#reduxjs

[korshubudemycoursesblog]

Building FullStack E-Commerce App using SpringBoot & React: A Complete Guide

The rise of digital commerce has made e-commerce development a high-demand skill. Whether you're a backend engineer, frontend developer, or aspiring full-stack professional, learning how to build a full-stack e-commerce app using SpringBoot and React can transform your career opportunities.

This comprehensive guide walks you through the key concepts, architecture, and implementation details required to build a modern, scalable, and responsive e-commerce application. Let’s explore how you can leverage SpringBoot for your backend and React for your frontend to deliver a complete shopping experience.

🔍 Why Choose SpringBoot and React for E-Commerce Development?

SpringBoot and ReactJS are two of the most widely used frameworks in modern web development.

SpringBoot simplifies Java backend development by offering a robust and production-ready environment with minimal configuration.

React empowers developers to build dynamic, high-performance frontends with a component-based architecture.

When combined, these technologies enable you to build a responsive, scalable, and secure full-stack e-commerce platform.

🧠 Key Features of a FullStack E-Commerce Application

Before jumping into the implementation, let’s break down the core features that a well-structured e-commerce app should support:

�� User Authentication and Authorization (JWT, OAuth)

✅ Product Management (CRUD operations)

✅ Shopping Cart and Wishlist functionality

✅ Order Management

✅ Payment Gateway Integration

✅ Admin Dashboard for Inventory and Orders

✅ Responsive Design for Mobile and Desktop

✅ API-First Development (RESTful APIs)

⚙️ Setting Up the Development Environment

🖥 Backend (SpringBoot)

Technologies Needed:

Java 17+

SpringBoot 3+

Spring Data JPA

Spring Security

Hibernate

MySQL/PostgreSQL

Maven/Gradle

Setup:

Initialize SpringBoot Project via Spring Initializr

Add dependencies: Web, JPA, Security, DevTools

Configure application.yml/application.properties

Set up entity models for User, Product, Order, etc.

💻 Frontend (React)

Technologies Needed:

Node.js & npm

React.js (CRA or Vite)

Redux Toolkit

Axios

React Router

Tailwind CSS or Material UI

Setup:

bash

CopyEdit

npx create-react-app ecommerce-frontend

cd ecommerce-frontend

npm install axios react-router-dom redux-toolkit @reduxjs/toolkit react-redux

📦 Designing the Backend with SpringBoot

📁 Entity Structure

java

CopyEdit

@Entity

public class Product {

   @Id @GeneratedValue

   private Long id;

   private String name;

   private String description;

   private BigDecimal price;

   private String imageUrl;

   private int stockQuantity;

}

You’ll also define entities for User, Order, CartItem, etc., along with their repositories and service layers.

🔐 Authentication with JWT

Use Spring Security and JWT (JSON Web Tokens) for secure login and protected routes.

🌐 RESTful APIs

Create REST endpoints using @RestController to handle:

/api/products

/api/users

/api/orders

/api/auth/login

Use @CrossOrigin to allow frontend access during development.

🌐 Creating the Frontend with React

🧩 Folder Structure

css

CopyEdit

src/

├── components/

├── pages/

├── redux/

├── services/

├── App.js

🛍 Product Display Page

Use Axios to fetch product data from SpringBoot APIs.

jsx

CopyEdit

useEffect(() => {

  axios.get('/api/products').then(res => setProducts(res.data));

}, []);

Render the products in a responsive grid using Tailwind or MUI.

🛒 Shopping Cart with Redux

Manage cart state globally using Redux Toolkit:

javascript

CopyEdit

const cartSlice = createSlice({

  name: 'cart',

  initialState: [],

  reducers: {

    addToCart: (state, action) => { ... },

    removeFromCart: (state, action) => { ... },

  }

});

🔑 User Login

Implement a login form that sends credentials to /api/auth/login and stores JWT in localStorage for authenticated routes.

💳 Integrating Payment Gateway

Integrate a payment solution like Stripe or Razorpay on the frontend.

Use React SDK to collect payment details

Send transaction info to backend to create orders

Store order confirmation in the database

Stripe setup example:

jsx

CopyEdit

const handlePayment = async () => {

  const response = await axios.post('/api/payment', { cart });

  window.location.href = response.data.checkoutUrl;

};

🧾 Building the Admin Panel

Use role-based authentication to restrict access.

Admin Features:

View/Add/Edit/Delete products

Manage orders

Track customer data

Create a separate React route /admin with a dashboard UI using Material UI’s components or Bootstrap.

🛠 Best Practices for FullStack E-Commerce Development

Use DTOs to reduce payload size and protect internal structure.

Enable CORS in SpringBoot to allow frontend access.

Implement Lazy Loading in React for route-based code splitting.

Use React Query or SWR for advanced data fetching if needed.

Apply form validation using Formik + Yup or React Hook Form.

Cache static content (e.g., product images) using a CDN.

Use HTTPS and secure cookies for production environments.

🚀 Deployment Strategy

🧳 Backend:

Use Docker for containerization.

Host on AWS EC2, Heroku, or DigitalOcean.

Use NGINX as reverse proxy.

🧳 Frontend:

Build static files using npm run build.

Host on Netlify, Vercel, or GitHub Pages.

Use environment variables for API URLs.

📊 SEO Optimization for E-Commerce Site

Even for a full-stack developer, basic SEO is crucial. Here’s what to apply:

Use React Helmet to add meta titles and descriptions.

Apply structured data (JSON-LD) for product listings.

Ensure mobile responsiveness and fast load times.

Optimize images and lazy-load them.

Create a sitemap.xml for crawlers.

🎯 Who Should Take a FullStack E-Commerce Approach?

This tech stack is perfect for:

Java developers transitioning to full-stack roles

Frontend devs learning backend architecture

Students building real-world portfolio projects

Freelancers creating scalable client apps

Teams building startup MVPs

🎓 Learn This Stack with a Real Course

Looking for structured learning instead of cobbling it together? Explore a complete Udemy course on building a FullStack E-Commerce App using SpringBoot & React, available on Korshub with a 100% free coupon (limited seats only!).

✅ Conclusion

Building a full-stack e-commerce app with SpringBoot and React is not just about coding—it’s about creating a scalable, secure, and user-centric application. From designing RESTful APIs to integrating Stripe and managing complex state with Redux, you gain a robust skill set that employers and clients seek.

Start building today and take the first step toward becoming a complete full-stack developer.

[pravaahconsultings]

Integrating Redux Toolkit into Your React TypeScript App: A Comprehensive Guide

It is essential to keep up with the latest tools and technologies in the field of front-end web development. One such tool that has gained popularity among developers is Redux Toolkit. Redux Toolkit is a package that simplifies the process of managing state in React applications, especially when using TypeScript.

In this blog, we'll guide you through the process of integrating the Redux Toolkit into your React TypeScript app, ensuring a smoother and more efficient development experience.

What is Redux Toolkit?

Redux Toolkit is a package that provides a set of tools and best practices for managing state in Redux applications. It includes utilities such as configureStore, which simplifies the setup of a Redux store, as well as createSlice, which allows you to define Redux slices with less boilerplate code. Redux Toolkit also includes middleware such as redux-thunk, which enables you to write asynchronous logic in your Redux reducers.

Benefits for Developers and Users:

Simplified State Management:

Redux Toolkit simplifies state management, ensuring a more predictable application state for a smoother user experience.

Improved Code Organization:

Encourages a structured approach to code organization, enhancing readability and maintainability.

Enhanced Debugging:

Includes Redux DevTools for real-time inspection and debugging of state changes.

Streamlined Asynchronous Actions:

Simplifies handling of asynchronous actions like API calls, improving performance.

Scalability:

Designed to scale with the application's complexity, maintaining performance and maintainability.

Type Safety:

Provides TypeScript integration for type safety, reducing runtime errors, and improving code quality.

Step 1: Installing Redux Toolkit

The first step in integrating the Redux Toolkit into your React TypeScript app is to install the package. You can use npm or yarn for this:

npm install @reduxjs/toolkit

or

yarn add @reduxjs/toolkit

Step 2: Setting Up the Redux Store

Next, you'll need to set up the Redux store in your application. Create a new file called store.ts and define your Redux store using the ‘configureStore’ function from Redux Toolkit:

import { configureStore } from '@reduxjs/toolkit';

import rootReducer from './reducers';

const store = configureStore({

  reducer: rootReducer,

});

export default store;

Step 3: Creating Redux Slices

Redux Toolkit allows you to define Redux slices using the createSlice function. A slice is a collection of Redux reducers and actions that are related to a specific feature or part of your application. Here's an example of how you can create a slice for managing a user's authentication state:

import { createSlice } from '@reduxjs/toolkit';

const authSlice = createSlice({

  name: 'auth',

  initialState: {

    isAuthenticated: false,

    user: null,

  },

  reducers: {

    login(state, action) {

      state.isAuthenticated = true;

      state.user = action.payload;

    },

    logout(state) {

      state.isAuthenticated = false;

      state.user = null;

    },

  },

});

export const { login, logout } = authSlice.actions;

export default authSlice.reducer;

Step 4: Connecting Redux to Your React Components

Finally, you'll need to connect your Redux store to your React components using the Provider component from the react-redux package. Use the Provider component to wrap your root component and pass your Redux store as a prop:

import React from 'react';

import ReactDOM from 'react-dom';

import { Provider } from 'react-redux';

import store from './store';

import App from './App';

ReactDOM.render(

  <Provider store={store}>

    <App />

  </Provider>,

  document.getElementById('root')

);

Integrating the Redux Toolkit into your React TypeScript app can help you manage state more effectively and improve the overall development experience. By following the steps outlined in this guide, you'll be able to seamlessly integrate Redux Toolkit into your app and take advantage of its powerful features. Remember to stay updated with the latest developments in front-end web development, as new tools and technologies are constantly emerging.

Ready to elevate your front-end services? For professional front-end services that will boost your app, get in touch with a front-end web development company right now. https://www.pravaahconsulting.com/front-end-development

[manasthinker-blog]

[laravelreactjs]

Contemporary ReduxJS ( Redux Toolkit )

Contemporary ReduxJS ( Redux Toolkit )

 Derive The Course   Label: 104,99 $ Contemporary ReduxJS ( Redux Toolkit ) kursuna hoşgeldiniz. React son beş yılın en popüler Javascript kitaplığı ve iş piyasası hala her zamankinden daha sıcak. Hatta birçok insan bundan net geliştirmenin geleceği olarak bahsediyor. 1,300’den fazla geliştiricinin ve 94,000 ‘den fazla sitenin ReactJS kullandığı tahmin edilmekte. Büyük ve küçük şirketler React…

[tonkifivestar]

Reduxjs toolkit configurestore

#Reduxjs toolkit configurestore how to#

env configures port for this Redux Toolkit CRUD App.Ībout Redux elements that we’re gonna use: – TutorialService has methods for sending HTTP requests to the Apis. – http-common.js initializes axios with HTTP base Url and headers. – There are 3 pages: TutorialsList, Tutorial, AddTutorial. – App is the container that has Router & navbar. – package.json contains main modules: react, react-router-dom, react-redux, redux-toolkit, axios & bootstrap. The reducer for a specific section of the Redux app state is called a “slice reducer”. Reducer will take the action and return new state. Other React Components will work with the Store via calling async Thunks using React Redux Hooks API. We’re gonna create Redux store for storing tutorials data. This diagram shows how Redux elements work in our React Application: Redux-Toolkit CRUD with Hooks and Rest API example – TutorialDataService uses axios to make HTTP requests and receive responses.

AddTutorial has form for submission new Tutorial.

Tutorial has form for editing Tutorial’s details based on :id.

TutorialsList gets and displays Tutorials.

– We have 3 pages that call async Thunks (that will take care of dispatching the right actions) which uses TutorialDataService to interact with Rest API. It has navbar that links to routes paths. – The App component is a container with React Router. Now look at the React components that we’re gonna implement: – Django & MongoDB Redux-Toolkit CRUD with React Hooks Component Diagram You can find step by step to build a Server like this in one of these posts: We will build a React Redux Tutorial Application with Rest API calls in that:įind all Tutorials which title contains keyword Redux-Toolkit example with CRUD Application React Hooks + Redux: CRUD example with Axios and Rest API – React Hooks + Firestore example: CRUD app – React Hooks + Firebase Realtime Database: CRUD App – React Form Validation with Hooks example – React Table example: CRUD App | react-table 7 – React Hooks File Upload example with Axios & Progress Bar – React Hooks (without Redux) CRUD example with Axios and Rest API – React CRUD example with Axios and Web API (using React Components) – React Hooks + Redux: JWT Authentication example – React Hooks: JWT Authentication (without Redux) example

#Reduxjs toolkit configurestore how to#

In this tutorial, I will show you how to build a Redux Toolkit CRUD example using React Hooks working with Rest API, display and modify data with Router, Axios & Bootstrap.

[syndicode]

Redux starter kit

Most people find difficult about Redux to understand when to use it. That is why we shared with you the material where most of Redux core concepts explained in details. And now it’s getting easier to work with it since the release of a new Redux starter kit.  The Redux Starter Kit package i...

[nthchildconsulting-blog]

Redux Todos

Redux is a state manager for Javascript. You can use these patterns to store your state in any Javascript project not just React. It will help you write consistent behavior running in different environments. You can learn more about redux at:

https://redux.js.org/

We will be building the Todos store based on the tutorial from the Redux website and including it in our React Material UI Todos app. Here are the links to the tutorial and full code base.

https://redux.js.org/basics

https://gitlab.com/nthchildconsulting/material-ui-todos

Redux

First we will create a folder called redux in the src directory of our app. This way we can keep everything self contained.

Constants

I like to create a folder called constants that will hold all of our constants we need throughout our store. Within that folder create a file called ActionTypes.js that will describe what kind of actions we can perform on our store.

src/redux/constants/ActionTypes.js

export const ADD_TODO = 'ADD_TODO'; export const TOGGLE_TODO = 'TOGGLE_TODO'; export const SET_VISIBILITY_FILTER = 'SET_VISIBILITY_FILTER';

You can see that we will perform three simple actions. One to create a todo, toggle a todo complete, and setting the visibility of what todos have been completed or not.

Actions

Now we will create a folder called actions that will hold all of the actions that we will perform in our store.

src/redux/actions/TodosActions.js

import * as types from '../constants/ActionTypes'; let nextTodoId = 0; export const addTodo = text => ({ type: types.ADD_TODO, id: nextTodoId++, text, }); export const setVisibilityFilter = filter => ({ type: types.SET_VISIBILITY_FILTER, filter, }); export const toggleTodo = id => ({ type: types.TOGGLE_TODO, id, }); export const VisibilityFilters = { SHOW_ALL: 'SHOW_ALL', SHOW_COMPLETED: 'SOME_COMPLETED', SHOW_ACTIVE: 'SHOW_ACTIVE', };

Within the reducer of Redux it will expect a type and any other data needed to perform the action. In this file we setup the data structure that will be sent into the reducer. We have three functions, addTodo, toggleTodo, and setVisibilityFilter. You will be able to use these functions within your app.

Reducers

Reducers are where the implementations of the actions happen. Create a folder called reducers. We will add two reducers to the folder.

src/redux/reducers/TodosReducer.js

import * as types from '../constants/ActionTypes'; const TodosReducer = (state = [], action) => { switch (action.type) { case types.ADD_TODO: return [ ...state, { id: action.id, text: action.text, completed: false, }, ]; case types.TOGGLE_TODO: return state.map(todo => { return todo.id === action.id ? { ...todo, completed: !todo.completed } : todo; }); default: return state; } }; export default TodosReducer;

You can see from the code that we are checking the type of action and returning a brand new state based on the action. When we call addTodo it will create a new todo object and put it on the state. If we call toggleTodo it will map through all the todos and toggle the one we clicked on.

src/redux/reducers/VisibilityFilterReducer.js

import { VisibilityFilters } from '../actions/TodosActions'; import * as types from '../constants/ActionTypes'; const VisibilityFilterReducer = ( state = VisibilityFilters.SHOW_ALL, action ) => { switch (action.type) { case types.SET_VISIBILITY_FILTER: return action.filter; default: return state; } }; export default VisibilityFilterReducer;

This reducer will handle the setVisibilityFilter action and just set what will be visible in our todos.

Now lets combine both of our reducers to use in our main store.

src/redux/reducers/index.js

import { combineReducers } from 'redux'; import TodosReducer from './TodosReducer'; import VisibilityFilterReducer from './VisibilityFilterReducer'; export default combineReducers({ todos: TodosReducer, visibilityFilter: VisibilityFilterReducer, });

src/redux/store.js

import { applyMiddleware, createStore } from 'redux'; import logger from 'redux-logger'; import thunkMiddleware from 'redux-thunk'; import reducers from './reducers'; export default createStore(reducers, applyMiddleware(thunkMiddleware, logger));

Now we can add in the store into our React app, or whatever app you need to.

src/index.js

import React from 'react'; import App from './containers/App/App'; import { render } from 'react-dom'; import registerServiceWorker from './registerServiceWorker'; import './index.css'; import { Provider } from 'react-redux'; import store from './redux/store'; const rootElement = document.getElementById('root'); render( <Provider store={store}> <App /> </Provider>, rootElement ); registerServiceWorker();

We have setup in our React app to use a Provider with our redux store. We can then dispatch actions to the store. Here is an example of adding a todo.

src/containers/AddTodo/AddTodo.js

import React, { Component } from 'react'; import PropTypes from 'prop-types'; import { connect } from 'react-redux'; import { addTodo } from '../../redux/actions/TodosActions'; import Input from '@material-ui/core/Input'; import Button from '@material-ui/core/Button'; import AddIcon from '@material-ui/icons/Add'; import { withStyles } from '@material-ui/core/styles'; import Grid from '@material-ui/core/Grid'; const styles = theme => ({ button: { [theme.breakpoints.down('xs')]: { width: '35px', height: '35px', }, }, }); class AddTodo extends Component { state = { todo: '', }; handleChange = event => { this.setState({ todo: event.target.value }); }; handleClick = () => { if (!this.state.todo.trim()) { return; } this.props.dispatch(addTodo(this.state.todo)); this.setState({ todo: '' }); }; render() { const { classes } = this.props; return ( <div> <Grid container spacing={24} justify="center"> <Grid item xs={10} sm={10}> <Input fullWidth placeholder="What will you do next?" value={this.state.todo} onChange={this.handleChange} onKeyPress={e => { if (e.key === 'Enter') { e.preventDefault(); this.handleClick(); } }} /> </Grid> <Grid item xs={2}> <Button variant="fab" color="primary" aria-label="add" className={classes.button} onClick={this.handleClick} > <AddIcon /> </Button> </Grid> </Grid> </div> ); } } AddTodo.propTypes = { classes: PropTypes.object.isRequired, }; export default connect()(withStyles(styles)(AddTodo));

We can use the redux connect to add the store to our props. When we click on the button to add a todo it will call the handleClick event and dispatch our addTodo action.

Conclusion

There is a bit of boilerplate when using Redux but you can explicitly set up all your actions and easily test all the of functionality of your app. Once you have all your actions coded all you need to do is provide your app with the Redux store and it will be available to all your components.

[rehman-coding]

#javascript #web #react #tech #developers #learncoding #code #developer #webdev #programming #coders #webdevelopment #softwaredeveloper #reactjs #webdeveloper #programmingstudents #programmers #htmlcss #100daysofcode #coder #dev #development #coding #javascriptdeveloper #css #html #webdevelopment #learnjavascript #softwareengineer #frontend #reactjsdevelopers #nodejsdeveloper #reactjs #redux #reduxjs (at Islamabad, Pakistan) https://www.instagram.com/p/CncCpoxjQwt/?igshid=NGJjMDIxMWI=

[awesomecodetutorials]

Redux JS - Learn to use Redux JS with your React JS apps! ☞ http://bit.ly/2METdIh #Reduxjs #javascript

[tak4hir0]

JSer.info #537 - 次期LTS候補となるNode.js 16がリリースされました。 V8 9.0へアップデート、timers/promisesの追加、Apple Silicon向けのprebuiltバイナリの配布に対応しています。 また、fs.rmdirのrecursiveオプションの非推奨化、process.bindingを使ったアクセスの非推奨化module.createRequireFromPathの削除なども含まれています。 Node.js 16にはNode.js 15の変更も含まれるので、npm 7へのアップデートやUnhandled Rejections時の終了ステータスの変更などの破壊的な変更も含まれています。 Node.js 16は2021-10-26からLTSとなる予定です。 また、Node.js 10.xは2021-04-30でサポートが終了されます。 Chrome 91 betaがリリースされました。 Origin Trialとして、Service Workerのmanifestのcapture_links、WebTransport、WebXR Plane Detection API。 その他には、Timerの解像度を仕様準拠の値に変更、WebSockets over HTTP/2のサポート、Service WorkerでES Modulesのサポートなどが含まれています。 Node.jsとTypeScriptを扱うORMであるPrismaがProduction Readyというリリースされています。 記事では、Primsaを構成するPrisma Client、Prisma Migrate、Prisma StudioというツールとPrismaの特徴について紹介されています。 ヘッドライン Node v16.0.0 (Current) | Node.js nodejs.org/en/blog/release/v16.0.0/ node.js ReleaseNote Node.js 16.0.0リリース。 V8 9.0へアップデート、timers/promisesの追加、Apple Silicon向けのprebuiltバイナリの配布など。 fs.rmdirのrecursiveオプションの非推奨化、process.bindingを使ったアクセスの非推奨化、module.createRequireFromPathの削除など。 これに加えてNode 15での変更であるnpm 7へのアップデートなどが含まれている Release v11.5.0 · raineorshine/npm-check-updates github.com/raineorshine/npm-check-updates/releases/tag/v11.5.0 npm Tools ReleaseNote npm-check-updates 11.5.0リリース。 yarnの自動検出に対応 Release v9.0.0 · puppeteer/puppeteer github.com/puppeteer/puppeteer/releases/tag/v9.0.0 Chrome browser library ReleaseNote Puppeteer 9.0.0リリース。 Chromium 91へアップデート、Apple M1のサポート、FileChooser.cancel()が同期処理になるなど Chromium Blog: Chrome 91: Handwriting Recognition, WebXR Plane Detection and More blog.chromium.org/2021/04/chrome-91-handwriting-recognition-webxr.html Chrome ReleaseNote Chrome 91ベータリリース。 Origin Trialとして、Service Workerのmanifestのcapture_links、WebTransport、WebXR Plane Detection API。 Timerの解像度を仕様準拠の値に変更、WebSockets over HTTP/2のサポート、Service WorkerでES Modulesのサポートなど Release v4.1.0 · reduxjs/redux github.com/reduxjs/redux/releases/tag/v4.1.0 redux JavaScript library ReleaseNote Redux 4.1.0リリース。 エラーメッセージをproduction buildから除外することでファイルサイズの改善など アーティクル Understanding TypeScript's Popularity | Notes orta.io/notes/js/why-typescript TypeScript article history opinion TypeScriptがなぜ人気となったのかを主要なイベントのタイムラインや類似するツールと比較しながら見ている記事。 Prisma – The Complete ORM for Node.js & TypeScript www.prisma.io/blog/prisma-the-complete-orm-inw24qjeawmb node.js TypeScript MySQL PostgreSQL article Node.jsとTypeScript向けのORMマッパーであるPrismaがProduction Readyとなった。 スキーマからTypeScriptの型定義を出力して利用できるPrisma Client、データモデルからPrisma Migrate、GUIでデータの閲覧と変更ができるPrisma Studioを持つ Using asynchronous web APIs from WebAssembly web.dev/asyncify/ WebAssembly JavaScript article Emscriptenで非同期を扱うAsyncify、C++とJS間の値を変換するEmbind、JavaScriptを組み合わせてWasmから非同期のWebPlatformAPIを扱う方法について。 The great SameSite confusion :: jub0bs.com jub0bs.com/posts/2021-01-29-great-samesite-confusion/ security article cross-site/same-siteとcross-origin/same-originの違いについての解説記事。 Same-Site Cookieの動作とメカニズムについて Overflow Issues In CSS — Smashing Magazine www.smashingmagazine.com/2021/04/css-overflow-issues/ CSS article ページの幅を突き抜ける要素の問題と対策についての記事。 要素やCSSプロパティごとに問題の原因や対応方法について紹介している。 またoverflowしている要素の見つけた方などのデバッグ方法について サイト、サービス、ドキュメント Headless WYSIWYG Text Editor – tiptap editor www.tiptap.dev/ JavaScript editor library ProseMirrorベースのWYSIWYGエディタライブラリ。 Vue、React、Svelteなどに対応、Y.jsを使ったリアルタイムコラボレーションの対応、シンタックスハイライトやMarkdownの記法を使ったショートカットに対応している ソフトウェア、ツール、ライブラリ関係 mhmd-22/ezgesture: Small js library for enabling gesture events github.com/mhmd-22/ezgesture JavaScript library ドラッグ、スワイプ、ピンチイン/アウトを扱うライブラリ Vue.js UI/UX Library - Inkline inkline.io/ Vue UI library Vue向けのUIフレームワーク Style Check style-check.austingil.com/ CSS Tools CSSを読み込んでHTML要素に対するスタイルの影響をチェック���きるツール 書籍関係 The GraphQL Guide graphql.guide/ GraphQL book video GraphQLについての書籍と動画。 John ResigとLoren Sands-RamshawによるGraphQLのガイド。 GraphQLの解説、フロントエンド、バックエンド、React、Vue、Android、iOSについて扱う

[javascriptfan]

Make Games and Web Apps: Unity, React and Redux Masterclass ☞ https://goo.gl/s5YYuY #reactjs #reduxjs

[nerdblogpl]

Using redux-thunk efficiently with async/await

A very common issue I see with people writing code using redux-thunk is falling into callback hell.

// actions/auth.js const login = (dispatch, getState) => { const { username, password } = getState().signInForm dispatch({ type: SIGN_IN_REQUEST }) fetch('myapi/sign_in', { credentials: 'include', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ username, password } }).then(data => { data.json().then(({ data, errors }) => { if(errors) { dispatch({ type: SIGN_IN_FAILURE, errors }) } else { dispatch({ type: SIGN_IN_SUCCES, data }) } }.catch(exception => { dispatch({ type: SIGN_IN_FAILURE, exception }) }) }) }

The problem begins when you have to do more than one asynchronous thing at the same time. The code easily grows or you split it into multiple smaller actions that are dispatching other actions and them dispatching yet another while making the entire logic harder to comprehend. The entire execution of the application becomes a graph that you have to mentally rotate inside your head and sometimes because of the splitting you're losing important information and have to pass that in a completely weird way, like by triggering a store change to pass data to the component via props and then continuing the flow inside componentDidMount or componentWillReceiveProps.

But there is an easier way!

One of the commonly unknown features of redux-thunk is composition. The return of the function passed to the dispatch will be returned from that dispatch, or in simpler terms:

const foo = dispatch(dispatch => { return 'bar' }) // foo === 'bar'

This means that if you return a Promise from a dispatch, you can then act on it and chain your callbacks to it with .then. This alone allows you to easily orchestrate multiple operations into one action creator but it gets even more powerful with async/await syntax:

const login = async (dispatch, getState) => { const { username, password } = getState().signInForm dispatch({ type: SIGN_IN_REQUEST }) try { const { data, errors } = await signInApiCall(username, password) if(errors) { dispatch({ type: SIGN_IN_FAILURE, errors }) return false } dispatch(setCurrentUser(data)) await dispatch(fetchAppSettings()) // can throw an exception on failure await dispatch(updateLanguagePreferences()) return true } catch(exception) { dispatch({ type: SIGN_IN_FAILURE, exception }) return false } }

You can then use this code in your component and keep the navigation logic away from your actions and in the components, making it more reusable:

async onSubmit(e) { const { login, navigate } = this.props e.preventDefault() if (await login()) { navigate('/sign-in-success') } }

This will also make your code easier to follow and simpler to understand which is usually a good idea since you'll be the one maintaining it in the future ;)

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