jQuery file uploader just sending one chunk

Question

I'm using the jQuery file uploader in my Django application.

I've got the problem that Django just receives one chunk of my big file. At first I thought that it might be an issue with my UploadFileHandler but when I log the chunksend event from the uploader it is just fired once (instead of 9 times in my case).

Any ideas why the uploader is just sending one chunk?

Here's my code:

$('#fileupload').fileupload({
            dataType: 'json',
            maxChunkSize: 10000000,
            add: function (e, data) {

                console.log(data);

                var uploadRow = $('#upload-item-master')
                                    .clone()
                                    .removeAttr('id')
                                    .appendTo("#upload-container")
                                    .hide()
                                    .fadeIn(1000);
                uploadRow.find('.name').text(data.files[0].name);                   

                var jqXHR = data.submit()
                        .always(function (result, textStatus, jqXHR) {
                             if(result.status == 201) {
                                uploadRow.find('.progress .bar').css('width','100%');
                                uploadRow.find('.progress').removeClass('active');
                             } else {
                                uploadRow.find('.progress .bar').css('width','100%');
                                uploadRow.find('.progress').removeClass('progress-success');
                                uploadRow.find('.progress').removeClass('progress-success');
                                uploadRow.find('.progress').addClass('progress-danger');
                             }
                        })
            },
            chunksend: function(e, data) {
                console.log("Chunk sent");
            },
            progress: function (e, data) {
                var progress = parseInt(data.loaded / data.total * 100, 10);

            }
        });

Answer 1

The solution is that the plugin needs a JSON ok, everything else will be interpreted als something bad and the next chunk is not sent.

With this code

return HttpResponse(json.dumps({ 'status': 201 }), content_type="application/json")

the plugin sends chunk by chunk to the server. Unfortunately the server - beside correct headers - interprets them as seperate files and creates one new file per chunk... I've created a new question fo the new problem here.