从 React/Next.js 中的 getInitalProps 重定向

Question

I am using React and Next.js and trying to redirect a user from a page when the data for that page is not available using Router.push('/another-page') .

To do this I am checking for a status code in getInitalProps and applying a conditional. It looks like this:

  const statusCode = action.currentArticle ? 200 : 404

  if (isServer) res.statusCode = statusCode

  if (statusCode === 404) {
    Router.push('/')
  }

The status code is being set properly and it makes it inside the conditional, at which point I am greeted with this error: No router instance found. You should only use "next/router" inside the client side of your app. No router instance found. You should only use "next/router" inside the client side of your app.

Actually, I am getting the same error no matter WHERE in the component's lifecycle events I try to redirect, and am getting little info online about this error.

The pattern of redirecting from getInitalProps can be seen in this next.js wiki: HERE

Any ideas on why this error is occurring or how to fix it are much appreciated ;)

Answer 1

I am using React and Next.js and trying to redirect a user from a page when the data for that page is not available using Router.push('/another-page') .

To do this I am checking for a status code in getInitalProps and applying a conditional. It looks like this:

  const statusCode = action.currentArticle ? 200 : 404

  if (isServer) res.statusCode = statusCode

  if (statusCode === 404) {
    Router.push('/')
  }

The status code is being set properly and it makes it inside the conditional, at which point I am greeted with this error: No router instance found. You should only use "next/router" inside the client side of your app. No router instance found. You should only use "next/router" inside the client side of your app.

Actually, I am getting the same error no matter WHERE in the component's lifecycle events I try to redirect, and am getting little info online about this error.

The pattern of redirecting from getInitalProps can be seen in this next.js wiki: HERE

Any ideas on why this error is occurring or how to fix it are much appreciated ;)

Answer 2

I am using React and Next.js and trying to redirect a user from a page when the data for that page is not available using Router.push('/another-page') .

To do this I am checking for a status code in getInitalProps and applying a conditional. It looks like this:

  const statusCode = action.currentArticle ? 200 : 404

  if (isServer) res.statusCode = statusCode

  if (statusCode === 404) {
    Router.push('/')
  }

The status code is being set properly and it makes it inside the conditional, at which point I am greeted with this error: No router instance found. You should only use "next/router" inside the client side of your app. No router instance found. You should only use "next/router" inside the client side of your app.

Actually, I am getting the same error no matter WHERE in the component's lifecycle events I try to redirect, and am getting little info online about this error.

The pattern of redirecting from getInitalProps can be seen in this next.js wiki: HERE

Any ideas on why this error is occurring or how to fix it are much appreciated ;)

Answer 3

I am using React and Next.js and trying to redirect a user from a page when the data for that page is not available using Router.push('/another-page') .

To do this I am checking for a status code in getInitalProps and applying a conditional. It looks like this:

  const statusCode = action.currentArticle ? 200 : 404

  if (isServer) res.statusCode = statusCode

  if (statusCode === 404) {
    Router.push('/')
  }

The status code is being set properly and it makes it inside the conditional, at which point I am greeted with this error: No router instance found. You should only use "next/router" inside the client side of your app. No router instance found. You should only use "next/router" inside the client side of your app.

Actually, I am getting the same error no matter WHERE in the component's lifecycle events I try to redirect, and am getting little info online about this error.

The pattern of redirecting from getInitalProps can be seen in this next.js wiki: HERE

Any ideas on why this error is occurring or how to fix it are much appreciated ;)

Answer 4

I am using React and Next.js and trying to redirect a user from a page when the data for that page is not available using Router.push('/another-page') .

To do this I am checking for a status code in getInitalProps and applying a conditional. It looks like this:

  const statusCode = action.currentArticle ? 200 : 404

  if (isServer) res.statusCode = statusCode

  if (statusCode === 404) {
    Router.push('/')
  }

The status code is being set properly and it makes it inside the conditional, at which point I am greeted with this error: No router instance found. You should only use "next/router" inside the client side of your app. No router instance found. You should only use "next/router" inside the client side of your app.

Actually, I am getting the same error no matter WHERE in the component's lifecycle events I try to redirect, and am getting little info online about this error.

The pattern of redirecting from getInitalProps can be seen in this next.js wiki: HERE

Any ideas on why this error is occurring or how to fix it are much appreciated ;)

Answer 5

To make sure the page never render, we need to add await new Promise(() => {}) to end. The promise no needed resolve anything.

Home.getInitialProps = async ({res}) => {
    if(res) {
      res.writeHead(302, {location: '/dashboard'});
      res.end();
    } else {
      // window.location.href = '/dashboard';
      // Or with SPA redirect
      Router.push('/dashboard');
    }
 
    await new Promise(() => {});

    return {}
}

Answer 6

I am using React and Next.js and trying to redirect a user from a page when the data for that page is not available using Router.push('/another-page') .

To do this I am checking for a status code in getInitalProps and applying a conditional. It looks like this:

  const statusCode = action.currentArticle ? 200 : 404

  if (isServer) res.statusCode = statusCode

  if (statusCode === 404) {
    Router.push('/')
  }

The status code is being set properly and it makes it inside the conditional, at which point I am greeted with this error: No router instance found. You should only use "next/router" inside the client side of your app. No router instance found. You should only use "next/router" inside the client side of your app.

Actually, I am getting the same error no matter WHERE in the component's lifecycle events I try to redirect, and am getting little info online about this error.

The pattern of redirecting from getInitalProps can be seen in this next.js wiki: HERE

Any ideas on why this error is occurring or how to fix it are much appreciated ;)