How to retrieve the user-agent using getStaticProps in NextJS

Looking to retrieve the user-agent within getStaticProps for logging purposes

In our project, we are implementing access and error logs. As part of this, we want to include the user-agent in the logs as well. To achieve this, we have decided to use getStaticProps. However, I encountered difficulties when trying to access the user-agent. While adding the user agent to the search query using middleware worked, it resulted in creating multiple files with duplicate data in the cache, which is not ideal. Additionally, the context used in getStaticProps does not contain the req and res objects, making it challenging to retrieve the user-agent from req.

javascriptreactjsnext.jsserver-side-renderinguser-agent

Answer №1

getStaticProps doesn't include information about the user agent because it's compiled and served statically.

If you do need the user agent for some reason, there are several options available:

  • You can use a Middleware that runs before a request to your static page.
  • Alternatively, you can utilize getServerSideProps which gives you access to the req object and associated headers.
  • Another option is to send data from the client side, such as making a query to your server.
  • Additionally, consider using third-party applications like Google Analytics or similar tools to track browser values (this can provide insights on user agent usage patterns).

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