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 Merge Sort: A Comprehensive Guide to Efficient Sorting

    Are you eager to enhance your coding skills by mastering one of the most efficient sorting algorithms? If so, delve into the world of merge sort in Python. Known for its powerful divide-and-conquer strategy, merge sort is indispensable for efficiently handling large datasets with precision. In this detailed guide, we’ll walk you through the complete […]

  • Optimizing Chatbot Performance: KPIs to Track Chatbot Accuracy

    In today’s digital age, chatbots have become integral to customer service, sales, and user engagement strategies. They offer quick responses, round-the-clock availability, and the ability to handle multiple users simultaneously. However, the effectiveness of a chatbot hinges on its accuracy and conversational abilities. Therefore, it is necessary to ensure your chatbot performs optimally, tracking and […]

  • Reinforcement Learning: From Q-Learning to Deep Q-Networks

    In the ever-evolving field of artificial intelligence (AI), Reinforcement Learning (RL) stands as a pioneering technique enabling agents (entities or software algorithms) to learn from interactions with an environment. Unlike traditional machine learning methods reliant on labeled datasets, RL focuses on an agent’s ability to make decisions through trial and error, aiming to optimize its […]

  • Understanding AI Predictions with LIME and SHAP- Explainable AI Techniques

    As artificial intelligence (AI) systems become increasingly complex and pervasive in decision-making processes, the need for explainability and interpretability in AI models has grown significantly. This blog provides a comprehensive review of two prominent techniques for explainable AI: Local Interpretable Model-agnostic Explanations (LIME) and Shapley Additive Explanations (SHAP). These techniques enhance transparency and accountability by […]

  • Building and Deploying a Custom Machine Learning Model: A Comprehensive Guide

    Machine Learning models are algorithms or computational models that act as powerful tools. Simply put, a Machine Learning model is used to automate repetitive tasks, identify patterns, and derive actionable insights from large datasets. Due to these hyper-advanced capabilities of Machine Learning models, it has been widely adopted by industries such as finance and healthcare.  […]

  • Mastering Conversational UX: Best Practices for AI-Driven Chatbots

    In today’s digital landscape, where customer engagement reigns supreme, traditional marketing strategies are giving way to more interactive and personalized approaches. The rise of conversational interfaces, often powered by Artificial Intelligence (AI) and Natural Language Processing (NLP), has transformed how businesses interact with their audiences. Whether through AI-driven chatbots on websites, virtual assistants on mobile […]

Click to Copy