { private readonly service = inject(Service); items: Todo[]; doneItems: Todo[]; ngOnInit() { this.service.getData() .subscribe((data) => { this.items = data }); this.service.detDoneItems() .subscribe((data) => { this.items = data }); } } 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
115. SELECTORS export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.select(getAllUndoneItems); doneItems$ = this.store.select(getAllDoneItems); ngOnInit() { this.store.dispatch(todoActions.loadAllTodos()); } } 1 2 3 4 5 6 7 8 9 10
116. SELECTORS export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.select(getAllUndoneItems); doneItems$ = this.store.select(getAllDoneItems); ngOnInit() { this.store.dispatch(todoActions.loadAllTodos()); } } 1 2 3 4 5 6 7 8 9 10 items$ = this.store.select(getAllUndoneItems); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 4 doneItems$ = this.store.select(getAllDoneItems); 5 6 ngOnInit() { 7 this.store.dispatch(todoActions.loadAllTodos()); 8 } 9 } 10
117. SELECTORS export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.select(getAllUndoneItems); doneItems$ = this.store.select(getAllDoneItems); ngOnInit() { this.store.dispatch(todoActions.loadAllTodos()); } } 1 2 3 4 5 6 7 8 9 10 items$ = this.store.select(getAllUndoneItems); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 4 doneItems$ = this.store.select(getAllDoneItems); 5 6 ngOnInit() { 7 this.store.dispatch(todoActions.loadAllTodos()); 8 } 9 } 10 doneItems$ = this.store.select(getAllDoneItems); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 items$ = this.store.select(getAllUndoneItems); 4 5 6 ngOnInit() { 7 this.store.dispatch(todoActions.loadAllTodos()); 8 } 9 } 10
118. SELECTORS export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.select(getAllUndoneItems); doneItems$ = this.store.select(getAllDoneItems); ngOnInit() { this.store.dispatch(todoActions.loadAllTodos()); } } 1 2 3 4 5 6 7 8 9 10 items$ = this.store.select(getAllUndoneItems); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 4 doneItems$ = this.store.select(getAllDoneItems); 5 6 ngOnInit() { 7 this.store.dispatch(todoActions.loadAllTodos()); 8 } 9 } 10 doneItems$ = this.store.select(getAllDoneItems); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 items$ = this.store.select(getAllUndoneItems); 4 5 6 ngOnInit() { 7 this.store.dispatch(todoActions.loadAllTodos()); 8 } 9 } 10 this.store.dispatch(todoActions.loadAllTodos()); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 items$ = this.store.select(getAllUndoneItems); 4 doneItems$ = this.store.select(getAllDoneItems); 5 6 ngOnInit() { 7 8 } 9 } 10
119. SELECTORS export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.select(getAllUndoneItems); doneItems$ = this.store.select(getAllDoneItems); ngOnInit() { this.store.dispatch(todoActions.loadAllTodos()); } } 1 2 3 4 5 6 7 8 9 10 items$ = this.store.select(getAllUndoneItems); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 4 doneItems$ = this.store.select(getAllDoneItems); 5 6 ngOnInit() { 7 this.store.dispatch(todoActions.loadAllTodos()); 8 } 9 } 10 doneItems$ = this.store.select(getAllDoneItems); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 items$ = this.store.select(getAllUndoneItems); 4 5 6 ngOnInit() { 7 this.store.dispatch(todoActions.loadAllTodos()); 8 } 9 } 10 this.store.dispatch(todoActions.loadAllTodos()); export class ContentComponent implements OnInit { 1 private readonly store = inject(Store); 2 3 items$ = this.store.select(getAllUndoneItems); 4 doneItems$ = this.store.select(getAllDoneItems); 5 6 ngOnInit() { 7 8 } 9 } 10 export class ContentComponent implements OnInit { private readonly store = inject(Store); items$ = this.store.select(getAllUndoneItems); doneItems$ = this.store.select(getAllDoneItems); ngOnInit() { this.store.dispatch(todoActions.loadAllTodos()); } } 1 2 3 4 5 6 7 8 9 10
120. TAKE CARE