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Implementing simple scenario using redux-side-effects, as a example for discussion https://github.com/rackt/redux/issues/291#issuecomment-167128155
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import {createStore, applyMiddleware} from 'redux'; | |
import {createEffectCapableStore} from 'redux-side-effects'; | |
import createLogger from 'redux-logger'; | |
import userRegistration, {START_COUNTRY_SELECTION} from './userRegistration'; | |
import {CHANGE_SELECTION, CONFIRM_SELECTION} from './countrySelection'; | |
const storeFactory = createEffectCapableStore(applyMiddleware(createLogger())(createStore)); | |
const store = storeFactory(userRegistration); | |
// scenario that should select a country for a user | |
store.dispatch({ type: START_COUNTRY_SELECTION }); | |
store.dispatch({ type: CHANGE_SELECTION, payload: 1 }); | |
store.dispatch({ type: CONFIRM_SELECTION }); | |
// expected state: | |
// { | |
// "user": { | |
// "countryId": 1 | |
// }, | |
// "countrySelection": null | |
// } | |
/* | |
// scenario that should raise a warning based on state in countrySelection slice | |
store.dispatch({ type: START_COUNTRY_SELECTION }); | |
store.dispatch({ type: CONFIRM_SELECTION }); | |
// expected state: | |
// { | |
// "user": { | |
// }, | |
// "countrySelection": { | |
// "selectedCountryId": null, | |
// "showNoSelectionWarning": true | |
// } | |
// } | |
*/ |
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import {COUNTRY_SELECTION_SUCCESS} from './globalActions.js'; | |
export const CHANGE_SELECTION = 'country-selection/CHANGE_SELECTION'; | |
export const CONFIRM_SELECTION = 'country-selection/CONFIRM_SELECTION'; | |
export default function *countrySelection(state = { selectedCountryId: null, showNoSelectionWarning: false }, action = {}) { | |
switch (action.type) { | |
case CHANGE_SELECTION: | |
return { | |
...state, | |
selectedCountryId: action.payload | |
}; | |
case CONFIRM_SELECTION: | |
if (state.selectedCountryId == null) return {...state, showNoSelectionWarning: true}; | |
yield dispatch => dispatch({type: COUNTRY_SELECTION_SUCCESS, payload: state.selectedCountryId}); | |
return state; | |
default: | |
return state; | |
} | |
} |
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export const COUNTRY_SELECTION_SUCCESS = 'COUNTRY_SELECTION_SUCCESS'; |
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import {COUNTRY_SELECTION_SUCCESS} from './globalActions.js'; | |
import countrySelection from './countrySelection'; | |
export const START_COUNTRY_SELECTION = 'user-registration/START_COUNTRY_SELECTION'; | |
export default function *userRegistration(state = { user: {}, countrySelection: null }, action = {}) { | |
switch (action.type) { | |
case START_COUNTRY_SELECTION: | |
return { | |
...state, | |
countrySelection: yield* countrySelection(undefined, action) | |
}; | |
case COUNTRY_SELECTION_SUCCESS: | |
return { | |
...state, | |
countrySelection: null, | |
user: { | |
...state.user, | |
countryId: action.payload | |
} | |
}; | |
default: | |
return { | |
...state, | |
countrySelection: state.countrySelection && (yield* countrySelection(state.countrySelection, action)) | |
}; | |
} | |
} |
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