Dropzone.js uploads only two files when autoProcessQueue set to false

Question

I use Dropzone.js and I want it to upload the dropped not automatically but when the user clicks a button. So I set the autoProcessQueue option to false. When the button is clicked the processQueue() method is called. I would suppose that now the full queue is processed. But thats not the case. Only the number of files which is specified in the parallelUploads option will be uploaded. The standard value of parallelUploads seems to be 2. Which every click 2 files are processed and uploaded.

Do I have to set parallelUploads to an very high number, for now to solve this?

Here's my full JS code:

var myDropzone = new Dropzone("div#myId", {
  url: "http://www.torrentplease.com/dropzone.php",
  addRemoveLinks: true,
  thumbnailWidth: "80",
  thumbnailHeight: "80",
  dictCancelUpload: "Cancel",
  autoProcessQueue: false
});

myDropzone.on("drop", function(event) {
  $('.edit_tooltip .option_bar').animate({
    opacity: 1,
    top: "-5"
  });
});


$('.edit_tooltip .option_bar .button').click(function() {
  myDropzone.processQueue();
});

Solution 1

There's a simple way to solve this which can be found here:

https://github.com/enyo/dropzone/issues/253#issuecomment-22184190

"If you want autoProcessQueue to be true after the first upload, then just listen to the processing event, and set this.options.autoProcessQueue = true; inside."

So just add

this.on("processing", function() {
    this.options.autoProcessQueue = true;
});

Solution 2

Add parallelUploads: 10(This is your max no)

Solution 3

My solution is:

// init dropzone with auto process queue false
var adPhotosDropzone = new Dropzone("#dropzone", {
    autoProcessQueue: false,
    parallelUploads: 3
});

$(document).on('click', '#btnUpload', function () {
    // enable auto process queue after uploading started
    adPhotosDropzone.options.autoProcessQueue = true;
    // queue processing
    adPhotosDropzone.processQueue();
});

// disable queue auto processing on upload complete
adPhotosDropzone.on("queuecomplete", function() {
    adPhotosDropzone.options.autoProcessQueue = false;
});

Solution 4

Very late but maybe it will help someone.

I noticed when I placed maxFilesSize above parallerUploads it didn't worked.

So sequence for options should be .

.
.
parallelUploads: 20,    
maxFilesize: 2, 
maxFiles: 20,
.
.

Solution 5

i used this dropzone with option (autoProcessQueue:false) and it does only upload 2 files instead of my whole files. And i found this workaround in the oligoil's answer at the git's issue

The Idea is very simple (bcs we want to upload the files one by one, remember the option! :D ).

It upload multiple but limited to 1, after one file is uploaded it trigger the next Queue!

Hope it help someone!

here's my code using that idea ( since i have 2 forms to upload, after all the images is uploaded it will submitting the other forms )

Dropzone.options.dropzoneForm = {
        paramName: "file", // The name that will be used to transfer the file
        autoProcessQueue: false,
        addRemoveLinks:true,
        parallelUploads : 1,
        maxFiles : 50,
        autoProcessQueue : false,
        autoQueue : true,
        dictDefaultMessage: "<strong>Drop files here or click to upload. </strong>",
        init: function () {
            ....

            this.on("complete", function (file) {
                if (this.getUploadingFiles().length === 0 && this.getQueuedFiles().length === 0) {
                    console.log("END ", this.getQueuedFiles().length);
                }
                else {
                    Dropzone.forElement("#dropzoneForm").processQueue();
                }
            });
        }
    };

View more solutions

Comments

[Artur Keyan]

Thank you very much! I spent half a day on solving this problem, and finally your answer helps me.

[tohster]

To be clear, this approach requires that the parallelUploads is set equal to or larger than maxFiles, otherwise if a user drops more than paralleluploads files, the last few may not get uploaded. Bianka's answer below seems more 'correct' in the sense that it allows parallelUploads to function independently of maxFiles, in the way it was designed.

[Andy]

Because I was using this from an external process to start the upload, here's what my code looked like: myDropzone.options.autoProcessQueue = true; I had the parraleleupload setting = 1, and this caused each file to upload 1 by 1. THANKS for the correct solution.

[Pete_Gore]

Not sure it's the best solution. Not if we want more than 10 files to be uploaded.

[gota]

This indeed makes that the files are uploaded sequentially, but now the action url is called for each individual file! In my example, with this solution, I receive as many emails as files. and this is not what I want! I would like that the files are uploaded sequentially and only after that, the action url is called. is it possible?

[Daniel Kim]

This worked for me, as I have an event that initiates the upload. It seems that setting autoProcessQueue=true just before processQueue() fixed the problem.