I'm using dropzone.js, and trying to figure out how can I throw an error BEFORE the file is shown in the dropzone UI.
Dropzone.autoDiscover = false;
var myDropzone = new Dropzone("#fileUpload", { url: "/myUrl/file", maxFiles: 1, maxFilesize: 2,
accept: function(file, done) {
var splitFileName = file.name.split(".");
if (splitFileName[splitFileName.length - 1] != "bbb") {
done("Error! Files of this type are not accepted");
}
else { done(); }
}
});
myDropzone.options.acceptedFiles = '.bbb';
Suppose the user drags a file that is not with .bbb extension, then the file is still shown in the dropzone (with an 'X' sign).
Is it possible not to show that file in the dropzone, and even show a relevant error ?
I figured out you can use the helpful removeFile method with addedfile event to easily achieve this kind of functionality.
myDropzone.on("addedfile", function(file) {
});
Inside this handler, you can remove files with .bbb extensions and set any kind of behavior you wish.
I've looked around and none of the other similar posts have helped me. I have built an AJAx based form in Yii 2 and jQuery and it seems it submits the form twice.
My form:
$form = ActiveForm::begin([
'id' => 'company_form',
'ajaxDataType' => 'json',
'ajaxParam' => 'ajax',
'enableClientValidation' => false
]);
My JS code:
$(document).ready(function() {
/* Processes the company signup request */
$('#company_form').submit(function() {
signup('company');
return false;
});
})
function signup(type) {
var url;
// Set file to get results from..
switch (type) {
case 'company':
url = '/site/company-signup';
break;
case 'client':
url = '/site/client-signup';
break;
}
// Set parameters
var dataObject = $('#company_form').serialize();
// Run request
getAjaxData(url, dataObject, 'POST', 'json')
.done(function(response) {
//.........
})
.fail(function() {
//.....
});
// End
}
Shouldn't the standard submit be stopped by me putting the return: false; in the javascript code?
Why is it submitting twice?
More Info: However the strange thing is, that only appears to happen the first time; if I hit submit again it only submits once; but if I reload the page and hit submit it will do it twice again.
You may need to change your code like below:
$('#company_form').submit(function(e) {
e.preventDefault();
e.stopImmediatePropagation();
signup('company');
return false;
});
http://api.jquery.com/event.stoppropagation/
http://api.jquery.com/event.stopimmediatepropagation/
Solution common
Next JS will works with any state of 'enableClientValidation':
$('#company_form').on('beforeSubmit', function (e) {
signup('company');
return false;
});
https://yii2-cookbook.readthedocs.io/forms-activeform-js/#using-events
I need to check overall progress of the Jquery file upload
I'm allowing my users to upload multiple files, Now I want to know what all the files are completed then I need to trigger a function to do some other work.
I tried all the callbacks but couldn't figure it out.
I even tried this
var activeUploads = $('.new_photographer').fileupload('active');
But its variable is returning some garbage data.
Here's my jquery:
$('.new_photographer').fileupload({
dataType :'json',
fileInput: $(this).find('input:file'),
acceptFileTypes: /(\.|\/)(gif|jpeg|png|jpg)$/i,
dropZone: $(this).find('#dropzone'),
complete : function (e, data) {
var activeUploads = $('.new_photographer').fileupload('active');
var overallProgress = $('.new_photographer').fileupload('progress');
alert(JSON.stringify(activeUploads));
//alert('overallProgress :: '+JSON.stringify(overallProgress));
if ( activeUploads < 0){
window.location.replace("http://stackoverflow.com");
}
}
}).bind('fileuploadsubmit', function (e, data) {
var inputs = data.context.find(':input');
data.formData = inputs.serializeArray();
});
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();
});
Add parallelUploads: 10(This is your max no)
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;
});
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;
});
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,
.
.
Add overdrive two event like
processing -> Allow upload all file
queuecomplete -> Return to normal
init: function () {
this.on("queuecomplete", function () {
this.options.autoProcessQueue = false;
});
this.on("processing", function () {
this.options.autoProcessQueue = true;
});
};
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();
}
});
}
};
If you dont want to set maxFiles (default no limit) and use parallelUploads with the value you want. Read this!
I have solved the problem behaviour by setting
autoQueue: false,
autoProcessQueue: true,
Then when I want to upload the files I just add them to the queue with:
myDrop.enqueueFile(file)
But, this method just accept one file, for multiple files I'am using:
myDrop.on("addedfiles", function(files){
//wait confirmation, or do some processing with the files, then:
files.forEach(function(file){
myDrop.enqueueFile(file)
})
}
Note that "addedfiles" event it's not in the documentation yet. I captures all files dragged into the dropzone or added by the click event.
This is good because if you are using "sending" event to add POST data, or "parallelUploads" the sample code works fine and don't mess with the next files. I am using Sweet Alert 2 to ask for some tags before uploading the images.
I think that you can allow uploadMultiple and change dropzone.js file.
First, allow uploadMultiple
Next, change this line code into dropzone.js:
return this.processFiles(queuedFiles.slice(0, parallelUploads - processingLength));
for
return this.processFiles(queuedFiles.slice(0, queuedFiles.length));
A bit late, but I wasn't happy with the other answers, so here's mine.
Changing autoProcessingQueue (even temporarily) after clicking send mean that if you add another file to the dropzone while other are still queued, it will get uploaded without you having to press send again, which I didn't want. And I didn't want to use a setTimeout or a busyloop either. So here's how to do it without either :
Modify the dropzone.js file. First, in the Dropzone function, you need to add a second file array to store the queue when send is pressed :
function Dropzone(element, options) {
...
this.files = [];
this.files2 = [];
Then, save the files to it when send is clicked by modifying processQueue
Dropzone.prototype.processQueue = function() {
this.files2 = this.getQueuedFiles();
...
Finally, edit the _finished function so that when a file is done uploading, another file get sent if there was still remaining ones in the queue when send was pressed:
Dropzone.prototype._finished = function(files, responseText, e) {
var file, _i, _len;
for (_i = 0, _len = files.length; _i < _len; _i++) {
file = files[_i];
file.status = Dropzone.SUCCESS;
this.emit("success", file, responseText, e);
this.emit("complete", file);
this.files2 = this.files2.filter(function(e) { return e.status == "queued" }); // Remove the files that are finished or already being uploaded
}
if (this.options.uploadMultiple) {
this.emit("successmultiple", files, responseText, e);
this.emit("completemultiple", files);
}
if (this.options.autoProcessQueue) {
return this.processQueue();
}
else {
if (typeof this.files2 != "undefined" && this.files2.length > 0) {
this.processFiles(this.files2.slice(0,1)); // process the next file if there's one
}
}
};
This solved it for me, without changing any dropzone.js code or voiding the parallelUploads setting.
$('#submit').click(function(e){
e.preventDefault();
function tryQueue(){
var numQueued=dz.getQueuedFiles().length;
var numFiles=numQueued+dz.getUploadingFiles().length;
if(numQueued>0){
dz.processQueue();
}
if(numFiles>0){
setTimeout(tryQueue,1000);
}
else window.location='/'; //redirect when finished
}
tryQueue();
});
This assumes that dz is the dropzone instance. It works by invoking processQueue until all have been uploaded. The logic in processQueue takes care of returning if nothing needs to be done so no harm in the polling.
I have form autocomplete code that executes when value changes in one textbox. It looks like this:
$('#myTextBoxId)').change(function () {
var caller = $(this);
var ajaxurl = '#Url.Action("Autocomplete", "Ajax")';
var postData = { myvalue: $(caller).val() }
executeAfterCurrentAjax(function () {
//alert("executing after ajax");
if ($(caller).valid()) {
//alert("field is valid");
$.ajax({ type: 'POST',
url: ajaxurl,
data: postData,
success: function (data) {
//some code that handles ajax call result to update form
}
});
}
});
});
As this form field (myTextBoxId) has remote validator, I have made this function:
function executeAfterCurrentAjax(callback) {
if (ajaxCounter > 0) {
setTimeout(function () { executeAfterCurrentAjax(callback); }, 100);
}
else {
callback();
}
}
This function enables me to execute this autocomplete call after remote validation has ended, resulting in autocomplete only when textbox has valid value. ajaxCounter variable is global, and its value is set in global ajax events:
$(document).ajaxStart(function () {
ajaxCounter++;
});
$(document).ajaxComplete(function () {
ajaxCounter--;
if (ajaxCounter <= 0) {
ajaxCounter = 0;
}
});
My problem is in IE (9), and it occurs only when I normally use my form. Problem is that function body inside executeAfterCurrentAjax(function () {...}); sometimes does not execute for some reason. If I uncomment any of two alerts, everything works every time, but if not, ajax call is most of the time not made (I checked this by debugging on server). If I open developer tools and try to capture network or debug javascript everything works as it should.
It seems that problem occurs when field loses focus in the same moment when remote validation request is complete. What I think it happens then is callback function in executeAfterCurrentAjaxCall is executed immediately, and in that moment jquery validation response is not finished yet, so $(caller).valid() returns false. I still do not know how alert("field is valid") helps in that scenario, and that could be sign that I'm wrong and something else is happening. However, changing executeAfterCurrentAjaxCall so it looks like this seems to solve my problem:
function executeAfterCurrentAjax(callback) {
if (ajaxCounter > 0) {
setTimeout(function () { executeAfterCurrentAjax(callback); }, 100);
}
else {
setTimeout(callback, 10);
}
}