Send custom data with dropzone.js on each File Upload

Question

I am using dropzone in my Code Igniter Project.

With every drag of a file, dropzone creates an ajax request and my files is getting stored on the server too. But now

Answer 1

I got it. This is what I had to use

myDropzone.on('sending', function(file, xhr, formData){
    formData.append('userName', 'bob');
});