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https://github.com/fredericheem/redux-act-async
Reduce boilerplate for redux async actions and reducers
https://github.com/fredericheem/redux-act-async
async redux
Last synced: about 1 month ago
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Reduce boilerplate for redux async actions and reducers
- Host: GitHub
- URL: https://github.com/fredericheem/redux-act-async
- Owner: FredericHeem
- License: apache-2.0
- Created: 2016-02-25T17:12:44.000Z (almost 9 years ago)
- Default Branch: master
- Last Pushed: 2019-09-01T20:54:06.000Z (over 5 years ago)
- Last Synced: 2024-11-09T18:48:52.496Z (about 2 months ago)
- Topics: async, redux
- Language: JavaScript
- Homepage:
- Size: 153 KB
- Stars: 125
- Watchers: 6
- Forks: 22
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
README
# redux-act-async
Create async actions and reducers based on [redux-act](https://github.com/pauldijou/redux-act)
## Install
```bash
npm install redux-act-async --save
```
## Badges
[](https://travis-ci.org/FredericHeem/redux-act-async)
[](https://codecov.io/gh/FredericHeem/redux-act-async)
[](https://badge.fury.io/js/redux-act-async)
## Usage
```js
import thunk from 'redux-thunk'
import {createStore, applyMiddleware} from 'redux';
import {createActionAsync, createReducerAsync} from 'redux-act-async';
// The async api to call, must be a function that returns a promise
let user = {id: 8};
function apiOk(){
return Promise.resolve(user);
}
// createActionAsync will create 4 synchronous action creators:
// login.request, login.ok, login.error and login.reset
const login = createActionAsync('LOGIN', apiOk);
/*
createReducerAsync takes an async action created by createActionAsync.
It reduces the following state given the four actions: request, ok, error and reset.
const defaultsState = {
loading: false,
request: null,
data: null,
error: null
};
if you need to overwrite the defaultsState just insert your initialState as a second paramenter in the createReducerAsync function. Just like that:
const initialState = {
loading: false,
request: null,
data: {custom: "intitial data"},
error: null
};
const reducer = createReducerAsync(login, initialState)
*/
const reducer = createReducerAsync(login)
const store = createStore(reducer, applyMiddleware(thunk));
await store.dispatch(login({username:'lolo', password: 'password'}));
```
## Legacy redux
In a nutshell, the following code:
```js
const options = {noRethrow: false};
const loginAction = createActionAsync('LOGIN', api, options);
const loginReducer = createReducerAsync(loginAction)
```
is equivalent to:
```js
const LOGIN_REQUEST = 'LOGIN_REQUEST'
const LOGIN_OK = 'LOGIN_OK'
const LOGIN_ERROR = 'LOGIN_ERROR'
const LOGIN_RESET = 'LOGIN_RESET'
const loginRequest = (value) => ({
type: LOGIN_REQUEST,
payload: value
})
const loginOk = (value) => ({
type: LOGIN_OK,
payload: value
})
const loginError = (value) => ({
type: LOGIN_ERROR,
payload: value
})
const loginReset = (value) => ({
type: LOGIN_RESET,
payload: value
})
const options = {noRethrow: true};
export const login = (...args) => {
return (dispatch, getState) => {
dispatch(loginRequest(...args));
return api(...args, dispatch, getState)
.then(response => {
const out = {
request: args,
response: response
}
dispatch(loginOk(out))
return out;
})
.catch(error => {
const errorOut = {
actionAsync,
request: args,
error: error
}
dispatch(loginError(errorOut))
if(!options.noRethrow) throw errorOut;
})
}
}
const defaultsState = {
loading: false,
request: null,
data: null,
error: null
};
const reducer = createReducer({
[actionAsync.request]: (state, payload) => ({
...state,
request: payload,
loading: true,
data: null,
error: null
}),
[actionAsync.ok]: (state, payload) => ({
...state,
loading: false,
data: payload.response
}),
[actionAsync.error]: (state, payload) => ({
...state,
loading: false,
error: payload.error
}),
[actionAsync.reset]: () => (defaultsState)
} , defaultsState);
```
That's 3 lines against 78 lines, a good way to reduce boilerplate code.
## Async Action Options
Here are all the options to configure an asynchronous action:
```javascript
const actionOptions = {
noRethrow: false,
request:{
callback: (dispatch, getState, ...args) => {
},
payloadReducer: (payload) => {
return payload
},
metaReducer: (meta) => {
return ASYNC_META.REQUEST
}
},
ok:{
callback: (dispatch, getState, ...args) => {
},
payloadReducer: (payload) => {
return payload
},
metaReducer: () => {
return ASYNC_META.OK
}
},
error:{
callback: (dispatch, getState, ...args) => {
},
payloadReducer: (payload) => {
return payload
},
metaReducer: () => {
return ASYNC_META.ERROR
}
}
}
const loginAction = createActionAsync('LOGIN', api, actionOptions);
```
## Who is using this library ?
This library has been extracted originally from [starhack.it](https://github.com/FredericHeem/starhackit), a React/Node Full Stack Starter Kit.