Скачать или смотреть How to Hide Spinner or Loader When API Call is Rejected in React and Redux Toolkit

Learn how to effectively hide a spinner in your React application when an API call is rejected, using Redux Toolkit. This guide walks you through understanding state management and conditional rendering.
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How to Hide Spinner or Loader When API Call is Rejected in React and Redux Toolkit

In today's guide, we dive into a common issue many developers face while working with React and Redux Toolkit: hiding a spinner or loader when an API call fails. As we know, implementing an engaging user interface requires handling various states, like loading, success, and error. Let's dissect the problem and present a neat solution!

Understanding the Problem

In a typical React application that utilizes Redux Toolkit, you'll often need to show a loading spinner while an API call is in progress. However, once the call is rejected due to an error, the spinner shouldn't remain visible. In the case described, the spinner continued to display even after the API call was rejected, causing confusion.

Scenario Overview

Current State Management: The component checks for a isLoading state to decide whether to display the spinner.

The Flaw: When the API call fails, the isLoading state is correctly set to false, but other components (like the Loading component) still display the spinner.

Breaking Down the Solution

To resolve this issue, we’ll need to adjust both our Redux slice and the loading/error component to ensure that the spinner hides correctly when an error occurs.

Step 1: Adjust the TopMenuSlice

First, we need to make sure we’re managing the state properly in our slice. Here’s the revised state management logic:

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

Step 2: Update the Error Component

Next, we need to ensure our error component checks whether there's an error before displaying the spinner. Modify the error handling in your Error component as follows:

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

Step 3: Refine the Loading Component Logic

Your Loading component should focus on displaying the loading UI without incorporating checks for error states. Here's how you might refine it:

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

Conclusion

By adjusting the state management in your Redux slice and refining how your components react to loading and error states, you can easily hide your spinner when an API call is rejected. This enhances user experience by providing timely feedback on the state of their requests.

Whether you're a novice or an experienced developer, understanding how to manage loading states effectively is crucial in building smooth and interactive applications. Happy coding!