title: Blueimp file upload one request - files not being sent
body: <p>I have a form that allows file uploads in various fields that are dynamically added to the form. I'm using Blueimp's jQuery file upload plugin. I'm trying to have multiple files be sent in one request. I do not want multiple requests to be sent. When I submit the form, the files to be uploaded are not included in the request. I'm maintaining them in a filesList array in the add method and making sure to override existing values. Then I use the send option to send the files. Though, they are not included in the ajax post. What am I missing? I've seen others online try to accomplish this. However, I have not found a solid working example. Below is my code:</p>
  
  <pre><code>  var fileList = [],
      exists = false;
  
  $form.fileupload({
      autoUpload: false,
      singleFileUpload: false,
      url: '/handler.php',
      add: function(e, data) {
          exists = false;
          for(var i = 0, len = filesList.length; i &lt; len; i++) {
              if(filesList[i].paramName === data.paramName) {
                  // file already exists for this param, replace it
                  exists = true;
                  filesList[i] = data;
                  break;
              }
          }
  
          // no file exists for this param, add it to array
          if(!exists) {
              filesList.push(data);
          }
  
          $form.off('submit').one('submit', function(e) {
              $form.fileupload('send', {
                  files: filesList
              });
  
              return false;
          });
      }
  })
  </code></pre>