Skip to main content

How to use Redux in Next.js

Introduction

In this blog post, we will explore how to use Redux with Next.js and create todo and disptach it to Redux store and and pass the todo (state) to a Page and display the created Todo. We will cover the process of setting up the necessary Redux store and cover the end to end flow.

Create Next.js application

  • npx create-next-app@latest

Install dependencies

  • npm install --save @reduxjs/toolkit
  • npm install --save react-redux
  • npm install --save redux-persist

Folders and files needed

  • Create folder lib under src folder(src/lib)
  • Create Interface Todos under lib folder (lib/Todos.ts)
    • export interface ITodo {
  todosState: [Todo]
}
export interface Todo {
  todoName: string,
  description: string,
  userName: string,
  id: string
}
  • Create folder store under lib (lib/store)
  • Create file under store (lib/store/todosSlice.ts) and add the below code to todosSlice.ts file
    • export interface ITodo {
import { ITodo, Todo } from "@/lib/Todo";
import { createSlice } from "@reduxjs/toolkit";
import type { PayloadAction } from "@reduxjs/toolkit";

const initialState: ITodo = {
    todosState: [{
        todoName: '',
        description: '',
        userName: '',
        id: ''
    }]
};

export const todosSlice = createSlice({
    name: "todos",
    initialState,
    reducers: {
        setTodosState: (state, action: PayloadAction) => {
            state.todosState.push(action.payload);
        },
    },
});

export const { setTodosState } = todosSlice.actions;
export const todosReducer = todosSlice.reducer;
  • Create file under lib (lib/store/store.ts) and add the below code to store.ts file
    • import { configureStore } from "@reduxjs/toolkit";
import { useDispatch, TypedUseSelectorHook, useSelector } from "react-redux";
import { todosReducer } from "./store/todosSlice";

export const store = configureStore({
  reducer: { todos: todosReducer },
  middleware: (getDefaultMiddleware) =>
    getDefaultMiddleware({ serializableCheck: false }),
});

export type RootState = ReturnType;
export type AppDispatch = typeof store.dispatch;

export const useAppDispatch = () => useDispatch();
export const useAppSelector: TypedUseSelectorHook = useSelector
  • Create file under store (lib/store/index.ts) and add the below code to index.ts file
    • import { combineReducers, configureStore } from "@reduxjs/toolkit";
import { persistReducer } from "redux-persist";
import storage from "redux-persist/lib/storage";
import { todosReducer } from "./todosSlice";

const todosPersistConfig = {
    key: "todos",
    storage: storage,
    whitelist: ["todosState"],
};

const rootReducer = combineReducers({
    todos: persistReducer(todosPersistConfig, todosReducer),
});

export const store = configureStore({
    reducer: rootReducer,
    middleware: (getDefaultMiddleware) =>
        getDefaultMiddleware({ serializableCheck: false }),
});

Now start writing Component side code

  • Create StoreProvider.tsx file under app folder(app/StoreProvider.tsx) and add the below code to StoreProvider.tsx file
  • Create todos.tsx file under app folder(app/todos.tsx) and add the below code to todos.tsx file
  • Create todos-updater.tsx file under app folder(app/todos-updater.tsx) and add the below code to todos-updater.tsx file
  • Add the below code to page.tsx file

Now start the application with below command in Project root folder

  • npm run dev

Conclusion

In this blog post, we learned how to create Redux store for Todos to hold the data and passed the created todos to todos-updater to display the created todo in simple todos application.

Comment on this Post if you have any questions.

Made with VideoToBlog

Labels:

Comments

Post a Comment

Popular posts from this blog

Ultimate Guide to Implementing DELETE Operations in Next.js with Prisma

In this tutorial, we will learn how to delete a post in Next.js using the API and UI code. Deleting a post requires making changes to the folder structure and implementing the delete method. Let's dive in! Changing the Folder Structure Currently, the folder structure for the API is not suitable for deleting posts. We need to pass an ID to delete a specific post. To enable this functionality, we will need to alter the folder structure. Here's how: Create a new folder named "posts" within the API directory. Move the existing file into the "posts" folder. Rename the file to "index". Now, when we access the "posts" endpoint, it will work without specifying the file name. Implementing the Delete Method To delete a post, we need to create a new file in the "posts" folder and pass the I...
Post a Comment
Read more

Creating API Routes for a Full Stack Application

In this blog post, we will explore how to create API routes for a full stack application. API routes are essential for connecting the frontend components to the backend database and fetching data. We will specifically focus on creating the API routes and endpoints for making API calls and retrieving data. Setting up the Database Before we dive into creating the API routes, we need to set up the database. In this example, we will be using a local PostgreSQL database. To connect to the database, we have a schema file that defines a table called "todos" with four fields: id, name, username, and created_at. Currently, we have two records in the todos table. The next step is to write the API routes to connect to the database and fetch the data. Using Prisma for API Routing To create the API routes, we will be using the Prisma library, specifically the Prisma client. The Prisma client allows us to connect to the database and execute queries. To start with the API rout...
Post a Comment
Read more