Скачать или смотреть Resolving the 404 Not Found Error in Laravel 8

Learn how to fix the `404 Not Found` error in Laravel 8 when submitting forms. This guide will help you troubleshoot common issues with routing and form submissions.
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This video is based on the question https://stackoverflow.com/q/67426764/ asked by the user 'AyoubR' ( https://stackoverflow.com/u/15838087/ ) and on the answer https://stackoverflow.com/a/67428196/ provided by the user 'Hicham O'Sfh' ( https://stackoverflow.com/u/12335211/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting 404 Not Found Error in Laravel 8

When developing applications with Laravel 8, you may run into various issues, one of the most common being a 404 Not Found error when trying to submit a form. This problem can be frustrating, especially if you are just getting into Laravel. In this post, we will dive into how to resolve this issue and ensure that your forms are submitted successfully.

Understanding the Problem

In the provided scenario, a user attempts to insert data into the database via a form. Upon clicking the submit button, they encounter a 404 Not Found error. This typically means that the route they are trying to access does not exist or is not correctly defined.

Here is a brief overview of the elements involved:

Form Setup: The form is currently set to point to an action called add, but this may not correlate with the intended route.

Controller Methods: There are two methods in the controller: one for displaying the form and another for handling the submission.

Routes: The routes defined need to verify that they align correctly with the action in the form.

Solution Steps

Below, we'll break down the solution into organized sections to help you implement the changes effectively.

1. Update the Form Action

A key element in resolving the 404 Not Found error is ensuring the form's action points correctly to your route. Instead of just using add, you'll want to use the named route that corresponds with the add post method in your controller.

Replace your form action with the following code:

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

2. Ensure CSRF Token is Included

One common mistake that can lead to unexpected behavior, including false error messages, is not including the CSRF token. Laravel uses this token to prevent cross-site request forgery. Make sure to include it in all your forms with @ csrf as shown in the example above.

3. Review Your Routes

Check your routes to ensure they are correctly defined. Your routes should look something like this:

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

If you see a mismatch or any typos, fix them accordingly to ensure Laravel can route requests properly.

4. Test the Form Submission

After making the above changes, test your form again:

Navigate to the page containing your form.

Fill out the inputs and click the submit button.

If all steps are correctly implemented, you should no longer see the 404 Not Found error, and data should be processed as expected.

Conclusion

Encountering a 404 Not Found error when submitting a form in Laravel 8 can be a common hurdle, but with the right approach, it is easily fixable. By aligning your form action, including the CSRF token, and ensuring your routes are properly set up, you will be well on your way to creating a functional Laravel application.

If you face further challenges, don't hesitate to explore Laravel's documentation or community forums for more insights. Happy coding!