Скачать или смотреть How to Dynamically Change the Fetch URL in getServerSideProps with Button Click in Next.js

Learn how to effectively change the fetch URL in `getServerSideProps` using button clicks in Next.js. Discover a clear method to achieve dynamic data fetching in your React applications.
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Can I Change the Fetch URL in getServerSideProps on Button Click?

If you're working with Next.js and getServerSideProps, you might find yourself wanting to dynamically change the URL for fetching data based on user interactions, like button clicks. This is a common requirement when developing React applications that need to present up-to-date or context-specific information. Here’s how you can effectively achieve that.

Understanding the Problem

You might have encountered a scenario where you want to change the page variable that sets your fetch URL, and refresh the data supplied to getServerSideProps upon clicking a button. However, doing this directly can be tricky because the page variable exists in the server context, where getServerSideProps runs. Meanwhile, button click events are handled in the client-side environment, making direct access to server-only variables impossible.

Solution Overview

To solve this issue, we can utilize URL query parameters to control our data fetching logic. By changing the query string when the button is clicked, we can instruct getServerSideProps to fetch new data based on the updated parameters. Here’s how you can implement this solution step-by-step.

Step 1: Set Up Your Button Click Handler

You need to utilize the useRouter hook from Next.js to manage your route and query parameters. When the button is clicked, we will push a new query to the router to trigger a refresh.

Sample Code Implementation

Here is an example of how you can set this up:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Adjust getServerSideProps Logic

In the getServerSideProps function, adjust the fetch URL to use a query parameter passed from the router. In this example, we are dynamically pulling the keyword from the URL query, which can be set when the button is clicked.

Step 3: Test the Functionality

Run your Next.js application and click the button. You should see that the news articles change based on the specified keyword, which in this case will switch from "apple" to "tesla" as per the button click.

Conclusion

By leveraging query parameters and the router functionality in Next.js, you can easily change the fetch URL in getServerSideProps based on button clicks. This method not only conforms to the Next.js architecture but also keeps your application efficient and user-friendly. Experiment with different keywords and API sources to broaden the scope of your application’s functionality!