title: ajaxForm uploadProgress doesn't work with my upload method
body: <p>I know that there is many posts about this topic on stack overflow but none of them didn't helped me.</p>
  
  <p>I've tried some methods that I've found but none of them works. First is:</p>
  
  <pre><code>$(function() {
  
          var bar = $('#progress-bar');
  
          $('#uploadMedia').ajaxForm({
              beforeSend: function() {
                  var percentVal = '0%';
                  bar.width(percentVal);
              },
              uploadProgress: function(event, position, total, percentComplete) {
                  var percentVal = percentComplete + '%';
                  bar.width(percentVal);
              },
              complete: function(xhr) {
                  console.log('done' + xhr.responseText);
              }
          });
      });
  </code></pre>
  
  <p>I've set a 40mb video to upload but my progress bar fills in 1 second to 100%. I'm using laravel framework and I think that's maybe because my upload method starts with $user = Sentinel::getUser(); and that uploadProgress thinks that's it and set progress bar to 100%.</p>
  
  <p>I'm not very familiar with jquery, ajax.</p>
  
  <p>Thank you all in advance and best regards.  </p>