Using redux with react hooks

Question

I'm trying to figure out the best way to use redux with react hooks. I saw the following

How to use React hooks + Redux

However I'm not convinced this is the best way to go. Does anyone have any alternative ideas?

I also saw the following and seems quite good. https://www.npmjs.com/package/redux-react-hook

Thanks

Answer 1

The official react-redux package provides hooks since v7.1. Redux hooks can be used instead of the connect(mapStateToProps, mapDispatchToProps) function.

useSelector()

Extract data from the Redux store state using a selector function.

useDispatch()

Return a reference to dispatch that can be used to dispatch actions.

This is an example implementing a counter where the counter value is managed by Redux.

import React from 'react'
import { useDispatch, useSelector } from 'react-redux'

export const CounterComponent = () => {
  const dispatch = useDispatch();
  const counter = useSelector(state => state.counter);

  return (
    <div>
      <span>{counter}</span>
      <button onClick={() => dispatch({ type: 'INCREMENT_COUNTER' })}>
        Increment counter
      </button>
    </div>
  );
}

Source: https://react-redux.js.org/api/hooks

Answer 2

As an alternative to redux you can use hooks to manage the state, you can create the similar using the combination of context api and custom hooks

 const initialState = { stateSet: false, plan: { } } const AppReducer = (state = initialState, action) => { return { plan: planReducer(state.plan, action) } } const AppProvider = (props) => { const [state, dispatch] = useReducer(AppReducer, initialState); return ( <AppStateContext.Provider value={state}> <AppDispatchContext.Provider value={dispatch}> {props.children} </AppDispatchContext.Provider> </AppStateContext.Provider> ) } const useAppState = () => { const context = React.useContext(AppStateContext); return context; } const useAppDispatch = () => { const context = React.useContext(AppDispatchContext); return context; }

then inside your component, you can any component

const { plan } = useAppState();
 dispatch({ type: 'updateBusinessInfo', payload: { businessInfo: businessInfo, addOnsInfo: addOnsInfo } });

refer https://kentcdodds.com/blog/how-to-use-react-context-effectively fantastic post by kencdoods for details

Answer 3

At the time of writing this is still in alpha stage, if you want to try it update your react-redux to v7.1.0-alpha.4.

https://react-redux.js.org/next/api/hooks#hooks

Answer 4

After doing this recently myself I posted this

How to connect redux store using useSelector() when input fields already mapped using useState()

Make sure you npm I react-redux@next

Cheers

Answer 5

Here is how to use Redux with Hooks in 3 simple steps : Counter example.

Source code: https://github.com/trackmystories/Redux-hooks-counter-app-with-axios.

NOTE: https://react-redux.js.org/introduction/getting-started

Step 1:

create a reducer.js file, define and combine your reducers:

reducer.js

 import { combineReducers } from "redux"; const counter = (state = 0, action) => { switch (action.type) { case "ADD": return state + 1; case "SUBTRACT": return state - 1; default: return state; } }; const rootReducer = combineReducers({ counter // additional reducers ... }); export default rootReducer;

Step 2

Create a counter component which will access the state and render it to the view:

NOTE: please refer to "Redux Terms and Concepts" to get a better understanding of Actions, State and View. https://redux.js.org/tutorials/essentials/part-1-overview-concepts

You don't need to use connect mapStateToProps and dispatchStateToProps with redux hooks instead use { useDispatch, useSelector }.

We can pass the actions "ADD" and "SUBTRACT" inside of the button directly, without defining an action.js file.

CounterComponent.js

 import React from "react"; import { useDispatch, useSelector } from "react-redux"; export default function CounterComponent() { const dispatch = useDispatch(); // dispatct action "ADD","SUBTRACT". const counter = useSelector((state) => state.counter); // your apps state. return ( <div> // dispatch "SUBTRACT" <button onClick={() => dispatch({ type: "SUBTRACT",})}> SUBTRACT <button> // pass the current state <text> display count : {counter}</text> // dispatch "ADD" <button onClick={() => dispatch({ type: "ADD",})}> ADD <button> </div> ) }

Step 3:

Lastly link your RootReducer to the createStore and pass it to the Provider.

App.js

 import React from 'react'; import { Provider } from "react-redux"; import { createStore } from "redux"; import CounterComponent from './CounterComponent.jsx'; // import your reducers import rootReducer from "./reducers"; // link your reducers to the store const store = createStore(rootReducer); // Pass your store to the Provider wrapping your Component. export default function App() { return ( <> <Provider store={store}> <CounterComponent/> </Provider> </> ); };