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How to upload excel file to server with kendo ui

i am trying to upload an excel file to my server with kendo ui but nothing happens.The problem is in js on var upload as the #kupload is null and i dont know why
<div class="form-group">
<label for="kUpload">Select File for Upload </label>
<input type="file" id="kUpload"/>
</div>
Upload
$(document).ready(function ()
{ $("#btn-kUpload").on("click", function (e) {
e.preventDefault();
var formData = new FormData();
var upload = $("#kUpload").getKendoUpload();
var files = upload.getFiles();
formData.append('files', files[0].rawFile);
// Send the request
$.ajax({
url: 'test.aspx/ImportExcel',
type: 'POST',
data: formData,
cache: false,
contentType: false,
processData: false,
success: function (response) {
console.log(response);
}
});
});

You don't need to use ajax if you are using kendo components, kendo upload has built-in ajax request for sending files to the server.
NOTE: Generally every kendo component that communicates with server-side has own ajax function so you don't need to use $.ajax
You only need to define saveUrl:
<input name="files" id="files" type="file" aria-label="files"/>
$('#files').kendoUpload({
async: {
saveUrl: 'test.aspx/ImportExcel'
},
dropZone: '.drop-zone',
multiple: true,
clear: function () {
},
complete: function(){
//This is called when all files are uploaded
},
success: function() {
//This is called for every uploaded file
},
error: function () {
},
localization: {
select: 'Upload file...'
}
});
Offical example: Upload component
Check documentation: Kendo UI Upload

Dropzone.js 5.0 - use existing images and send the data to the server

I have successfully used Dropzone to display existing files from my server. However, when I submit the form, only new files are submitted to the server, so I don't know if the user has deleted any. Essentiall I want to send the data for all the files currently displayed, including the 'mocked' files and the newly uploaded ones.
I am using autoProcessQueue: false so that I can have a separate submit button to send the data to the server.
My Code:
Dropzone.options.createListingForm = {
autoProcessQueue: false,
uploadMultiple: true,
previewsContainer: '.create-listing-form-uploads',
parallelUploads: 100,
maxFiles: 100,
addRemoveLinks: true,
init: function () {
var thisDropzone = this;
var photos = form.data('photos');
$.each(photos, function (key, photo) {
var mockFile = {
name: photo.name,
size: photo.size,
type: photo.type,
accepted: true
};
thisDropzone.files.push(mockFile); // add to files array
thisDropzone.emit("addedfile", mockFile);
thisDropzone.emit("thumbnail", mockFile, photo.path);
thisDropzone.emit("complete", mockFile);
});
}
};
form.on('click', '.create-listing-form-save-photos', function () {
$('.dropzone').get(0).dropzone.processQueue();
return false;
});
Thanks to this answer for the first part of my code:
https://stackoverflow.com/a/45701181/5482719

Each time a file (including mock Files) is removed/deleted from the dropzone, the removedfile event is fired.
You could use this event to delete the removed file from your server as follows:
myDropzone.on("removedfile", function(file) {
// 'file' parameter contains the file object.
console.log('Removed File', file);
// Delete file from server
$.ajax({
type: 'POST',
url: 'url/that/handles/delete',
data: {
fileName: file.name,
},
dataType: 'json'
}).done(function (response) {
// check repsonse, notify user
}).fail(function(resp) {
console.log('xhr failed', resp);
}).always(function(resp) {
// do nothing for now
});
});
Hope that helps.

Send custom data with dropzone.js on each File Upload

I am using dropzone in my Code Igniter Project.
With every drag of a file, dropzone creates an ajax request and my files is getting stored on the server too. But now, my requirement is that I want to send additional data (DYNAMIC) alongside the file.
With the use of params, Only static datas can be sent, but the data I want to send will be changing everytime.
This is how my code looks:
<script>
Dropzone.autoDiscover = false;
Dropzone.options.attachment = {
init: function(){
this.on('removedfile',function(file){
// console.log('akjsdhaksj');
var fileName = file.name;
$.ajax({
type: 'POST',
url: "<?php echo BASE_URL.'index.php/admin/mail_actions/deleteFile' ?>",
data: "id="+fileName,
dataType: 'html'
});
});
},
// params: {
// customerFolder: $('#toValue').substr(0, toValue.indexOf('#')),
// },
dictDefaultMessage:"Click / Drop here to upload files",
addRemoveLinks: true,
dictRemoveFile:"Remove",
maxFiles:3,
maxFilesize:8,
}
$(function(){
var uploadFilePath = "<?php echo BASE_URL.'index.php/admin/mail_actions/uploadFile' ?>";
var myDropzone = new Dropzone("div#attachment", { url: uploadFilePath});
});
</script>
Anyway I can achieve it?

I got it.
This is what I had to use
myDropzone.on('sending', function(file, xhr, formData){
formData.append('userName', 'bob');
});

Abhinav has the right and working answer I only want to give a second option to use it in the options object (for example if you have multiple Dropzone sections on one page.)
myDropzone.options.dropzoneDivID = {
sending: function(file, xhr, formData){
formData.append('userName', 'Bob');
}
};

In case you have a nested payload object - e.g. to add a name to your file and your api only accepts something like this
{
someParameter: {
image: <my-upload-file>,
name: 'Bob'
}
}
your dropzone setup would look like this
var myDropzone = new Dropzone("div#attachment", {
url: uploadFilePath,
paramName: 'someParameter[image]'
});
myDropzone.on('sending', function(file, xhr, formData){
formData.append('someParameter[image]', file);
formData.append('someParameter[userName]', 'bob');
});
I only added this as there was no example for nested parameters documented since now.

i was using JQuery and this is how worked for me :
$("#dZUpload").dropzone({
url: "ajax/upload_img_ben.php",
success: function (file, response) {
var imgName = response;
file.previewElement.classList.add("dz-success");
console.log("Successfully uploaded :" + imgName);
},
error: function (file, response) {
file.previewElement.classList.add("dz-error");
},
sending: function(file, xhr, formData){
formData.append('id', '5');
}
});

Shouldn't a change event on collection also fire a change event on the model?

When I run add on my collection:
this.children.add(newData,{merge:true});
The change event for the collection fires and tells me the model that has changed. However, that model that has changed does not fire a change event. I would think that if the model changed it would fire a change event.
In the individual item view I have (ChildView.js):
initalize: function(){
this.listenTo(this.model, 'change',this.render);
},
And in the View for all the items I have (ChildrenView.js):
this.listenTo(this.children, 'change', this.changed);
So this.changed DOES fire. But the model in question does not fire a change event
I am doing an ajax file upload so for lack of a better way right now I am just using an ajax call to upload the file (See the success function where it sets the collection):
getFile:function(e){
e.preventDefault();
var that = this;
var collChildren = this.children;
console.log('this',this);
console.log(this.children);
var file = e.target.files[0];
var formData = new FormData($('#upload-child-pic-form')[0]);
console.log(this,'currentUploadU',this.currentUpload);
formData.append('child_id',this.currentUpload);
$.ajax({
url: '/x/children/upload/', //Server script to process data
type: 'POST',
xhr: function() { // Custom XMLHttpRequest
var myXhr = $.ajaxSettings.xhr();
if(myXhr.upload){ // Check if upload property exists
myXhr.upload.addEventListener('progress',function(data){
$("#upload-child-pic-progress").val(data.position / data.totalSize * 100);
}, false); // For handling the progress of the upload
}
return myXhr;
},
//Ajax events
beforeSend: function(data){
$("#upload-child-pic-progress").removeClass('hide');
},
success: function(data){
$("#upload-child-pic-progress").addClass('hide');
$("#add-child-profile-pics-modal").modal('hide');
var newData = $.parseJSON(data);
collChildren.add(newData,{merge:true});
},
error: function(data){
console.log('error',data);
},
// Form data
data: formData,
//Options to tell jQuery not to process data or worry about content-type.
cache: false,
contentType: false,
processData: false
});
},
Here is my Single Child View
define([
'jquery',
'underscore',
'backbone',
'text!templates/children/child.html'
], function($,_,Backbone,childTemplate){
var ChildView = Backbone.View.extend({
tagName: 'li',
events: {
'click .pic-settings' : 'picSettingsClicked',
},
template: _.template(childTemplate),
initalize: function(){
this.listenTo(this.model, 'change',this.render);
},
picSettingsClicked: function(e){
e.preventDefault();
Backbone.pubsub.trigger('picSettingClick',this.model.get('id'));
},
render: function(){
console.log('changing',this.model,this.model.get('photo'),this.model.get('first_name'));
this.$el.addClass('child').html(this.template(this.model.toJSON()));
return this;
}
});
return ChildView;
});

Dropzone.js- How to delete files from server?

I am using dropzone.js.
When I try to delete files only the thumbnails get deleted but not the files from server.
I tried some ways but it just gives me the name of the image which was on client side and not the name on server side(both names are different, storing names in encrypted form).
Any help would be much appreciated..

Another way,
Get response from your server in JSON format or a plain string (then use only response instead of response.path),
dropzone.on("success", function(file, response) {
$(file.previewTemplate).append('<span class="server_file">'+response.path+'</span>');
});
Here, the server can return a json like this,
{
status: 200,
path: "/home/user/anything.txt"
}
So we are storing this path into a span that we can access when we are going to delete it.
dropzone.on("removedfile", function(file) {
var server_file = $(file.previewTemplate).children('.server_file').text();
alert(server_file);
// Do a post request and pass this path and use server-side language to delete the file
$.post("delete.php", { file_to_be_deleted: server_file } );
});
After the process, the preview template will be deleted by Dropzone along with file path stored in a span.

The way I handle this, is after each file is uploaded and stored on the server, I echo back the name I give the file on my server, and store it in a JS object, something like this:
PHP:
move_uploaded_file($_FILES['file']['tmp_name'], $newFileName);
echo $newFileName;
JS:
dropZone.on("success", function(file, serverFileName) {
fileList[serverFileName] = {"serverFileName" : serverFileName, "fileName" : file.name };
});
With this, you can then write a delete script in PHP that takes in the "serverFileName" and does the actual deletion, such as:
JS:
$.ajax({
url: "upload/delete_temp_files.php",
type: "POST",
data: { "fileList" : JSON.stringify(fileList) }
});
PHP:
$fileList = json_decode($_POST['fileList']);
for($i = 0; $i < sizeof($fileList); $i++)
{
unlink(basename($fileList[$i]));
}

Most simple way
JS file,this script will run when you click delete button
this.on("removedfile", function(file) {
alert(file.name);
$.ajax({
url: "uploads/delete.php",
type: "POST",
data: { 'name': file.name}
});
});
php file "delete.php"
<?php
$t= $_POST['name'];
echo $t;
unlink($t);
?>

The file will be deleteed when you click the "Remove" button :
Put this on your JS file or your HTML file (or your PHP view/action file):
<script type="text/javascript">
Dropzone.options.myAwesomeDropzone = {
// Change following configuration below as you need there bro
autoProcessQueue: true,
uploadMultiple: true,
parallelUploads: 2,
maxFiles: 10,
maxFilesize: 5,
addRemoveLinks: true,
dictRemoveFile: "Remove",
dictDefaultMessage: "<h3 class='sbold'>Drop files here or click to upload document(s)<h3>",
acceptedFiles: ".xls,.xlsx,.doc,.docx",
//another of your configurations..and so on...and so on...
init: function() {
this.on("removedfile", function(file) {
alert("Delete this file?");
$.ajax({
url: '/delete.php?filetodelete='+file.name,
type: "POST",
data: { 'filetodelete': file.name}
});
});
}}
</script>
..and Put this code in your PHP file :
<?php
$toDelete= $_POST['filetodelete'];
unlink("{$_SERVER['DOCUMENT_ROOT']}/*this-is-the-folder-which-you-put-the-file-uploaded*/{$toDelete}");
die;
?>
Hope this helps you bro :)

I've made it easier, just added new property serverFileName to the file object:
success: function(file, response) {
file.serverFileName = response.file_name;
},
removedfile: function (file, data) {
$.ajax({
type:'POST',
url:'/deleteFile',
data : {"file_name" : file.serverFileName},
success : function (data) {
}
});
}

success: function(file, serverFileName)
{
fileList['serverFileName'] = {"serverFileName" : serverFileName, "fileName" : file.name };
alert(file.name);
alert(serverFileName);
},
removedfile: function(file, serverFileName)
{
fileList['serverFileName'] = {"serverFileName" : serverFileName, "fileName" : file.name };
alert(file.name);
alert(serverFileName);
}

When you save the image in upload from there you have to return new file name :
echo json_encode(array("Filename" => "New File Name"));
And in dropzone.js file :
success: function(file,response) {
obj = JSON.parse(response);
file.previewElement.id = obj.Filename;
if (file.previewElement) {
return file.previewElement.classList.add("dz-success");
}
},
And when the dropzone is initialize..
init: function() {
this.on("removedfile", function(file) {
var name = file.previewElement.id;
$.ajax({
url: "post URL",
type: "POST",
data: { 'name': name}
});
});
return noop;
},
Now you will receive new image file and you can delete it from server

You can add id number of uploaded file on the mockFile and use that id to delete from server.
Dropzone.options.frmFilesDropzone = {
init: function() {
var _this = this;
this.on("removedfile", function(file) {
console.log(file.id); // use file.id to delete file on the server
});
$.ajax({
type: "GET",
url: "/server/images",
success: function(response) {
if(response.status=="ok"){
$.each(response.data, function(key,value) {
var mockFile = {id:value.id,name: value.name, size: value.filesize};
_this.options.addedfile.call(_this, mockFile);
_this.options.thumbnail.call(_this, mockFile, "/media/images/"+value.name);
_this.options.complete.call(_this, mockFile);
_this.options.success.call(_this, mockFile);
});
}
}
});
Server Json return for getting all images already uploaded /server/images:
{
"data":[
{"id":52,"name":"image_1.jpg","filesize":1234},
{"id":53,"name":"image_2.jpg","filesize":1234},
]}

In my case server sends back some ajax response with deleteUrl for every specific image.
I just insert this url as 'data-dz-remove' attribute, set in previewTemplate already.
As I use jquery it looks so:
this.on("success", function (file, response) {
$(file.previewTemplate).find('a.dz-remove').attr('data-dz-remove', response.deleteUrl);
});
Later this attr used to send ajax post with this url to delete file on server by removedfile event as mentioned above.

This simple solution will work for single files upload, no need for DOM manipulation.
PHP Upload Script
[...]
echo $filepath; // ie: 'medias/articles/m/y/a/my_article/my-image.png'
JS Dropzones
this.on("success", function(file, response) {
file.path = response; // We create a new 'path' index
});
this.on("removedfile", function(file) {
removeFile(file.path)
});
JS outside of Dropzone
var removeFile = function(path){
//SEND PATH IN AJAX TO PHP DELETE SCRIPT
$.ajax({
url: "uploads/delete.php",
type: "POST",
data: { 'path': path}
});
}