Reid  Rohan

Reid Rohan

1650267840

Redux-batched-actions: Redux Higher Order Reducer + Action

redux-batched-actions

Batching action creator and associated higher order reducer for redux that enables batching subscriber notifications for an array of actions.

npm install --save redux-batched-actions

Usage

import {createStore, applyMiddleware} from 'redux';
import {batchActions, enableBatching, batchDispatchMiddleware} from 'redux-batched-actions';
import {createAction} from 'redux-actions';

const doThing = createAction('DO_THING')
const doOther = createAction('DO_OTHER')

function reducer(state, action) {
    switch (action.type) {
        case 'DO_THING': return 'thing'
        case 'DO_OTHER': return 'other'
        default: return state
    }
}

// Handle bundled actions in reducer
const store = createStore(enableBatching(reducer), initialState)

store.dispatch(batchActions([doThing(), doOther()]))
// OR
store.dispatch(batchActions([doThing(), doOther()], 'DO_BOTH'))

Recipes

Async

Usage for action creators that return objects is trivial, but it also works well with thunks to perform large reductions on multiple asynchronous actions, or actions that rely on external services. For example:

const setLoading = createAction('SET_LOADING')
const setUser = createAction('SET_USER')
const unsetLoading = createAction('UNSET_LOADING')

function login(credentials) {
    return function(dispatch) {
        dispatch(setLoading());

        authenticate(credentials)
            .then(user => {
                dispatch(batchActions([
                    setUser(user),
                    unsetLoading()
                ], 'LOGIN_SUCCESS'))
            })
        })
    }
}

In this example, the subscribers would be notified twice: once when the state is loading, and then again once the user has been loaded.

Middleware integration

You can add a middleware to dispatch each of the bundled actions. This can be used if other middlewares are listening for one of the bundled actions to be dispatched.

const store = createStore(
        reducer,
        initialState,
        applyMiddleware(batchDispatchMiddleware)
)

Note that batchDispatchMiddleware and enableBatching should not be used together as batchDispatchMiddleware calls next on the action it receives, whilst also dispatching each of the bundled actions.

Thanks

Thanks to Dan Abramov for help in Redux best practices and original idea.

Author: Tshelburne
Source Code: https://github.com/tshelburne/redux-batched-actions 
License: MIT License

#redux #javascript 

What is GEEK

Buddha Community

Redux-batched-actions: Redux Higher Order Reducer + Action

Reduce Redux Boilerplate Code with Redux-Actions

Redux has become one of the most popular libraries in front-end development since it was introduced by Dan Abramov and Andrew Clark in 2015. They designed it as the successor for Flux, with the support of some developer tools and a few more concepts embedded in it.

Flux is a fancy name for observer pattern further modified to support React. Both Flux and Redux consist of similar concepts like Store, Actions (events in the application). In other words, Flux is a simple JavaScript object but with some middleware like redux-thunk. It can be a function or a promise for Redux. However, Redux is a single source of truth with concepts like immutability, which improve performance. It is one of the main reasons for Redux to dominate in State Management.

Image for post

Flux vs Redux comparison source: enappd.com

Despite its advantages, some developers have found it rather challenging to deal with Redux due to the amount of boilerplate code introduced with it. And the complexity of the code seems to be another reason for the difficulty.

In this article, we will look at how to reduce the boilerplate code brought about by Actions and Reducers using Redux-Actions

#react-redux-boilerplate #react-redux #react #react-actions #redux

Reid  Rohan

Reid Rohan

1650267840

Redux-batched-actions: Redux Higher Order Reducer + Action

redux-batched-actions

Batching action creator and associated higher order reducer for redux that enables batching subscriber notifications for an array of actions.

npm install --save redux-batched-actions

Usage

import {createStore, applyMiddleware} from 'redux';
import {batchActions, enableBatching, batchDispatchMiddleware} from 'redux-batched-actions';
import {createAction} from 'redux-actions';

const doThing = createAction('DO_THING')
const doOther = createAction('DO_OTHER')

function reducer(state, action) {
    switch (action.type) {
        case 'DO_THING': return 'thing'
        case 'DO_OTHER': return 'other'
        default: return state
    }
}

// Handle bundled actions in reducer
const store = createStore(enableBatching(reducer), initialState)

store.dispatch(batchActions([doThing(), doOther()]))
// OR
store.dispatch(batchActions([doThing(), doOther()], 'DO_BOTH'))

Recipes

Async

Usage for action creators that return objects is trivial, but it also works well with thunks to perform large reductions on multiple asynchronous actions, or actions that rely on external services. For example:

const setLoading = createAction('SET_LOADING')
const setUser = createAction('SET_USER')
const unsetLoading = createAction('UNSET_LOADING')

function login(credentials) {
    return function(dispatch) {
        dispatch(setLoading());

        authenticate(credentials)
            .then(user => {
                dispatch(batchActions([
                    setUser(user),
                    unsetLoading()
                ], 'LOGIN_SUCCESS'))
            })
        })
    }
}

In this example, the subscribers would be notified twice: once when the state is loading, and then again once the user has been loaded.

Middleware integration

You can add a middleware to dispatch each of the bundled actions. This can be used if other middlewares are listening for one of the bundled actions to be dispatched.

const store = createStore(
        reducer,
        initialState,
        applyMiddleware(batchDispatchMiddleware)
)

Note that batchDispatchMiddleware and enableBatching should not be used together as batchDispatchMiddleware calls next on the action it receives, whilst also dispatching each of the bundled actions.

Thanks

Thanks to Dan Abramov for help in Redux best practices and original idea.

Author: Tshelburne
Source Code: https://github.com/tshelburne/redux-batched-actions 
License: MIT License

#redux #javascript 

Origin Scale

Origin Scale

1616572311

Originscale Order Management System

Originscale order management software helps to manage all your orders across channels in a single place. Originscale collects orders across multiple channels in real-time - online, offline, D2C, B2B, and more. View all your orders in one single window and process them with a simple click.

#order management system #ordering management system #order management software #free order management software #purchase order management software #best order management software

Willis  Mills

Willis Mills

1625233200

Practical Redux Thunk | React Native | Async Actions | WTF is Redux

Learn how to use Async Actions in your react native app using Redux Thunk with a small demo.

New To React Native?
React Native Foundation + Firebase + Redux :
https://www.udemy.com/course/react-native-foundation/?referralCode=5AFD942A55973C3D60CB

Project Files : https://github.com/nathvarun/WTF-Is-Redux-React-Native-Tutorials/tree/7-Redux-Thunk
Custom Snippets(imrnc) http://bit.ly/CustomReactNativeSnippets

Donate : paypal.me/UNSUREPROGRAMMERIND

Twitter https://twitter.com/nathvarun
Instagram https://www.instagram.com/nathvarun25
Facebook https://www.facebook.com/nathvarun

#redux #async actions #react native #practical redux thunk #react

Let’s use redux in react

Redux is super simple to use. Actions are used to indicate what can be possible done to the states, reducers are used to indicate the transformation of the state, dispatch is used to execute the action and store is used to combine all together. Is it sounds like greek? let me explain in detail.

What is redux?

Redux is a state management library which can be used in React and it can be also used in Angular, Vue and even vanilla JavaScript. Apart from that Context API can be used as an alternative for Redux.

Why we need redux? can’t we use states and props? This is an additional burden.

Image for post

Let me explain, If sub component has its’ own states then it is not a problem to manage them. Then what if those data is needed for the sub component two. Then we have to do **state uplifting **and pass those data to the parent component as follows and pass them to the child component as props. Then it is still manageable.

Image for post

What if those data is needed for Component One and Component Two as well. Then we have to face the problem of **props drilling **as follows because we have to pass those data here and there using props and it become a burden.

Image for post

Then redux come to solve this issue by separating the data from components as follows.

#redux-reducer #react-redux #redux #react