How to get response from server in DropZoneJS?

Question

JavaScript

In php:
echo "ddddd";
or tried a million more options
in dropzone:

function(file,response){
                    console.log(response);
                    }

in console:

XHR finished loading: POST "http://domen.new/backend/portraits/upload-original".dropzone.js:1482 Dropzone.uploadFilesdropzone.js:1289 
Dropzone.processFilesdropzone.js:1275 
Dropzone.processFiledropzone.js:1268 
Dropzone.processQueuedropzone.js:1151 
(anonymous function)
create:891 undefined

Where did undefined come from? I need to return the string to the dropzone. I've been digging a hole for three hours now.

Answer 1

figured it out myself.
Instead of:

function(file,response){
                    console.log(response);
                    }

it should have been like this:

function(file){
                    console.log(file.xhr.response);
                    }

Answer 2

Dropzone has Event success
The file has been uploaded successfully. Gets the server response as second argument. (This event was called finished previously)

var myDropzone = new Dropzone("#my-dropzone");
  myDropzone.on("success", function(first,response) {
    /* Maybe display some more file information on your page */
  });

Here you need a response
Here is another found on stackoverflow.
stackoverflow.com/questions/19390471/dropzonejs-ho...
but be careful, version 4 of the dropzone has been pretty well rewritten.