nextjs dynamic route mdx

gistfile1.md

To create a dynamic route using Next.js and MDX, you can follow these steps:

1. Install the required packages:

   npm install next-mdx-remote @mdx-js/react

2. Create a new page in the pages directory with the following file structure:

   - pages
     - posts
       - [slug].js
   

3. Inside the [slug].js file, import the necessary modules:

   import { getFiles, getFileBySlug } from '../../lib/mdx'
   import { MDXRemote } from 'next-mdx-remote'
   import { serialize } from 'next-mdx-remote/serialize'

4. Define the main component of the page:

   export default function PostPage({ source }) {
     return (
       <div>
         <MDXRemote {...source} />
       </div>
     )
   }

5. Implement the getStaticPaths and getStaticProps functions to fetch the necessary data for the dynamic route:

   export async function getStaticPaths() {
     const posts = await getFiles('posts') // Get the list of post files
     const paths = posts.map((post) => ({
       params: { slug: post.replace(/\.mdx/, '') },
     }))
   
     return { paths, fallback: false }
   }
   
   export async function getStaticProps({ params }) {
     const { slug } = params
     const post = await getFileBySlug('posts', slug)
     const mdxSource = await serialize(post.content) // Serialize MDX content
   
     return { props: { source: mdxSource } }
   }

6. Implement the necessary helper functions to fetch the post data. In this example, we're using the fs module to read the MDX files from the posts directory:

   import fs from 'fs'
   import path from 'path'
   import matter from 'gray-matter'
   
   const root = process.cwd()
   
   export async function getFiles(type) {
     return fs.readdirSync(path.join(root, 'data', type))
   }
   
   export async function getFileBySlug(type, slug) {
     const source = slug
       ? fs.readFileSync(path.join(root, 'data', type, `${slug}.mdx`), 'utf8')
       : fs.readFileSync(path.join(root, 'data', `${type}.mdx`), 'utf8')
   
     const { data, content } = matter(source)
   
     return { frontMatter: data, content }
   }

7. Create a directory named data in your project root and place your MDX files inside the posts directory. For example:

   - data
     - posts
       - hello-world.mdx
       - another-post.mdx
   

8. Finally, run your Next.js development server:

   npm run dev

You should now be able to access dynamic routes for your MDX posts. For example, if you have a post with the filename hello-world.mdx, you can access it at /posts/hello-world.