Mastering Route Handlers in Next.js

In this final part of our Next.js tutorial series, we'll explore route handlers, which allow you to manage complex routing scenarios in your Next.js applications.

Dynamic Routing

Next.js supports dynamic routing, enabling you to create pages with dynamic content. To create a dynamic route, use square brackets in the file name. For example, to create a user profile page, you can create a file named [id].js in the pages/users directory:

// pages/users/[id].js
import { useRouter } from 'next/router';

export default function UserProfile() {
  const router = useRouter();
  const { id } = router.query;

  return <h1>User Profile: {id}</h1>;
}

This page can be accessed at http://localhost:3000/users/1, http://localhost:3000/users/2, etc.

API Routes

Next.js also allows you to create API routes, which are useful for handling server-side logic. To create an API route, add a file to the pages/api directory. Here's an example:

// pages/api/hello.js
export default function handler(req, res) {
  res.status(200).json({ message: 'Hello, world!' });
}

This API route can be accessed at http://localhost:3000/api/hello.

Conclusion

With route handlers, you can manage complex routing scenarios and server-side logic in your Next.js applications. This concludes our Next.js tutorial series.

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