I'm building an HTML form using Jquery to send the data to a PHP backend. It is supposed to allow for multiple attachments, which are then sent via fetch. I'm receiving the $_POST fine, but $_FILES only contains the last file selected.
I know this is because the multiple attribute resets every time a new file picker window is opened, but I it to save each file as it is selected. To address this, I'm trying to capture each file in a JS array, appending the array to FormData before it posts to the server.
$(document).ready(function(e){
// Add input files to array
$('#inputId').on('change', function(e) {
fileList.push(fileName[0]);
});
// Form submission
$("#formId").on('submit', function(e){
e.preventDefault();
formData = new FormData(this);
formData.append(fileList);
url = '../php/submit.php';
fetch(url, {method: 'POST', body: formData})
.then(function(response) {
return response.text();
})
.then(function(body){
console.log(body);
});
});
});
<form id="formId" enctype="multipart/form-data" method="POST">
<div class="ds-row ds-file-upload-container ds-mar-b-2">
<div class="ds-col-xs-12 ds-col-md-6">
<label for="inputId" class="ds-button">Choose a file
<input type="file" class="ds-file-upload" name="upload[]" id="inputId" multiple="multiple">
</label>
</div>
</div>
</form>
As of now, the form is not submitting anything when the submit button is clicked. If I comment out the #inputId onchange event, it works, but of course, it doesn't have all the files included in the FormData.
Here is working code for you and tested as well.
You have few issues with formData append. You are not doing any forEach for your file so so when you are sending the fetch request you formData only gets the last file.
To store multiple file you need to have an empty array which i have named as filesToUpload
This array will store all the file which you will select on change function.
Once the array contains all the files you want to upload. On form submit function you will loop through that filesToUpload array and append all its data to formData and send it via fetch request.
On the backend PHP side when you var_dump($_POST) OR var_dump($_FILES) you will see all these files there.
Working fiddle Demo: https://jsfiddle.net/woft6grd/
In the demo when you go dev tools -> network you will see on form submit your request will have all the files you uploaded via input.
jQuery
$(document).ready(function() {
// Add input files to array
var filesToUpload = []
//On Change loop through all file and push to array[]
$('#inputId').on('change', function(e) {
for (var i = 0; i < this.files.length; i++) {
filesToUpload.push(this.files[i]);
}
});
// Form submission
$("#formId").on('submit', function(e) {
e.preventDefault();
//Store form Data
var formData = new FormData()
//Loop through array of file and append form Data
for (var i = 0; i < filesToUpload.length; i++) {
var file = filesToUpload[i]
formData.append("uploaded_files[]", file);
}
//Fetch Request
url = '../php/submit.php';
fetch(url, {
method: 'POST',
body: formData
})
.then(function(response) {
return response.text();
})
.then(function(body) {
console.log(body);
});
})
});
HTML
<form id="formId" enctype="multipart/form-data" method="POST">
<div class="ds-row ds-file-upload-container ds-mar-b-2">
<div class="ds-col-xs-12 ds-col-md-6">
<label for="inputId" class="ds-button">Choose a file
<input type="file" class="ds-file-upload" name="upload[]" id="inputId" multiple="multiple" required>
</label>
</div>
</div>
<input type="submit" value="Upload" />
</form>
I have added comments to each code line as well to highlight as well.
I am having a simple form with one input for single file and another input for multiple files how can I make ajax call looping file by file and along with other form data each time?
<form id = "uploadForm" name = "uploadForm" enctype="multipart/form-data">
<label for="uploadFile">Upload Your File</label>
<input type="file" name="uploadFile" id="uploadFile">
<input type="file" name="attachment" id="attachments" multiple />
<input type="text" name="attachmentId" value="1236">
<input type="text" name="attachmentName" >
<input type="text" name="JobId" value="xyz" >
<input type="text" name="fileCategory" value="abc">
Right now I am doing whole ajax Form submit like below:
$('#'+formId).ajaxForm({
url:FileUploadUrl,
headers: { "X-Requested-With":"XMLHttpRequest" },
contentType: 'application/json',
dataType:'json',
success : function(data){
},
But I want to do it for one file at a time, Please help thanks in advance.
Not certain what purpose is for calling $.ajax() for each File object, though you can use $.when(), Function.prototype.apply(), $.map(), .map() to perform request for each File at input type="file" FileList at .files property
var n = 0;
var requests = $.when.apply($, $.map($("#uploadForm :file"), function(input) {
return $.when.apply($, [].slice.call(input.files).map(function(file, index) {
return $.ajax({url, data:new FormData("file-" + n++, file)})
})
)
}))
.then(function(results) {
console.log(results)
}, function handleErr(err) {
console.log(err)
})
Hi can any one please tell me how to upload files using ajax, jquery and Struts2. I have gone through the lot of tutorials in the net but i didn't get any possible solution. The requirement is when ever we click on the button the javascript function need to be called.The javascript(jquery) initiate the Ajax engine and ajax need to call the struts action to get the response. Here the request and response is without refresh the page and without using the IFrames.
I use iframe to submit my data without refresh.
i) My html is as follows :
1) Add form tag. // You can just copy paste my form tag just change the action
2) Add target="my_iframe" // The iframe name.. it can be anything
<div class="bp_up_input">
<form name="banner_image_uploads" id="banner_image_uploads" method="post" action="" target="my_iframe" enctype="multipart/form-data">
<span>
<input type="file" name="banner_image" class="my_vld" lang="Image_path" />
<input type="button" id="banner_image_upload" value="Upload" class="bp_button_style" />
</span>
<input type="hidden" name="slt_store_id" value="" />
<input type="hidden" name="sld_location" value="" />
</form>
</div>
ii) My javascript code is a follows :
$('#banner_image_upload').live('click',function(){
if($.trim($('input[name="banner_image"]').val()) != '' && $.trim($('select[name="bp_location"]').val()) != '' && $.trim($('#store_names').val()) != ''){
$("iframe").remove(); //Remove previous iframe if present
$("body").append('<iframe id="my_iframe" name="my_iframe" src="" style="display:none;"></iframe>'); //Append iframe to body with id my_iframe
$('#banner_image_uploads').submit();//submit the form with id banner_image_uploads
$("#my_iframe").load(function(){
var val = $("iframe")[0].contentDocument.body.innerHTML; // I use php so I just echo the response which I want to send e.g 250:new and save it in var val.
var data = val.split(':'); // I split the variable by :
var html = '<tr><td><img width="800" height="60" border="0" src="/assets/store_banners/live/'+$.trim($('input[name="sld_location"]').val())+'/'+data[1]+'" id="'+data[0]+'"><img src="/images/delete_trash.png" width="9" height="12" class="image_delete" style="padding-left:37%;"/></td></tr>'; // In my case I wanted to upload an image so on success I had to show the image which was uploaded. You can skip this and the below code if you want.
$('.bp_table tbody').append(html); //Append the uploaded image to the container I wanted.
$('input[name="banner_image"]').val(''); //On success I clear the file name
});
}else{
alert('Please Select filters');
}
Hi the below code is working for me. I hope it will help you.
JSP Code:
<div id="uploadImg">
<s:form id="uploadImgForm" action="strutsaction" method="post" enctype="multipart/form-data">
<s:file name="imgFileUpload" label="Choose file to upload" accept="image/*"></s:file>
<s:submit value="Upload" align="center" id="uploadImgSubmitBtn"></s:submit>
</s:form>
<div>
JQuery:
$("#uploadImgSubmitBtn").click(function(e){
// Get form
var form = $('#uploadImgForm')[0];
// Create an FormData object
var data = new FormData(form);
$.ajax({
type: "POST",
enctype: 'multipart/form-data',
url: "strutsaction.action",
data : data,
cache: false,
processData: false,
contentType: false,
success: function(data){
$('#uploadImg').html(data);
}
});
});
I currently have a HTML form which users fill in details of an advert they wish to post. I now want to be able to add a dropzone for uploading images of the item for sale.
I have found Dropzone.js which seems to do most of what I need. However, when looking into the documentation, it appears that you need to specify the class of the whole form as dropzone (as opposed to just the input element). This then means that my entire form becomes the dropzone.
Is it possible to use the dropzone in just part of my form, i.e. by only specifying the element as class "dropzone", rather than the whole form?
I could use separate forms, but I want the user to be able to submit it all with one button.
Alternatively, is there another library that can do this?
Many thanks
Here's another way to do it: add a div in your form with a classname dropzone, and implement dropzone programmatically.
HTML :
<div id="dZUpload" class="dropzone">
<div class="dz-default dz-message"></div>
</div>
JQuery:
$(document).ready(function () {
Dropzone.autoDiscover = false;
$("#dZUpload").dropzone({
url: "hn_SimpeFileUploader.ashx",
addRemoveLinks: true,
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");
}
});
});
Note : Disabling autoDiscover, otherwise Dropzone will try to attach twice
I had the exact same problem and found that Varan Sinayee's answer was the only one that actually solved the original question. That answer can be simplified though, so here's a simpler version.
The steps are:
Create a normal form (don't forget the method and enctype args since this is not handled by dropzone anymore).
Put a div inside with the class="dropzone" (that's how Dropzone attaches to it) and id="yourDropzoneName" (used to change the options).
Set Dropzone's options, to set the url where the form and files will be posted, deactivate autoProcessQueue (so it only happens when user presses 'submit') and allow multiple uploads (if you need it).
Set the init function to use Dropzone instead of the default behavior when the submit button is clicked.
Still in the init function, use the "sendingmultiple" event handler to send the form data along wih the files.
Voilà ! You can now retrieve the data like you would with a normal form, in $_POST and $_FILES (in the example this would happen in upload.php)
HTML
<form action="upload.php" enctype="multipart/form-data" method="POST">
<input type="text" id ="firstname" name ="firstname" />
<input type="text" id ="lastname" name ="lastname" />
<div class="dropzone" id="myDropzone"></div>
<button type="submit" id="submit-all"> upload </button>
</form>
JS
Dropzone.options.myDropzone= {
url: 'upload.php',
autoProcessQueue: false,
uploadMultiple: true,
parallelUploads: 5,
maxFiles: 5,
maxFilesize: 1,
acceptedFiles: 'image/*',
addRemoveLinks: true,
init: function() {
dzClosure = this; // Makes sure that 'this' is understood inside the functions below.
// for Dropzone to process the queue (instead of default form behavior):
document.getElementById("submit-all").addEventListener("click", function(e) {
// Make sure that the form isn't actually being sent.
e.preventDefault();
e.stopPropagation();
dzClosure.processQueue();
});
//send all the form data along with the files:
this.on("sendingmultiple", function(data, xhr, formData) {
formData.append("firstname", jQuery("#firstname").val());
formData.append("lastname", jQuery("#lastname").val());
});
}
}
The "dropzone.js" is the most common library for uploading images.
If you want to have the "dropzone.js" as just part of your form, you should do the following steps:
1) for the client side:
HTML :
<form action="/" enctype="multipart/form-data" method="POST">
<input type="text" id ="Username" name ="Username" />
<div class="dropzone" id="my-dropzone" name="mainFileUploader">
<div class="fallback">
<input name="file" type="file" multiple />
</div>
</div>
</form>
<div>
<button type="submit" id="submit-all"> upload </button>
</div>
JQuery:
<script>
Dropzone.options.myDropzone = {
url: "/Account/Create",
autoProcessQueue: false,
uploadMultiple: true,
parallelUploads: 100,
maxFiles: 100,
acceptedFiles: "image/*",
init: function () {
var submitButton = document.querySelector("#submit-all");
var wrapperThis = this;
submitButton.addEventListener("click", function () {
wrapperThis.processQueue();
});
this.on("addedfile", function (file) {
// Create the remove button
var removeButton = Dropzone.createElement("<button class='btn btn-lg dark'>Remove File</button>");
// Listen to the click event
removeButton.addEventListener("click", function (e) {
// Make sure the button click doesn't submit the form:
e.preventDefault();
e.stopPropagation();
// Remove the file preview.
wrapperThis.removeFile(file);
// If you want to the delete the file on the server as well,
// you can do the AJAX request here.
});
// Add the button to the file preview element.
file.previewElement.appendChild(removeButton);
});
this.on('sendingmultiple', function (data, xhr, formData) {
formData.append("Username", $("#Username").val());
});
}
};
</script>
2) for the server side:
ASP.Net MVC
[HttpPost]
public ActionResult Create()
{
var postedUsername = Request.Form["Username"].ToString();
foreach (var imageFile in Request.Files)
{
}
return Json(new { status = true, Message = "Account created." });
}
I have a more automated solution for this.
HTML:
<form role="form" enctype="multipart/form-data" action="{{ $url }}" method="{{ $method }}">
{{ csrf_field() }}
<!-- You can add extra form fields here -->
<input hidden id="file" name="file"/>
<!-- You can add extra form fields here -->
<div class="dropzone dropzone-file-area" id="fileUpload">
<div class="dz-default dz-message">
<h3 class="sbold">Drop files here to upload</h3>
<span>You can also click to open file browser</span>
</div>
</div>
<!-- You can add extra form fields here -->
<button type="submit">Submit</button>
</form>
JavaScript:
Dropzone.options.fileUpload = {
url: 'blackHole.php',
addRemoveLinks: true,
accept: function(file) {
let fileReader = new FileReader();
fileReader.readAsDataURL(file);
fileReader.onloadend = function() {
let content = fileReader.result;
$('#file').val(content);
file.previewElement.classList.add("dz-success");
}
file.previewElement.classList.add("dz-complete");
}
}
Laravel:
// Get file content
$file = base64_decode(request('file'));
No need to disable DropZone Discovery and the normal form submit will be able to send the file with any other form fields through standard form serialization.
This mechanism stores the file contents as base64 string in the hidden input field when it gets processed. You can decode it back to binary string in PHP through the standard base64_decode() method.
I don't know whether this method will get compromised with large files but it works with ~40MB files.
Enyo's tutorial is excellent.
I found that the sample script in the tutorial worked well for a button embedded in the dropzone (i.e., the form element). If you wish to have the button outside the form element, I was able to accomplish it using a click event:
First, the HTML:
<form id="my-awesome-dropzone" action="/upload" class="dropzone">
<div class="dropzone-previews"></div>
<div class="fallback"> <!-- this is the fallback if JS isn't working -->
<input name="file" type="file" multiple />
</div>
</form>
<button type="submit" id="submit-all" class="btn btn-primary btn-xs">Upload the file</button>
Then, the script tag....
Dropzone.options.myAwesomeDropzone = { // The camelized version of the ID of the form element
// The configuration we've talked about above
autoProcessQueue: false,
uploadMultiple: true,
parallelUploads: 25,
maxFiles: 25,
// The setting up of the dropzone
init: function() {
var myDropzone = this;
// Here's the change from enyo's tutorial...
$("#submit-all").click(function (e) {
e.preventDefault();
e.stopPropagation();
myDropzone.processQueue();
});
}
}
Further to what sqram was saying, Dropzone has an additional undocumented option, "hiddenInputContainer". All you have to do is set this option to the selector of the form you want the hidden file field to be appended to. And voila! The ".dz-hidden-input" file field that Dropzone normally adds to the body magically moves into your form. No altering the Dropzone source code.
Now while this works to move the Dropzone file field into your form, the field has no name. So you will need to add:
_this.hiddenFileInput.setAttribute("name", "field_name[]");
to dropzone.js after this line:
_this.hiddenFileInput = document.createElement("input");
around line 547.
I want to contribute an answer here as I too have faced the same issue - we want the $_FILES element available as part of the same post as another form. My answer is based on #mrtnmgs however notes the comments added to that question.
Firstly: Dropzone posts its data via ajax
Just because you use the formData.append option still means that you must tackle the UX actions - i.e. this all happens behind the scenes and isn't a typical form post. Data is posted to your url parameter.
Secondly: If you therefore want to mimic a form post you will need to store the posted data
This requires server side code to store your $_POST or $_FILES in a session which is available to the user on another page load as the user will not go to the page where the posted data is received.
Thirdly: You need to redirect the user to the page where this data is actioned
Now you have posted your data, stored it in a session, you need to display/action it for the user in an additional page. You need to send the user to that page as well.
So for my example:
[Dropzone code: Uses Jquery]
$('#dropArea').dropzone({
url: base_url+'admin/saveProject',
maxFiles: 1,
uploadMultiple: false,
autoProcessQueue:false,
addRemoveLinks: true,
init: function(){
dzClosure = this;
$('#projectActionBtn').on('click',function(e) {
dzClosure.processQueue(); /* My button isn't a submit */
});
// My project only has 1 file hence not sendingmultiple
dzClosure.on('sending', function(data, xhr, formData) {
$('#add_user input[type="text"],#add_user textarea').each(function(){
formData.append($(this).attr('name'),$(this).val());
})
});
dzClosure.on('complete',function(){
window.location.href = base_url+'admin/saveProject';
})
},
});
You can modify the formData by catching the 'sending' event from your dropzone.
dropZone.on('sending', function(data, xhr, formData){
formData.append('fieldname', 'value');
});
In order to submit all files alongside with other form data in a single request you can copy Dropzone.js temporary hidden input nodes into your form. You can do this within addedfiles event handler:
var myDropzone = new Dropzone("myDivSelector", { url: "#", autoProcessQueue: false });
myDropzone.on("addedfiles", () => {
// Input node with selected files. It will be removed from document shortly in order to
// give user ability to choose another set of files.
var usedInput = myDropzone.hiddenFileInput;
// Append it to form after stack become empty, because if you append it earlier
// it will be removed from its parent node by Dropzone.js.
setTimeout(() => {
// myForm - is form node that you want to submit.
myForm.appendChild(usedInput);
// Set some unique name in order to submit data.
usedInput.name = "foo";
}, 0);
});
Obviosly this is a workaround dependent on implementation details. Related source code.
Working solution for 5.7.0 version
<form id="upload" enctype="multipart/form-data">
<input type="text" name="name" value="somename">
<input type="checkbox" name="terms_agreed">
<div id="previewsContainer" class="dropzone">
<div class="dz-default dz-message">
<button class="dz-button" type="button">
Drop files here to upload
</button>
</div>
</div>
<input id="dz-submit" type="submit" value="submit">
</form>
Dropzone.autoDiscover = false;
new Dropzone("#upload",{
clickable: ".dropzone",
url: "upload.php",
previewsContainer: "#previewsContainer",
uploadMultiple: true,
autoProcessQueue: false,
init() {
var myDropzone = this;
this.element.querySelector("[type=submit]").addEventListener("click", function(e){
e.preventDefault();
e.stopPropagation();
myDropzone.processQueue();
});
}
});
Here is my sample, is based on Django + Dropzone. View has select(required) and submit.
<form action="/share/upload/" class="dropzone" id="uploadDropzone">
{% csrf_token %}
<select id="warehouse" required>
<option value="">Select a warehouse</option>
{% for warehouse in warehouses %}
<option value={{forloop.counter0}}>{{warehouse.warehousename}}</option>
{% endfor %}
</select>
<button id="submit-upload btn" type="submit">upload</button>
</form>
<script src="{% static '/js/libs/dropzone/dropzone.js' %}"></script>
<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
<script>
var filename = "";
Dropzone.options.uploadDropzone = {
paramName: "file", // The name that will be used to transfer the file,
maxFilesize: 250, // MB
autoProcessQueue: false,
accept: function(file, done) {
console.log(file.name);
filename = file.name;
done(); // !Very important
},
init: function() {
var myDropzone = this,
submitButton = document.querySelector("[type=submit]");
submitButton.addEventListener('click', function(e) {
var isValid = document.querySelector('#warehouse').reportValidity();
e.preventDefault();
e.stopPropagation();
if (isValid)
myDropzone.processQueue();
});
this.on('sendingmultiple', function(data, xhr, formData) {
formData.append("warehouse", jQuery("#warehouse option:selected").val());
});
}
};
</script>
This is just another example of how you can use Dropzone.js in an existing form.
dropzone.js :
init: function() {
this.on("success", function(file, responseText) {
//alert("HELLO ?" + responseText);
mylittlefix(responseText);
});
return noop;
},
Then, later in the file I put
function mylittlefix(responseText) {
$('#botofform').append('<input type="hidden" name="files[]" value="'+ responseText +'">');
}
This assumes you have a div with id #botofform that way when uploading you can use the uploaded files' names.
Note: my upload script returned theuploadedfilename.jpeg
dubblenote you also would need to make a cleanup script that checks the upload directory for files not in use and deletes them ..if in a front end non authenticated form :)
Try this
<div class="dropzone dz-clickable" id="myDrop">
<div class="dz-default dz-message" data-dz-message="">
<span>Drop files here to upload</span>
</div>
</div>
JS
<script>
Dropzone.autoDiscover = false;
Dropzone.default.autoDiscover=false;
$("div#myDrop").dropzone({
url: "/file/post",
});
</script>