Solving CORS Issues When Sending a GET HTTP Request with Axios from React to Laravel 10 Backend

Описание: Learn how to send GET HTTP requests using Axios in a React application to a Laravel backend without running into CORS issues. Understand the solutions for ensuring proper cross-origin resource sharing in your application.
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How to Send a GET HTTP Request with Axios from React to Laravel 10 Backend

If you’re developing a web application using React and Laravel, you might run into a common issue known as Cross-Origin Resource Sharing (CORS). This happens when your front-end application (running at one origin, such as http://localhost:3000) tries to access resources from a back-end server (like your Laravel app at http://localhost/todo/laravel/public/api/test). Unfortunately, if proper CORS settings aren't configured in your Laravel application, you may encounter errors that can hamper your development workflow.

In this guide, we’ll explore how to send a GET HTTP request using Axios and fix the CORS issue so you can successfully communicate between your React and Laravel applications.

The CORS Problem

While developing a React app that communicates with a Laravel backend, you might face the following error:

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This error indicates that the Laravel server is not configured to allow requests from your React app’s origin. When making HTTP requests across different origins, it is essential for servers to support CORS, which allows or denies those requests based on the specified configurations.

Example Code Overview

To illustrate the problem, here’s a snippet of code from your React application where you’re trying to fetch data:

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And here’s a simple function in your Laravel controller that returns a list of todos:

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You see that you're attempting to fetch data from the Laravel API endpoint, but the absence of the 'Access-Control-Allow-Origin' header results in the CORS error.

The Solution: Configuring CORS in Laravel

To resolve the CORS issue, you need to update your Laravel application's CORS settings. Here's how you can approach it:

Step 1: Update CORS Configuration

Open the cors.php configuration file located in the config directory of your Laravel application.

Modify the 'paths' setting to specifically include your API routes. Instead of allowing all paths (['*']), it could be beneficial to restrict it:

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Ensure that your 'allowed_origins' are properly set to allow requests from your React application:

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Here’s the Updated CORS Configuration Example

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Step 2: Clear Cached Configurations

Whenever you make changes to your configuration files in a Laravel application, it’s a good practice to clear the cache. You can do this by running the following command from the root of your Laravel project:

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Step 3: Testing Your Setup

Restart your Laravel backend server.

Try sending the GET request again from your React application. If everything is set up correctly, you should no longer see the CORS error, and your data from the Laravel API should be logged successfully in the console.

Conclusion

CORS issues can be a frustrating barrier while developing applications that involve multiple technologies like React and Laravel. However, with the appropriate configuration in your Laravel application, you can enable successful cross-origin requests and streamline your development process. By following the steps in this guide, you can ensure your local development environment is set up correctly, allowing your React app to communicate seamlessly with your Laravel backend.

If you continue to face issues, make sure to double-check your CORS configurations an