Problems with ajax

My setup is Windows 10, Wamp version 3.0.6 and Codeigniter 3.0.6. I am trying to use the Calendar class to generate a calendar that will permit content updating by clicking on a particular date. I am following an old tutorial by Burak Guzel (https://www.youtube.com/watch?v=qMsEAtXtE2g) who uses ajax. The calendar appearance on the page seems correct. My jquery code, copying his (apart from the csrf elements), is:

Code:

    $('.calendar .day').click(function() {

        var name = '<?php echo $this->security->get_csrf_token_name(); ?>'
        var hash = '<?php echo $this->security->get_csrf_hash(); ?>'

        day_num = $(this).find('.day_num').html();
        day_data = prompt('Enter stuff', $(this).find('.content').html());
        if (day_data != null) {
            $.ajax({
                url: window.location,
                type: 'post',
                data: {
                    day: day_num,
                    data: day_data,
                    name: hash
                },
                success: function(msg) {
                    location.reload();
                }
            });
        }
    });

The prompt appears correctly when I click on a date and Firefox developer tools console shows the POST with the correct url but with a 403 Forbidden error. I'm guessing this is a csrf issue but when I try to test this by setting 'csrf_protection' to FALSE the console shows no POST taking place at all. I'm also wondering whether Codeigniter 3 which I am using differs significantly in this respect from the version he was using and so the ajax code syntax is wrong?

Can anyone suggest what might be going on?

Between the debugger and the network panel, you should have all you need to figure this out.

When setting csrf_protection to FALSE, if there is no AJAX POST request, then what is there? JS errors?

Expert Website Development - Temecula, CA
Community Auth For CodeIgniter 3

When I turn off csrf, there appear to be no reported js errors. The console is blank

What do you see in the network panel? You may have to set logging to persist between page loads, but you should see some clues somewhere.

Expert Website Development - Temecula, CA
Community Auth For CodeIgniter 3

Now I am seeing a change when I turn off csrf. In the Console Net window, instead of '403 Forbidden' I'm getting '500 Internal Server Error'. There is still a csrf prob as I would obviously want to have it on but the server error is presumably on top of that. Is it perhaps an .htaccess issue? Here is my .htaccess code:

Code:

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$  index.php?/$1 [L]

Incidentally, this is only an ajax prob - I can still POST with a form.