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javascriptreactjsserver-side-renderingremix.run

how to redirect from a utility function in remix run


I am using Remix-run and i want to redirect to my login page from a auth utility function. but it doesnt work. here is a similar function to my authentication utility method

import { redirect } from 'remix';

 async function authenticate(request){
  try{
    const user = await rpc.getUser(request);
    return user
  } catch(e){
   console.log(e) // logs error when rpc fails
   if(e.response.status === 401){
    return redirect('/login')
   }
   return redirect('/500')
  }
 }

//component.jsx

import {useLoaderData } from 'remix';

export async function loader({ request }) {
  const user = await auth.authenticate(request);
  return { user };
}

export default function Admin(){
 const { user } = useLoaderData();
  return <h1>{user.name}</h1>
}

if the auth rpc fails i get the error in the logs. but redirect never happens. If i move redirect part to my loader function it works as expected. its not only working inside the utility function


Solution

  • After digging in the docs and remix jokes app demo. i found that you need to throw a redirect from any other function other than loaders/actions to do redirects. you can also throw Http response if wanted.

    import { redirect } from 'remix';
    
     async function authenticate(request){
      try{
        const user = await rpc.getUser(request);
        return user
      } catch(e){
       if(e.response.status === 401){
        throw redirect('/login')
       }
       throw redirect('/500')
      }
     }