Redirecting to login page when CSRF token is mismatch through ajax request using Backpack

[MuizShukri]

Handler.php

namespace App\Exceptions;

use Illuminate\Auth\AuthenticationException;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Illuminate\Session\TokenMismatchException;
use Throwable;

class Handler extends ExceptionHandler
{
    protected $dontReport = [
        // Add any exceptions you don't want to report here
    ];

    protected $dontFlash = [
        'current_password',
        'password',
        'password_confirmation',
    ];

    public function register()
    {
        $this->reportable(function (Throwable $e) {
            // Handle reportable exceptions here
        });
    }

    public function render($request, Throwable $e) {
        if ($e instanceof TokenMismatchException) {
            // Handle CSRF token expiration for AJAX requests
            if ($request->expectsJson()) {
                return response()->json([
                    'message' => 'CSRF token expired. Redirecting to login.',
                    'redirect' => route('backpack.auth.login'),
                ], 419);
            }

            // Redirect for non-AJAX requests
            return redirect()->route('backpack.auth.login')->withErrors(['csrf_error' => 'Your session has expired. Please log in again.']);
        }

        // Handle other exceptions normally
        return parent::render($request, $e);
    }
}

Ajax Request

$.ajax({
    url: '{{ route('getData') }}',
    type: 'POST',
    data: {
        _token: "{{ csrf_token() }}",
        data: data,  // Pass any data you're sending with the request
    },
    timeout: 60000,
    success: function (result) {
        // Handle successful response
    },
    error: function (xhr, status, error) {
        if (xhr.status === 419) {  // CSRF token expired
            const response = xhr.responseJSON;
            if (response) {
                alert('Session expired. Redirecting to login page...');
                window.location.href = response.redirect;  // Redirect to the login page
            } else {
                alert('Session expired. Please refresh the page.');
            }
        } else {
            console.error('Error in AJAX request: getData', status, error);
        }
    }
});

Is there any backpack function that can deliver the same result with these method?

[backpack-ai-bot[bot]]

Based on the knowledge sources provided, there isn't a specific Backpack function that directly delivers the same result as the custom Handler.php and Ajax request method you've described. However, Backpack does provide some built-in functionality to handle CSRF token mismatches and session expiration.

Here are some relevant points from the knowledge sources:

1. Backpack automatically handles CSRF token addition for DataTables ajax calls. This is done through a script in the common.js file Github Issue: 419 Page Expired.

2. When a session expires, Backpack should automatically redirect the user to the login page when they try to access a new page Github Issue: session timeout redirect login page.

3. For handling CSRF token mismatches and session expiration, it's recommended to check the APP_URL in the .env file and run php artisan basset:check to ensure assets are loading properly Github Issue: 419 page expired.

While these built-in features handle some aspects of CSRF token mismatches and session expiration, they may not provide the exact same functionality as your custom implementation, especially for Ajax requests.

If you need more specific control over the behavior, you might need to implement a custom solution similar to what you've shown. However, before doing so, it's recommended to:

1. Ensure your APP_URL is set correctly in the .env file.
2. Run php artisan basset:check to verify that all assets are loading correctly.
3. Check if the issue persists in an incognito window, as it might be a session-related problem 419 page expired after upgrading to backpack 6 (and Laravel 10).

If you still need custom handling after these checks, you might want to consider using Backpack's alert system to display messages. For example:

Alert::error('Session expired. Please log in again.')->flash();
return redirect()->route('backpack.auth.login');

This would display an error message when redirecting to the login page Redirect back with errors.

Remember that implementing custom exception handling might interfere with Backpack's built-in functionality, so it's important to test thoroughly if you decide to go this route.

ℹ️ Please note our AI Bot does not reply to follow-ups, this will be the only AI answer in this thread. If the AI helped you find the answer, please mark it as answered or write details below so it can learn. Then close the conversation. If not, please give more information for when a human reads this. ℹ️

Relevant sources:

Github Issue (closed): session timeout redirect login page
Is there a way to pass a route to js?
419 PAGE EXPIRED CSRF Token Error in laravel backpack
419 page expired
419 Page Expired
Github Issue (closed): Set session expiration time
419 ERROR
Github Issue (closed): token mismatch
Github Issue (closed): [Bug] 419 - Token Mismatch at ListOperation
Github Issue (closed): tokenmismatchexception problem
Redirect back with errors
Delete operation not working in backpack crud
Github Issue (closed): Model Issues in Laravel Version 6
419 page expired after upgrading to backpack 6 (and Laravel 10)
including the CSRF token in the request exception

[karandatwani92]

By default, Backpack pages show a 419 Modal on Ajax request if CSRF mismatch.

It seems that you are making this Ajax request on a custom page. There, you can check the status code and do whatever you want.

Let me know if I could not answer your question or if I misunderstood it.

[MuizShukri]

I see, i can just access the status code directly from the xhr. I don't really need to custom the response at the handler.php. thanks for the help :D