Скачать или смотреть Fixing the Next.js Link and Path Issue: Avoiding Double Paths in Navigation

Learn how to navigate correctly between product pages in Next.js by fixing the double path issue with the Link component.
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This video is based on the question https://stackoverflow.com/q/68174836/ asked by the user 'Mathias Riis Sorensen' ( https://stackoverflow.com/u/10176381/ ) and on the answer https://stackoverflow.com/a/68174929/ provided by the user 'fjc' ( https://stackoverflow.com/u/3599151/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Next.js Link and Path Issue

If you’re working with Next.js and have a popover menu set up to display products, you might run into a frustrating issue: navigating to product pages can sometimes result in double paths in your URL. For instance, when clicking on a product from the menu while already on a product page, you may end up with a URL like products/products/some-product instead of the intended products/some-product. This problem arises from relative path linking, and it's a common hurdle for developers.

In this post, we'll break down why this happens and how to fix it, ensuring smooth navigation for users on your Next.js application.

Why Does This Happen?

The issue occurs due to the way relative paths work in web applications. When you're on a product page, for example, at the URL /products/some-product, clicking on a link that navigates to products/some-product constructs a new URL that appends to the current path. Thus, instead of just going to /products/some-product, you end up with /products/products/some-product. This can lead to confusion and a poor user experience.

The Solution: Adding a Leading Slash

To fix this issue, you need to adjust how the paths are defined in your Next.js Link component. By adding a leading slash to your product paths, you signify that the paths should be treated as absolute rather than relative.

Step-by-Step Fix

Locate Your Link Component: Find the part of your code where you're generating the links for your products. This is usually in a component that displays your product list.

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Modify the Link href: Change the href prop in the Link component to include a leading slash. The corrected line will look like this:

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Test Your Navigation: After making this change, test your navigation by clicking on different products both from the main product list and from within a product page. You should now see the correct URLs without duplication.

Example of Corrected Code

Here’s how your updated code snippet might look:

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Conclusion

By simply modifying the href in your Link component to include a leading slash, you can eliminate the issue of double paths in your navigation, ensuring users can browse your products smoothly without URL confusion. Happy coding!