Using React Router v6 with dynamic route parameters causes empty component rendering
Hey everyone, I'm running into an issue that's driving me crazy. I'm stuck trying to This might be a silly question, but I'm having an issue with React Router v6 where my component renders empty when trying to access a route with dynamic parameters... I have a setup where I'm mapping over an array of items and generating routes based on their IDs. However, when I navigate to a specific item using its ID in the URL, the expected component doesn't render properly, and I receive an empty output. Here’s the code for my routing setup: ```jsx import { BrowserRouter as Router, Routes, Route } from 'react-router-dom'; import ItemDetail from './ItemDetail'; import ItemList from './ItemList'; const App = () => { return ( <Router> <Routes> <Route path='/' element={<ItemList />} /> <Route path='/item/:id' element={<ItemDetail />} /> </Routes> </Router> ); }; export default App; ``` In the `ItemDetail` component, I'm trying to access the ID like this: ```jsx import { useParams } from 'react-router-dom'; const ItemDetail = () => { const { id } = useParams(); console.log('Item ID:', id); // This logs as expected // Simulating data fetching based on ID const item = fetchItemById(id); // Assume this function fetches item based on ID return ( <div> <h1>Item Details</h1> {item ? <p>{item.details}</p> : <p>Loading...</p>} </div> ); }; export default ItemDetail; ``` The `fetchItemById` function seems to return `undefined` for some IDs, which leads to the component rendering an empty state. However, when I directly log the ID from `useParams`, it shows the correct value based on the URL. I suspect there might be an issue with how I'm fetching the data. I'm using a mock function for `fetchItemById`, which is synchronous and returns null for IDs that don't exist in my array, but I want to ensure it handles valid cases correctly. I'm not sure if I need to handle this with a useEffect to manage asynchronous fetching or if there's a better approach. I'm currently using React v18 and React Router v6. Any suggestions or insights on this would be greatly appreciated! What am I doing wrong? My development environment is Linux. Any help would be greatly appreciated! I recently upgraded to Javascript LTS. Thanks for taking the time to read this! I recently upgraded to Javascript LTS. I appreciate any insights!