Module 9: Building a Real-World Application

Lesson 1: Setting up the Project Structure

Creating a well-organized project structure is essential for maintainable and scalable applications. Follow these best practices:

Structure Overview:

/components
/pages
/public
/styles
/utils

- Explanation:
  - components/ : Reusable UI components.
  - pages/ : Route-based structure for the application.
  - public/ : Static assets such as images and fonts.
  - styles/ : Global and module-specific CSS files.
  - utils/ : Helper functions and utilities.

Lesson 2: Using an External API

Learn how to fetch and integrate data from an external API in a Next.js application.

- Steps:
  1. Choosean API (e.g., OpenWeatherMap, GitHub API).
  2. Fetch data using getStaticProps or getServerSideProps :

export async function getStaticProps() {
const res = await fetch(‘https://api.example.com/data’); const data = await res.json();

return {
props: { data },
};
}

export default function Page({ data }) { return <div>{JSON.stringify(data)}</div>;
}

- Best Practices:
  - Use environment variables for API keys.
  - Handle errors gracefully with try-catch blocks or fallback content.

Lesson 3: Implementing Authentication

Add user authentication to your application using libraries like next-auth or custom APIs.

- Steps with ******** next-auth :
  1. Install next-auth :
    
    npm install next-auth
  2. Configure anAPI route:
    
    import NextAuth from ‘next-auth’;
    import Providers from ‘next-auth/providers’;
    
    export default NextAuth({ providers: [
    Providers.GitHub({
    clientId: process.env.GITHUB_CLIENT_ID, clientSecret: process.env.GITHUB_CLIENT_SECRET,
    }),
    ],
    });
  3. Protectpages using getSession :
    
    import { getSession } from ‘next-auth/client’;
    
    export async function getServerSideProps(context) { const session = await getSession(context);
    if (!session) { return {
    redirect: {
    destination: ‘/api/auth/signin’, permanent: false,
    },
    };
    }
    
    return {
    props: { session },
    };
    }

Lesson 4: SEO Optimization

Optimize your application for search engines using built-in Next.js features.

- Steps:
  1. Add metadata with the <Head> component:
    
    import Head from ‘next/head’;
    
    export default function Page() { return (
    <>
    <Head>
    <title>My Page</title>
    <meta name=”description” content=”This is my page description.” />
    </Head>
    <div>Welcome to My Page</div>
    
    );
    }
  2. Optimize images with the <Image> component.
  3. Use dynamic rendering methods (SSR or ISR) for up-to-date

- Best Practices:
  - Use descriptive URLs and headings.
  - Integrate schema markup for rich results.

Additional Resources

Example Projects

Related

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