I work with dropzone:
<form action="#" class="dropzone"  ></form>
In the code js, the dropzone upload images only if a button with id=startUpload is clicked.
         Dropzone.autoDiscover = false;
        $(function() {
            var myDropzone = new Dropzone(".dropzone", {
                url: "upload_hotel_image.php",
                paramName: "file",
                maxFilesize: 20,
                maxFiles: 20,
                acceptedFiles: "image/*,
                autoProcessQueue: false,
            });      
          $(document).ready(function(){  
   $('#startUpload').click(function(){   
            myDropzone.processQueue();
       });
        });
              });
Now, how can i add more data to send with dropzone when images are uploaded, for exapmle,i need send description with every image uploaded.
 
    