Next.js return the 404 error page in getInitialProps
Question
Currently I am following this example on how to redirect users in getInitialProps
https://github.com/zeit/next.js/wiki/Redirecting-in-%60getInitialProps%60
The problem is, if I want to return 404 like this, it will return a blank page instead of the usual Next.js 404 error page.
context.res.writeHead(404)
context.res.end();
Please note I know using ExpressJs and using statuscode 404 works, however, for this project I am not allowed to use ExpressJs so I need to use typical nodejs writeHead to do it.
8 answers
solution1
20 2017-12-14 17:34:14
In order to do that, you'll have to render the Error page in your page.
You can do something like this:
import React from 'react'
import ErrorPage from 'next/error'
class HomePage extends React.Component {
static async getInitialProps(context) {
try {
const data = await retrieveSomeData()
return { data }
} catch (err) {
// Assuming that `err` has a `status` property with the HTTP status code.
if (context.res) {
context.res.writeHead(err.status)
}
return { err: { statusCode: err.status } }
}
}
render() {
const { err, data } = this.props
if (err) {
return <ErrorPage statusCode={err.statusCode} />
}
/*
* return <Something data={data} />
*/
}
}
If you have a custom error page, instead of importing next/error , you'll have to import your custom _error page.
solution2
8 2021-04-28 12:04:12
Next v10 allows to return 404 page (not with props, but just plain as it is below)
if (!checkItem) {
return {
notFound: true
}
}
Full code that works for me: ✅✅✅
export const getServerSideProps = wrapper.getServerSideProps(async ({ req, res, locale, query, store }) => {
const { productId, categoryId } = query
const checkItem = await getProductBySlugSSR(productId, categoryId, store)
if (!checkItem) {
return { // <-----------------does the trick here!!
notFound: true
}
}
return {
props: {
...await serverSideTranslations(locale, ['common']),
}
}
})
Documentation: https://nextjs.org/blog/next-10#notfound-support
solution3
4 2021-01-14 09:59:03
As of NextJS 10, you can now include notFound: true in the return object of getStaticProps && getServerSideProps to redirect to the 404 page
Here are the release notes: https://nextjs.org/blog/next-10#redirect-and-notfound-support-for-getstaticprops--getserversideprops
solution4
3 2019-01-16 09:20:15
Implement your getInitialProps along the lines of:
static async getInitialProps(context) {
const {res} = context;
...
if ([something went wrong]) {
if (res) {
res.statusCode = 404;
}
return {
err: {
statusCode: 404
},
};
}
...
Then in render() check if err is defined in state, in which case return the ErrorPage (default or custom one, depending on your implementation) and that's it! The statusCode inside err is just for more granular message on the ErrorPage so it needs to be passed for it as props.
solution5
1 2019-01-25 07:01:16
import App, { Container } from 'next/app'
import React from 'react'
import Head from 'next/head'
import * as Sentry from '@sentry/node'
import Error from './_error'
require('es6-promise').polyfill()
require('isomorphic-fetch')
class MyApp extends App {
static async getInitialProps({ Component, ctx }) {
let pageProps = {}
let e
if (Component.getInitialProps) {
try {
pageProps = await Component.getInitialProps(ctx)
} catch (error) {
e = error
Sentry.captureException(error) //report to sentry
}
}
return { pageProps, e }
}
render() {
const { Component, pageProps, e } = this.props
if (e) {
return <Error /> // customize your error page
}
return (
<Container>
<Head>
<title> Your title</title>
</Head>
<Component {...pageProps} />
</Container>
)
}
}
export default MyApp
This works like a charm ~ just try catch in next/app, then it works for all the pages
solution6
1 2020-10-01 07:47:03
If you just have to implement the 404 PAGE like you do in cra
the code provided can be helpful: eg.
import AComponent from '../acomponent';
import Error from '../error';
const User = (data) => {
return data.id ? <AComponent /> : <Error />
}
User.getInitialProps = async (ctx) => {
const res = await fetch(...data) // list of items = []
const data = await res.json()
return data;
}
solution7
0 2022-01-26 10:17:10
我正在使用它，它对我有用
res.sendStatus(404)
solution8
0 2022-12-12 16:27:03
Here's how I do it
import ErrorPage from 'next/error'
const Mycomponenet = () =>{
if (!exists) {
return <ErrorPage statusCode={404}/>
}
}
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