What is the best way to access dynamic URL parameters in the Next.js 13 app router from a nested server-side component?

This query pertains to the Server-Side components in Next.js 13 app router:

I have a good grasp on how the slug parameter is passed to the default function in app/blog/[slug]/page.tsx:

export default function Page({ params }: { params: { slug: string } }) {
  return <div>My Post: {params.slug}</div>
}

If a deeply nested component is rendered, can an internal component access the URL's slug, similar to using the useRouter hook in client-side components?

For instance, if my structure in app/blog/[slug]/page.tsx looks like this:

export default function Page({ params }: { params: { slug: string } }) {
  return <MyPost/>
}

and MyPost is defined as follows:

function MyPost() {
  return <div>This is the post: <PostText/></div>
}

is there a way for PostText to access the slug without requiring me to pass it down through all the nested components?

Answer №1

Based on my understanding, achieving this functionality is not supported in server components. The best solution would be to pass the params or slug to your MyPost component as a prop.

Answer №2

Attempting to retrieve the dynamic URL parameters in the Server components is not feasible. The params must be passed down to the component.

Although NextJS offers some hooks, they are only functional within the client components.

Answer №3

If you're looking for a solution to that issue, I have just developed a new package for exactly that purpose:

https://www.npmjs.com/package/@custom/next-server-context

Here's how it operates:

/app/[myCustomParam]/page.tsx

import { pageContext } from '@custom/next-server-context'
import { CustomNestedServerComponent } from './CustomNestedServerComponent'

export default pageContext.Wrapper(({ params, searchParams }) => {
  return (
    <>
      <h1>MyPage</h1>
      <CustomNestedServerComponent />
    </>
  )
})

/app/[myCustomParam]/CustomNestedServerComponent.tsx

import { pageContext } from '@custom/next-server-context'

export const CustomNestedServerComponent = () => {
  const { params, searchParams } = pageContext.getOrThrow()
  return <div>CustomNestedServerComponent: {params.myCustomParam}</div>
}

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