What are the steps to access a query parameter within an API route.js file using the latest App routing strategy?

Here is the goal I am aiming for:

  1. Utilize Next.js with App router.
  2. Establish a backend route /api/prompt?search=[search_text]
  3. Retrieve and interpret the search query parameter in my route.ts file.
  4. Based on the search parameter, send back data to the frontend component.

Everything seems to be going well, except for point #3.

While running the application locally using npm run dev, everything works smoothly. However, when I attempt to build it using npm run build, an unexpected error occurs:

The error message states: DynamicServerError: Dynamic server usage: Page couldn't be rendered statically because it used nextUrl.searchParams. Further details can be found here: https://nextjs.org/docs/messages/dynamic-server-error

I have reviewed the information provided in the error message but I am struggling to see how it relates to my code. It's possible that I lack a proper understanding of how Next.js operates. I am unsure if this issue stems from something within my code or if it is a bug within Next.js itself.

The expected outcome would be either consistent errors during both the development (npm run dev) and build stages (npm run build), or no errors at all during the build process.

Here is the reference to the router.ts file that I am discussing. This project was inspired by this YouTube tutorial.

Update: By including the parameter in a path segment, I encountered no issues during the build. Therefore, there appears to be a workaround solution available.

Answer №1

Indeed, this issue arises during the build process but functions correctly in the development phase. To prevent encountering the "DynamicServerError" during building, you must include the specified line in your "route.ts" file to alter the route handler's behavior and make it fully dynamic:

export const dynamic = 'force-dynamic';

To delve deeper into this topic, refer to the following page.

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