How to customize error pages in Laravel

Laravel is a popular PHP framework that provides rich features and powerful support, providing a perfect solution for quickly building web applications. However, even with the best code quality, errors and exceptions will always occur. In the event of an error, your application needs to display a friendly error page to tell the user what exactly happened. Laravel provides a solution that can help us achieve this goal. Let me show you how to customize error pages in Laravel.

Laravel default error page

In Laravel, when the application encounters an error or exception, a default error page will be displayed.

Although this page can tell the user that an error has occurred, it is not very user-friendly because it looks simple and is not personalized enough to provide the user with more information about the error. Fortunately we can do this by customizing the error page.

Create a custom error page

To create a custom error page in Laravel, we need to follow the following steps:

Step 1: Create a template

We need to first create a template for the custom error page. We can create an errors folder within our application views folder that contains the error view files. In this folder, we can create a 400.blade.php file, which will be used to handle 400 errors.

For convenience, we can create a custom error page based on the default Laravel error page to get the same structure and style as the default page. You can get the default Laravel error page by executing the following command:

php artisan vendor:publish --tag=laravel-errors

This command will copy Laravel's default error view to a specified location in our application. We can find these files through the resources/views/errors folder.

Step Two: Configure Error Handler

Once we have created our custom error page templates, we need to tell Laravel how to use them. To do this, we need to register our custom error handler in our app/Exceptions/Handler.php file.

Open the app/Exceptions/Handler.php file and find the following method:

public function render($request, Throwable $exception)
{
    return parent::render($request, $exception);
}

The easiest solution is to add a switch in this method Conditions, return views for our custom error views based on different error codes. For example, if we want to customize the error view for the 400 error code, we can add the following code:

public function render($request, Throwable $exception)
{
    switch ($exception->status) {
        case 400:
            return response()->view('errors.400', [], 400);
        break;
        default:
            return parent::render($request, $exception);
        break;
    }
}

This method uses Laravel's response() function to add our custom error view Returned to the user, if the status code is not 400, the default parent::render() method is called.

We can also add other error views as needed. For example, to add a common custom error view for all errors, we could add the following code:

public function render($request, Throwable $exception)
{
     if ($this->isHttpException($exception)) {
         switch ($exception->getStatusCode()) {
             case 400:
                 return response()->view('errors.400', [], 400);
                 break;
             case 404:
                 return response()->view('errors.404', [], 404);
                 break;
             case 500:
                 return response()->view('errors.500', [], 500);
                 break;
             default:
                 return $this->renderHttpException($exception);
                 break;
         }
     }
     return parent::render($request, $exception);
}

This will return a custom error view that matches the status code.

Conclusion

In this article, we learned how to create custom error pages in Laravel. We learned how to create error view templates and register these views in the application's handlers. Now when we have an error, we can provide users with more friendly information to help them better understand the problem, thereby improving the user experience of our application.

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