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April 28, 2017 06:49
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Simplified redux-query reducer with error handling
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| import { getQueryByUrl } from './reducers/queries' | |
| import { getPageByPath } from './reducers/pages' | |
| const Page = ({ loading = true, error, page }) => { | |
| if (loading) { | |
| return <Loader /> | |
| } | |
| if (error) { | |
| return <Error error={error} /> | |
| } | |
| if (!page) { | |
| return <NotFound /> | |
| } | |
| return ( | |
| <div> | |
| {page.title} | |
| </div> | |
| ) | |
| } | |
| export default compose( | |
| connect( | |
| (state, { path }) => ({ | |
| ...getQueryByUrl(state, getPageUrl({ path })), | |
| page: getPageByPath(state, path), | |
| }), | |
| ) | |
| )(Page) |
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| import { actionTypes, reconcileQueryKey } from 'redux-query' | |
| export const getQueries = state => state.queries || {} | |
| export const getQueryByKey = (state, queryKey) => { | |
| const queries = getQueries(state) | |
| return queries[queryKey] | |
| } | |
| export const getQueryByParams = (state, params) => ( | |
| getQueryByKey(state, reconcileQueryKey(params)) | |
| ) | |
| export const getQueryByUrl = (state, url) => ( | |
| getQueryByParams(state, { url }) | |
| ) | |
| const updateQuery = (state = {}, action) => { | |
| switch (action.type) { | |
| case actionTypes.MUTATE_START: | |
| case actionTypes.REQUEST_START: | |
| return { | |
| loading: true, | |
| } | |
| case actionTypes.MUTATE_SUCCESS: | |
| case actionTypes.REQUEST_SUCCESS: | |
| return { | |
| ...state, | |
| loading: false, | |
| completed: true, | |
| } | |
| case actionTypes.MUTATE_FAILURE: | |
| case actionTypes.REQUEST_FAILURE: | |
| return { | |
| ...state, | |
| loading: false, | |
| completed: true, | |
| error: action.responseBody, | |
| } | |
| case actionTypes.CANCEL_QUERY: | |
| if (state.isPending) { | |
| return { | |
| ...state, | |
| loading: false, | |
| completed: true, | |
| } | |
| } | |
| return state | |
| default: | |
| return state | |
| } | |
| } | |
| const queriesReducer = (state = {}, action) => { | |
| switch (action.type) { | |
| case actionTypes.MUTATE_START: | |
| case actionTypes.REQUEST_START: | |
| case actionTypes.REQUEST_SUCCESS: | |
| case actionTypes.MUTATE_FAILURE: | |
| case actionTypes.MUTATE_SUCCESS: | |
| case actionTypes.REQUEST_FAILURE: | |
| return { | |
| ...state, | |
| [action.queryKey]: updateQuery(state[action.queryKey], action), | |
| } | |
| case actionTypes.RESET: | |
| return {} | |
| default: { | |
| return state | |
| } | |
| } | |
| } | |
| export default queriesReducer |
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