Exploring the Next.js Route API to Retrieve and Utilize Request Body Data

I've been experimenting with the new Route API's in Next v13.2, but I'm facing some difficulty in extracting the body values from a POST request.

When calling the API on the client side, my code looks something like this:

      const response = await fetch("/api/bot", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
        },
        body: JSON.stringify({ prompt: "Testing" }),
      });

To handle this POST request, I created a file named route.js within the app directory.

Within this file, I defined a function to process the POST request and attempted to retrieve the values from the request object in various ways, without success.

My code snippet looked something like this:

export async function POST(request) {
  console.log("Request", request.body.prompt);
  return new Response({ response: prompt });
}

Despite multiple tries, I couldn't successfully extract the body values from the request objects.

Answer №1

To utilize Next.js 13.4, you can send a POST request in the following manner:

const response = await fetch("/api/bot", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
        },
        body: JSON.stringify({ prompt: "Testing" }),
      });

If you want to extract the body data, you can use the following code snippet:

import { NextResponse } from 'next/server'

export async function POST(req) {
  const body = await req.json()
  return NextResponse.json({prompt: body.prompt})
}

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