How to Implement Conditional Rendering with API Calls in React Using useFetch

Discover effective methods for implementing conditional rendering in a React application with API calls, ensuring smooth user experiences during search functionalities.
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How to Implement Conditional Rendering with API Calls in React Using useFetch

Creating a dynamic application often requires conditional rendering, particularly when utilizing API calls to fetch data based on user input. In this guide, we will address a common problem developers face when trying to render different data based on a search query in a React application. Let's dive in and explore effective solutions to achieve this functionality seamlessly.

The Problem

Imagine a scenario where a user interacts with a search bar to find images from an API (e.g., Unsplash). If the search bar is empty, we want to display a default set of images according to a specific query. However, if the user inputs a search term, we need to fetch and display images related to that term. The challenge lies in managing the API calls and rendering the correct content based on the user's input.

The Code

Here’s a snippet of the existing code that illustrates the current setup:

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

This code logic works, but there are ways to improve it significantly.

The Solution

1. Make API Calls React to State Changes

Instead of defining a URL string directly, we can modify the useFetch call to respond dynamically to the state of the search input (img). This can be achieved by following the below approach:

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

2. Create a Separate Function for URL Generation

For cleaner code and better readability, you can extract URL creation logic into a dedicated function, like so:

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

3. Further Simplify with Conditional Logic Inside the Function

We can enhance the getUrl function by incorporating the conditional logic directly inside it to streamline the process even further:

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

Conclusion

By implementing these strategies, you can enhance your React application to handle different API calls efficiently for conditional rendering based on user input. A well-structured application not only improves user experience but also makes the code easier to maintain and understand. If you're looking to implement conditional rendering in your React apps, these methods will undoubtedly set you on the right path.

With practice and exploration, you'll become adept at managing API interactions in your React applications. Happy coding!

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