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Error handling in redux with sagas
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| import { | |
| SHOULD_ASK_BACKEND_SOMETHING, | |
| DID_ASK_BACKEND_SOMETHING, | |
| DID_FAIL_TO_ASK_BACKEND_SOMETHING, | |
| } from './constants'; | |
| export const shouldAskBackendSomething = (payload) => ({ | |
| type: SHOULD_ASK_BACKEND_SOMETHING, | |
| payload, | |
| }); | |
| export const didAskBackendSomething = (payload) => ({ | |
| type: DID_ASK_BACKEND_SOMETHING, | |
| payload, | |
| }); | |
| export const didFailToAskBackendSomething = (payload) => ({ | |
| type: DID_FAIL_TO_ASK_BACKEND_SOMETHING, | |
| payload, | |
| }); |
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| export const SHOULD_ASK_BACKEND_SOMETHING = 'app/SHOULD_ASK_BACKEND_SOMETHING'; | |
| export const DID_ASK_BACKEND_SOMETHING = 'app/DID_ASK_BACKEND_SOMETHING'; | |
| export const DID_FAIL_TO_ASK_BACKEND_SOMETHING = 'app/DID_FAIL_TO_ASK_BACKEND_SOMETHING'; |
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| import { | |
| SHOULD_ASK_BACKEND_SOMETHING, | |
| DID_ASK_BACKEND_SOMETHING, | |
| DID_FAIL_TO_ASK_BACKEND_SOMETHING, | |
| } from './constants'; | |
| export default (state, action) => { | |
| switch (action.type) { | |
| case SHOULD_ASK_BACKEND_SOMETHING: | |
| return state | |
| .set('loading', true); | |
| case DID_ASK_BACKEND_SOMETHING: | |
| return state | |
| .set('loading', false) | |
| .set('result', action.payload); | |
| case DID_FAIL_TO_ASK_BACKEND_SOMETHING: | |
| return state | |
| .set('errorOverlayVisible', true) | |
| .set('loading', false) | |
| .set('error', action.payload); | |
| default: | |
| return state; | |
| } | |
| } |
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| import { | |
| SHOULD_ASK_BACKEND_SOMETHING, | |
| } from './constants'; | |
| import { | |
| backendOperation, | |
| } from 'mySuperBackendService'; | |
| import { | |
| didAskBackendSomething, | |
| didFailToAskBackendSomething, | |
| } from './actions'; | |
| function* shouldAskBackendSomethingHandler(action) { | |
| try { | |
| const { | |
| payload: { | |
| ...params | |
| } | |
| } = action; | |
| const result = yield call([backendOperation, backendOperation.post], params); | |
| yield put(didAskBackendSomething, result); | |
| } catch (err) { | |
| /* Do error handling which isn't relevant for the state here */ | |
| yield put(didFailToAskBackendSomething, err); | |
| } | |
| } | |
| export function* shouldAskBackendSomethingSaga() { | |
| yield takeEvery(SHOULD_ASK_BACKEND_SOMETHING, shouldAskBackendSomethingHandler); | |
| } |
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