Next13 is out, and they advise to use the new app directory where every component is by default a "Server Component"
Inside a "server Component", you can use:
async/await to fetch data.cookies() to retrieve cookiesheaders() to retrieve request headers.But I can't find how to retrieve query params.
Before Next 13, within getServerSideProps, you could use context.query to access the query params.
Do you know how to retrieve query params using "server Component" in Next 13.
I don't think it's currently possible to do this in an arbitrary component. However, it is possible to access query parameters in page.tsx files, and pass these down to your components via props.
export default function Page({
params,
searchParams,
}: {
params: { slug: string };
searchParams?: { [key: string]: string | string[] | undefined };
}) {
return <h1>{searchParams?.greeting || "Hello!"}</h1>;
}
See the Docs
searchParams is work for me. thanks.
I know this is going to sound bad but I have not found anything either, so you will have to parse it out yourself
here is an example
import type { NextRequest, NextResponse } from 'next/server';
import qs from 'qs';
export async function GET(request: NextRequest, response: NextResponse) {
try {
const rawParams = request.url.split('?')[1];
const params = qs.parse(rawParams);
// Now you have access to the query String parameters //
// Or you can do it this way
const yourParamName = request.nextUrl.searchParams.get('paramName');
// also try getAll() I think that might work
} catch (error: unknown) {
console.log(error);
}
}
req.nextUrl.searchParams which returns URLSearchParams. You get get a specific param by req.nextUrl.searchParams.get("paramName").For anyone using NextJs 15 , Here is how its done
//category/[filter]/page.tsx
import React from 'react'
const Page = async ({
params,searchParams
}: {
params: Promise <{params:string}>
searchParams: Promise<{ [key: string]: string | string[] | undefined }>
}) => {
console.log("param object :",await params);
console.log("query search param object :",await searchParams); //localhost:3000/category?filter=ABC&Q=4 will result in {filter:'ABC',Q:'4'}
return (
<div>Server side page</div>
)
}
export default Page
For me works like -
const NewsPage = async ({
searchParams,
}: {
searchParams?:{ [key: string]: string | undefined };
}) => {
console.log('searchParams', searchParams);
return (
<>
</>
);
};
export default NewsPage;
Finally, I found an easy way to get Query Value in Next.js 13.4.
Example route.ts file:
export async function GET(request: Request) {
const url = new URL(request.url);
const searchParams = new URLSearchParams(url.search);
const skip = searchParams.get("skip"); // Retrieves the value of the 'skip' parameter
const limit = searchParams.get("limit"); // Retrieves the value of the 'limit' parameter
console.log(skip);
console.log(limit);
return new Response(JSON.stringify({message: "Hello World"}), {status: 200});
}
request variable coming from? I dont see it in scope for app router/Nextjs
request object (as Nishant already explained above).
If you want to access the URL search params without having to pass them down, you might want to use middleware to set the URL in the request headers and get that in your server component.
// /middleware.ts
import { NextResponse } from 'next/server';
export default function middleware(request: NextRequest, event: NextFetchEvent) {
request.headers.set('x-url', request.url);
return next(request, event);
}
Then, in any server component:
import { headers } from 'next/headers';
export const ServerComponent = () => {
const url = new URL(headers().get('x-url')!);
const searchParams = url.searchParams;
// ...
}
Also see https://github.com/vercel/next.js/issues/43704#issuecomment-1411186664
NextJS version - 13.5.2
File location PROJECT/src/app/api/products/route.js
export async function GET(request) {
const queryString = request.url.split('?')[1];
const page = Number(new URLSearchParams(queryString).get('page')) || 1;
const limit = Number(new URLSearchParams(queryString).get('limit')) || 1;
console.log(page)
console.log(limit)
return NextResponse.json({ 'status': true }, { status: 200 })
}
Hi the best tool for you is NUQS.
You can add this in any page :
import {
createSearchParamsCache,
parseAsInteger,
parseAsString
} from 'nuqs/server'
// Note: import from 'nuqs/server' to avoid the "use client" directive
const searchParamsCache = createSearchParamsCache({
// List your search param keys and associated parsers here:
q: parseAsString.withDefault(''),
maxResults: parseAsInteger.withDefault(10)
})
export default function Page({
searchParams
}: {
searchParams: Record<string, string | string[] | undefined>
}) {
// ⚠️ Don't forget to call `parse` here.
// You can access type-safe values from the returned object:
const { q: query } = searchParamsCache.parse(searchParams)
return (
<div>
<h1>Search Results for {query}</h1>
<Results />
</div>
)
}
// Then in any server component you can read the cache
function Results() {
// Access type-safe search params in children server components:
const maxResults = searchParamsCache.get('maxResults')
return <span>Showing up to {maxResults} results</span>
}
As a result, you can access searchParams everywhere in the three without having to find it yourself.
Just a combination of everything mentioned here. As a set of functions you can put in a lirary and import as needed. These will work on client and server
export const parseHeaders = (request: Request) => {
let headers = {};
for (let [name, value] of request.headers.entries()) {
headers[name] = value;
}
return headers;
};
export const parseQuery = (request: Request) => {
const url = new URL(request.url);
const query = parseSearchParams(url);
return query;
};
export const parseSearchParams = (url: URL) => {
const searchParams = new URLSearchParams(url.search);
let data = {};
for (let [name, value] of searchParams.entries()) {
data[name] = value;
}
return data;
};
export const parseRequest = (request: Request) => {
let query = parseQuery(request);
let headers = parseHeaders(request);
return { query, headers };
};
in a route,
export async function GET(request: Request) {
const { headers, query } = parseRequest(request);
in a client component without having to pass down props,
export function Component() {
const query = parseSearchParams(window.location);
}
server component