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Learn how to dynamically create pages in Next.js by reading files from a directory, even when your components are outside the `/pages` directory.
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Creating Dynamic Pages in Next.js Using Files from a Directory

One of the powerful features of Next.js is its ability to generate static pages at build time. However, you might encounter a situation where you want to create dynamic pages based on the files within a specific directory, and you may run into restrictions if your component is located outside the /pages directory. This guide will walk you through the problem and provide a solution that ensures you can create links to your dynamically generated pages seamlessly.

Understanding the Problem

You have a default layout component for your application that needs to fetch file data from a particular directory to dynamically create navigation links. The challenge arises because Next.js restricts using getStaticProps outside the /pages directory. The standard method for fetching data at build time won't work in this case.

Key Issues

getStaticProps can’t be used in components outside the /pages directory.

You want to link files within your layout component dynamically, but limitations are in place regarding data fetching at build time.

Solution Overview

The solution to this problem involves extending the build process of your Next.js application by creating a custom Node.js script. This script will read through the files in the desired directory, compiling their data into a single .json file that can be imported into your layout component on the client-side.

Step-by-Step Guide to Implement the Solution

1. Create the Node.js Script

First, you need to create a custom Node.js script that traverses the specific directory and compiles the file information into a .json file. The script should output an array of objects, each containing the page and title information from your files.

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2. Update package.json

Next, you need to update the package.json file to include a new NPM script that runs both the next build command and your new script.

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3. Import the JSON Data in Your Component

In your layout component, you can now import the generated .json file and use it to create links dynamically.

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Conclusion

By creating a custom script to collect your directory's file data and compiling it into a .json file, you can successfully navigate around the limitation of placing your components outside the /pages directory in Next.js. This approach allows for a scalable and efficient way to generate dynamic content and ensure your application remains flexible and easy to update.

Happy coding, and don't hesitate to experiment with this approach based on your requirements!