Implementing Protected Routes and Authentication with React Router

Almost every web application requires some form of authentication to prevent unauthorized users from having access to the inner workings of the applications.

For this tutorial, I’ll be showing how to set up an authentication route and protect other routes from being accessed by unauthorized users.

Protected routes or private routes are those routes that refrain unauthorized users from penetrating the React app’s pages. We will create a React app that will have certain pages that allow only those users who are authorized. So, we will formulate some components for associating to routes and keep a fake auth state. this state will return a boolean value; by default, it returns a null state. Based on this, we will allow users to navigate to private or public routes in React.

Installation

To get started with React Router, you need to install it in your project. You can do this using npm or yarn:

npm install react-router-dom    or yarn add react-router-dom

Implementing protected Routes

To use React Router effectively, we’ll start by creating some components within your React application. Following these steps:

  1. Create a folder: Within your project directory, create a folder named “components” inside the “src” folder.
  2. Create Component Files: Inside the “components” folder, define three example files named “Home.js,” “Product.js,” and “Dashboardt.js.”.
  3. Define Component Content

Now, let’s update the component code for each of these files:

Home.js:-

// Home.js import React from 'react'; function Home () {     return (         <h2>Welcome to the Home Page</h2>        );   }  export default Home;
Code language: JavaScript (javascript)

Product.js:-

// Product.js import React from 'react'; function Product () {     return (         <h2>Welcome to the Product Page</h2>        );   }  export default Product;
Code language: JavaScript (javascript)

Dashboard.js:-

// Dashboard.js import React from 'react'; Function Dashboard (){     Return (      <h2>Welcome to the Dashboard Page</h2>         ); } export default Dashboard;
Code language: JavaScript (javascript)

Design a Navigation Bar:

To facilitate navigation between different pages, create a `Navbar.js` inside the components folder that serves as a layout component for your application.

import React from "react"; import { Link } from 'react-router-dom' const Navbar= () => {   return (     <nav>      <ul>           <li>             <Link to="/">Home</Link>           </li>           <li>             <Link to="/product">Product</Link>           </li>           <li>             <Link to="/dashboard">Dashboard</Link>           </li>         </ul>     </nav>   ) } export default Navbar;
Code language: JavaScript (javascript)

Set Up Route Protection

Create a file named ‘Protected.js’ within the ‘components’ directory. Inside this file, define a function called ‘Protected’ that accepts two props: ‘isSignedIn,’ representing the authentication state (true if signed in, false if not), and ‘children,’ which represents the private route components. The ‘Protected’ function is designed to handle protected routes, allowing access only to authenticated users while rendering the specified child components.

import React from 'react' import { Navigate } from 'react-router-dom' function Protected({ isSignedIn, children }) {   if (!isSignedIn) {     return <Navigate to="/" replace />   }   return children; } export default Protected;
Code language: JavaScript (javascript)

Configuring Private Routes in App.js

import { useState } from 'react'; import { BrowserRouter, Routes, Route } from 'react-router-dom'; import Navbar from './components/Navbar'; import Home from './components/Home'; import Products from './components/Products'; import Dashboard from './components/Dashboard'; import Protected from './components/Protected'; export default function App() {   // State to track user authentication status (null represents not signed in).   const [isSignedIn, setIsSignedIn] = useState(null);   // Function to simulate user sign-in.   const signin = () => {     setIsSignedIn(true);   }   // Function to simulate user sign-out.   const signout = () => {     setIsSignedIn(false);   }   return (     <div>       <h2>React Protected Routes Example</h2>       <BrowserRouter>         < Navbar />         <Routes>           {/* Home route accessible to all users */}           <Route path="/" element={<Home />} />           {/* Dashboard and Products routes protected by the 'Protected' component */}           <Route             path="/dashboard"             element={               <Protected isSignedIn={isSignedIn}>                 <Dashboard />               </Protected>             }           />           <Route             path="/products"             element={               <Protected isSignedIn={isSignedIn}>                 <Products />               </Protected>             }           />         </Routes>         {/* Conditional rendering of sign-in/sign-out buttons */}         {isSignedIn ? (           <div >             <button onClick={signout}>               Sign out             </button>           </div>         ) : (           <div>             <button onClick={signin}>               Sign in             </button>           </div>         )}       </BrowserRouter>     </div>   ); }
Code language: PHP (php)

By simulating authentication with useState and protecting routes with the Protected component, this code demonstrates the basic concept of implementing protected routes in a React application. In a real project, the authentication logic would be more sophisticated and secure, but this example provides a foundation for understanding the key principles involved.

Conclusion

In this tutorial, we’ve delved into the world of protected routes in React applications using React Router. These protected routes are essential for securing your web app and ensuring that only authorized users can access specific parts of it. We started by creating key components and establishing a basic authentication state, providing a foundational understanding of real-world authentication systems. The ‘Protected’ component served as the parent of protected routes, allowing access exclusively to authenticated users. Armed with these core concepts, 

Recent Post

  • Mastering Software Testing Strategies: Your Guide

    Implementing best software testing strategies is a crucial part of software development, ensuring that digital products meet industry standards. Defined by the International Software Testing Qualification Board, it encompasses a range of activities, both static and dynamic, throughout the software’s lifecycle. As an essential component of the Software Development Life Cycle (SDLC), the Software Testing […]

  • Your Complete Guide to Securing Your Kubernetes Cluster: Essential Tips for Beginners

    In today’s digital landscape, Kubernetes has emerged as the go-to solution for managing applications at scale. However, amidst its power lies a crucial concern: security. Ensuring the safety of your Kubernetes cluster is paramount to protecting your applications, data, and infrastructure. This comprehensive guide will walk you through essential practices and tips to help you […]

  • How to use Cloudinary in Node.js to upload images?

    It’s simple to use Cloudinary to upload images in a Nodе.js application, which can improve your app’s imagе management capabilities. Wе’ll go over how to sеt up and incorporate Cloudinary in your Nodе.js application for imagе uploads and how to use Cloudinary nodejs in this blog article. What is Cloudinary? Cloudinary is a cloud-based media […]

  • Mobile App User Experience- 10 Biggest Mistakes First-Time Founders Make 

    With the mobile app industry hitting a whopping 206 Billion in value (as per Grand View Research), it is no wonder more entrepreneurs are jumping into the mobile app market with their innovative ideas and life-changing solutions. But for those taking their first plunge, it is crucial to understand that creating an app isn’t just […]

  • Building Draggable Components in React

    As user interaction becomes more prevalent in today’s applications, sometimes it’s nice to use draggable elements in your apps. Consider website builders like Trello or Wix. They have drag-and-drop features that make it easy and convenient for users. Hello everyone! In this article, I will show some simple ways to create draggable components in React […]

  • How to Fetch Data from an API with JavaScript?

    In web development, integrating data from external sources is a common task. Application Programming Interfaces (APIs) play an important function in changing data amongst systems. In this blog, we’ll explore the way to Get information from an API with the use of JavaScript, supplying step-by-step the resource of-step commands with complete code examples of how […]