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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/store-saga@1.0.0-beta.4', | |
'rxjs': 'https://npmcdn.com/rxjs@5.0.0-beta.2' | |
}, | |
//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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