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angular 2 with sagas and reducers
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| System.config({ | |
| //use typescript for compilation | |
| transpiler: 'typescript', | |
| //typescript compiler options | |
| typescriptOptions: { | |
| emitDecoratorMetadata: true | |
| }, | |
| //map tells the System loader where to look for things | |
| map: { | |
| app: "./src", | |
| '@ngrx': 'https://npmcdn.com/@ngrx', | |
| 'store-saga': 'https://npmcdn.com/[email protected]', | |
| 'rxjs': 'https://npmcdn.com/[email protected]' | |
| }, | |
| //packages defines our app package | |
| packages: { | |
| app: { | |
| main: './main.ts', | |
| defaultExtension: 'ts' | |
| }, | |
| '@ngrx/store': { | |
| main: 'dist/index.js', | |
| defaultExtension: 'js' | |
| }, | |
| '@ngrx/devtools': { | |
| main: 'dist/index.js', | |
| defaultExtension: 'js' | |
| }, | |
| 'store-saga': { | |
| main: 'index.js', | |
| defaultExtension: 'js' | |
| }, | |
| 'rxjs': { | |
| main: 'index.js', | |
| defaultExtension: 'js' | |
| } | |
| } | |
| }); |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>angular2 playground</title> | |
| <script src="https://code.angularjs.org/2.0.0-beta.9/angular2-polyfills.js"></script> | |
| <script src="https://code.angularjs.org/tools/system.js"></script> | |
| <script src="https://code.angularjs.org/tools/typescript.js"></script> | |
| <script src="config.js"></script> | |
| <script src="https://code.angularjs.org/2.0.0-beta.9/angular2.dev.js"></script> | |
| <script src="https://code.angularjs.org/2.0.0-beta.9/http.dev.js"></script> | |
| <script src="https://code.angularjs.org/2.0.0-beta.9/router.dev.js"></script> | |
| <script> | |
| System.import('app') | |
| .catch(console.error.bind(console)); | |
| </script> | |
| </head> | |
| <body> | |
| <app></app> | |
| </body> | |
| </html> |
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| import 'rxjs/Rx'; | |
| import {HTTP_PROVIDERS, Http} from 'angular2/http'; | |
| import {Component} from 'angular2/core'; | |
| import {bootstrap} from 'angular2/platform/browser'; | |
| import {Observable} from 'rxjs/Rx'; | |
| import {installSagaMiddleware, createSaga, whenAction} from 'store-saga'; | |
| import {provideStore} from '@ngrx/store'; | |
| import {Store} from '@ngrx/store/dist/store'; | |
| const LOAD = 'LOAD'; | |
| const LOADED = 'LOADED'; | |
| @Component({ | |
| selector: 'app', | |
| template: `<div> | |
| <button (click)="load('rxjs')">RxJS</button> | |
| <button (click)="load('angular')">Angular</button> | |
| Custom search: <input #i type="text" (keyup.enter)="load(i.value)"> | |
| <button (click)="load(i.value)">Custom</button> | |
| <ul *ngFor="#item of (results | async)"> | |
| {{item.title}} | |
| </ul> | |
| </div>` | |
| }) | |
| export class App { | |
| results = this.store.select('questions'); | |
| load(payload){ | |
| this.store.dispatch({type: LOAD, payload}); | |
| }; | |
| constructor(private store:Store) {} | |
| } | |
| //reducers | |
| const questions = (state = [], {type, payload})=> { | |
| switch (type) { | |
| case LOADED: | |
| return payload.items; | |
| default: | |
| return state; | |
| } | |
| }; | |
| //sagas | |
| const load = createSaga((http:Http)=> { | |
| const url$ = Observable.of('https://api.stackexchange.com/2.2/search?site=stackoverflow'); | |
| return saga$ => saga$ | |
| .filter(whenAction(LOAD)) | |
| .combineLatest(url$, ({action:{payload}}, url)=> `${url}&intitle=${payload}`) | |
| .switchMap(url => http.get(url)) | |
| .map(res => ({ | |
| type: LOADED, | |
| payload: res.json() | |
| }) | |
| ) | |
| }, [Http]); | |
| bootstrap(App, [ | |
| HTTP_PROVIDERS, | |
| provideStore({questions}), | |
| installSagaMiddleware(load) | |
| ]); | |
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