drag and drop

Js.
:javascript
  Dropzone.autoDiscover = false;
  $("#dropzone").dropzone({
    url: "#{upload_url}",
    success : function(file, response){
        console.log(file);
        console.log(response);
        window.location = "#{upload_url}"
    }
  });

form in class
 class: 'dropzone', id: 'dropzone'



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