How to include the CSRF token in the headers in Dropzone upload request?

I am working on a single page application and I am using Laravel 5 for the web service.

All forms are submitted asynchronously and I use a beforeSend on them to attach the CSRF token which I take from the meta tag like so:

$.ajax({
    url: '/whatever/route',
    type: 'POST',
    dataType: 'JSON',
    data: $('form#whatever-form').serialize(),
    beforeSend: function(request) {
        return request.setRequestHeader('X-CSRF-Token', $("meta[name='token']").attr('content'));
    },
    success: function(response){
        rivets.bind($('#whateverTag'), {whateverData: response});
    },
    error: function(response){
    }
});

All my forms work fine but dropzone upload doesn't. It gives me back a TokenMismatchException exception. Here is my dropzone code to update the profile photo:

$("#mydropzone").dropzone({
    url: "/profile/update-photo",
    addRemoveLinks : true,
    maxFilesize: 5,
    dictDefaultMessage: '<span class="text-center"><span class="font-lg visible-xs-block visible-sm-block visible-lg-block"><span class="font-lg"><i class="fa fa-caret-right text-danger"></i> Drop files <span class="font-xs">to upload</span></span><span>&nbsp&nbsp<h4 class="display-inline"> (Or Click)</h4></span>',
    dictResponseError: 'Error uploading file!'
});

I have tried putting the beforeSend in here too:

$("#mydropzone").dropzone({
    url: "/profile/update-photo",
    addRemoveLinks : true,
    maxFilesize: 5,
    dictDefaultMessage: '<span class="text-center"><span class="font-lg visible-xs-block visible-sm-block visible-lg-block"><span class="font-lg"><i class="fa fa-caret-right text-danger"></i> Drop files <span class="font-xs">to upload</span></span><span>&nbsp&nbsp<h4 class="display-inline"> (Or Click)</h4></span>',
    dictResponseError: 'Error uploading file!',
    beforeSend: function(request) {
        return request.setRequestHeader('X-CSRF-Token', $("meta[name='token']").attr('content'));
    },
});

I have also tried to put a global ajaxSetup in my main file like so:

$.ajaxSetup({
    headers: {
        'X-CSRF-TOKEN': $('meta[name="token"]').attr('content')
    }
});

It is still not working. What am I doing wrong? How can I pass the CSRF token in the header with the dropzone upload so as to not a get an exception?

Okay so this code is working just fine now:

$("#mydropzone").dropzone({
    url: "/profile/update-photo",
    addRemoveLinks : true,
    maxFilesize: 5,
    dictDefaultMessage: '<span class="text-center"><span class="font-lg visible-xs-block visible-sm-block visible-lg-block"><span class="font-lg"><i class="fa fa-caret-right text-danger"></i> Drop files <span class="font-xs">to upload</span></span><span>&nbsp&nbsp<h4 class="display-inline"> (Or Click)</h4></span>',
    dictResponseError: 'Error uploading file!',
    headers: {
        'X-CSRF-TOKEN': $('meta[name="token"]').attr('content')
    }
});

So basically I needed to add the X-CSRFToken in the header of the Dropzone request. Works like charm now.

You can add csrf token for every jquery ajax request within your application with these code.

$.ajaxSetup({
    headers: {
        'X-CSRF-Token': $('meta[name="_token"]').attr('content')
    }
});

This also works pretty well :

$("#mydropzone").dropzone({
  url: "/profile/update-photo",
  addRemoveLinks : true,
  maxFilesize: 5,
  dictResponseError: 'Error uploading file!',
  headers: {
    'X-CSRF-Token': $('input[name="authenticity_token"]').val()
  }
});

Dropzone.autoDiscover = false;
        // or disable for specific dropzone:
        // Dropzone.options.myDropzone = false;

        $(function () {
            // Now that the DOM is fully loaded, create the dropzone, and setup the
            // event listeners

            var myDropzone = new Dropzone("#my-awesome-dropzone");
            myDropzone.on("addedfile", function (file) {
                /* Maybe display some more file information on your page */
            });
            myDropzone.on("sending", function (file, xhr, formData) {
                 formData.append('csrfmiddlewaretoken', document.getElementsByName('csrfmiddlewaretoken')[0].value);
                /* Maybe display some more file information on your page */
            });
        });

You could include it this way.