Develop Reference

Plupload Overall Progress issue

I have below code in before upload event for a Plupload control in my aspx page which has three upload control for upload images. my problem is when "Validate_Img_File_Name.ashx" returns not success output and stop the specific file upload the overall progress bar and the progress percentage is not finishing at 100%. function "_updateTotalProgress:" in jquery.ui.plupload.js do the overall progress I guess, but I have no idea of how to overcome this issues since my knowledge of java is zero. how can I get the correct overall progress ? your help is highly appreciated.
BeforeUpload: function (up, file) {
// Called right before the upload for a given file starts, can be used to cancel it if required
//log('[BeforeUpload]', 'File: ', file);
$.ajax({
url: "../Validate_Img_File_Name.ashx",
type: "POST",
datatype: 'text',
data: { filename: file.name },
cache: false,
}).done(function (data) {
if (data == "SUCCESS") {
up.settings.url = '/bulk_img_uploader.ashx';
file.status = plupload.UPLOADING;
up.trigger("UploadFile", file);
up.settings.url = '';
log('File:', file, '- OK');
} else {
//alert(file.name + " " + "fail");
up.stop();
file.status = plupload.FAILED;
up.trigger('QueueChanged'); //Line A
up.trigger('UploadProgress', file); // Line B
up.start();
log('File:', file, ' - ' + data);
return false;
}
});
},

how to upload multiple images with resizing in jquery to django backend server

I am using Jquery file upload and compressing code for images with this i can select multiple images but it only compressing and uploading the last image selected
so how can i upload multiple images with compression? What modifications are needed plzz suggest.
Html code:
<input id="fileupload" type="file" name="file" multiple>
Jquery code:
function csrfSafeMethod(method) {
return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
$(function () {
'use strict';
var csrftoken = $.cookie('csrftoken');
var url = '/dashboard/{{name}}/{{name_product_type.type_product|urlencode}}/{{abc}}/';
$('#postbtn').on('click', function () {
var $this = $(this),
data = $this.data();
$this
.off('click')
.text('Abort')
.on('click', function () {
$this.remove();
data.abort();
});
data.submit().always(function () {
$this.remove();
});
});
$('#fileupload').fileupload({
url: url,
crossDomain: false,
beforeSend: function(xhr, settings) {
if (!csrfSafeMethod(settings.type)) {
xhr.setRequestHeader("X-CSRFToken", csrftoken);
}
},
dataType: 'json',
uploadMultiple: true, // allow multiple upload
autoProcessQueue: false, // prevent dropzone from uploading automatically
maxFiles: 5,
autoUpload: false,
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
maxFileSize: 5000000, // 5 MB
// Enable image resizing, except for Android and Opera,
// which actually support image resizing, but fail to
// send Blob objects via XHR requests:
disableImageResize: /Android(?!.*Chrome)|Opera/
.test(window.navigator.userAgent),
previewMaxWidth: 100,
previewMaxHeight: 100,
previewCrop: true
}).on('fileuploadadd', function (e, data) {
data.context = $('<div/>').appendTo('#files');
$.each(data.files, function (index, file) {
var node = $('<p/>')
.append($('<span/>').text(file.name));
if (!index) {
node
.append('<br>')
// .append($('#postbtn').clone(true).data(data));
}
node.appendTo(data.context);
});
}).on('fileuploadprocessalways', function (e, data) {
var index = data.index,
file = data.files[index],
node = $(data.context.children()[index]);
if (file.preview) {
node
.prepend('<br>')
.prepend(file.preview);
}
if (file.error) {
node
.append('<br>')
.append(file.error);
}
if (index + 1 === data.files.length) {
data.context.find($('#postbtn').data(data));
// .text('Upload')
// .prop('disabled', !!data.files.error);
}
}).on('fileuploadprogressall', function (e, data) {
var progress = parseInt(data.loaded / data.total * 100, 10);
$('#progress .progress-bar').css(
'width',
progress + '%'
);
}).on('fileuploaddone', function (e, data) {
$.each(data.result.files, function (index, file) {
var link = $('<a>')
.attr('target', '_blank')
.prop('href', file.url);
$(data.context.children()[index])
.wrap(link);
});
}).on('fileuploadfail', function (e, data) {
$.each(data.result.files, function (index, file) {
var error = $('<span/>').text(file.error);
$(data.context.children()[index])
.append('<br>')
.append(error);
});
}).prop('disabled', !$.support.fileInput)
.parent().addClass($.support.fileInput ? undefined : 'disabled');
});
Django backend :
in views.py :
files=request.FILES.getlist('file')
and then save it to database.
Everrthing works fine. Even image is compressed at the output but we intent to have multiple images compressed and save back to database at one hit of button.
Any sugestions are welcomed...
Thank you...

jquery file upload basic plus mutiple file upload

I am using basic plus of jquery file upload, and i am trying to have one upload button to upload multiple files at same time but its current showing multiple upload buttons if i select multiple files, you can see try it online at here
HTML Code
<span class="btn btn-success fileinput-button">
<i class="glyphicon glyphicon-plus"></i>
<span>Add files...</span>
<!-- The file input field used as target for the file upload widget -->
<input id="fileupload" type="file" name="files[]" multiple>
</span>
<br>
<br>
<!-- The global progress bar -->
<div id="progress" class="progress">
<div class="progress-bar progress-bar-success"></div>
</div>
<!-- The container for the uploaded files -->
<div id="files" class="files"></div>
JS Code
$(function () {
'use strict';
// Change this to the location of your server-side upload handler:
var url = '',
uploadButton = $('<button/>')
.addClass('btn btn-primary')
.prop('disabled', true)
.text('Processing...')
.on('click', function () {
var $this = $(this),
data = $this.data();
$this
.off('click')
.text('Abort')
.on('click', function () {
$this.remove();
data.abort();
});
data.submit().always(function () {
$this.remove();
});
});
$('#fileupload').fileupload({
url: url,
dataType: 'json',
autoUpload: false,
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
maxFileSize: 5000000, // 5 MB
// Enable image resizing, except for Android and Opera,
// which actually support image resizing, but fail to
// send Blob objects via XHR requests:
disableImageResize: /Android(?!.*Chrome)|Opera/
.test(window.navigator.userAgent),
previewMaxWidth: 100,
previewMaxHeight: 100,
previewCrop: true
}).on('fileuploadadd', function (e, data) {
data.context = $('<div/>').appendTo('#files');
$.each(data.files, function (index, file) {
var node = $('<p/>')
.append($('<span/>').text(file.name));
if (!index) {
node
.append('<br>')
.append(uploadButton.clone(true).data(data));
}
node.appendTo(data.context);
});
}).on('fileuploadprocessalways', function (e, data) {
var index = data.index,
file = data.files[index],
node = $(data.context.children()[index]);
if (file.preview) {
node
.prepend('<br>')
.prepend(file.preview);
}
if (file.error) {
node
.append('<br>')
.append($('<span class="text-danger"/>').text(file.error));
}
if (index + 1 === data.files.length) {
data.context.find('button')
.text('Upload')
.prop('disabled', !!data.files.error);
}
}).on('fileuploadprogressall', function (e, data) {
var progress = parseInt(data.loaded / data.total * 100, 10);
$('#progress .progress-bar').css(
'width',
progress + '%'
);
}).on('fileuploaddone', function (e, data) {
$.each(data.result.files, function (index, file) {
if (file.url) {
var link = $('<a>')
.attr('target', '_blank')
.prop('href', file.url);
$(data.context.children()[index])
.wrap(link);
} else if (file.error) {
var error = $('<span class="text-danger"/>').text(file.error);
$(data.context.children()[index])
.append('<br>')
.append(error);
}
});
}).on('fileuploadfail', function (e, data) {
$.each(data.files, function (index) {
var error = $('<span class="text-danger"/>').text('File upload failed.');
$(data.context.children()[index])
.append('<br>')
.append(error);
});
}).prop('disabled', !$.support.fileInput)
.parent().addClass($.support.fileInput ? undefined : 'disabled');
});
Its working but shows multiple upload buttons if i select multiple files to upload but i want to have one upload button which can process all uploaded files at same time. Thanks for your help.

jQuery File Upload in Rails 4.x Nested Form

I have a Horse model and a Photo model. I am using jQuery File Upload to resize (client side) images and save on Amazon s3 directly since I am using Heroku.
I have seen other questions similar that use carrierwave, paperclip, or that are very old. I am not sure why you would use carrierwave/paperclip, but I think based on what heroku says, I do not want to have images hitting the server potentially causing time-outs.
Heroku recommends using jQuery File Upload and shows js appending new file input with a value of the image's link (returned from amazon s3). I have this working when saving a photo separately. I now want to make it work in a nested form for Horse but js is not finding input (since it does not exist yet because it's nested I presume).
I am using Cocoon for nested forms (I am open to anything that will work better). I am not too familiar with javascript/jQuery but a far as I can tell, Cocoon 'hides' the nested element until I click to add it via the add_association.
haml view code:
= link_to_add_association 'add photo', f, :photos
html source before clicking 'add photo'
<div class='links'>
<a class="btn btn-default btn-sm add_fields" data-association-insertion-method="after" data-association="photo" data-associations="photos" data-association-insertion-template="<div class='nested-fields'>
<fieldset class="inputs"><ol><input type="file" name="horse[photos_attributes][new_photos][url]" id="horse_photos_attributes_new_photos_url" />
<input type="hidden" name="horse[photos_attributes][new_photos][_destroy]" id="horse_photos_attributes_new_photos__destroy" value="false" /><a class="remove_fields dynamic" href="#">remove photo</a>
</ol></fieldset>
</div>
" href="#">add photo</a>
How do I work with this input and how do I handle multiple file uploads as they are added correctly?
My current upload js:
$(function() {
if ($('#new_horse').length > 0) {
$.get( "/presign", function( s3params ) {
$('.direct-upload').find("input:file").each(function(i, elem) {
var fileInput = $(elem);
var form = $(fileInput.parents('form:first'));
var submitButton = form.find('input[type="submit"]');
var progressBar = $("<div class='bar'></div>");
var barContainer = $("<div class='progress'></div>").append(progressBar);
fileInput.fileupload({
fileInput: fileInput,
url: "http://" + s3params.url.host,
type: 'POST',
autoUpload: true,
formData: s3params.fields,
paramName: 'file', // S3 does not like nested name fields i.e. name="user[avatar_url]"
dataType: 'XML', // S3 returns XML if success_action_status is set to 201
disableImageResize: false,
imageQuality: 0.5,
disableImageResize: /Android(?!.*Chrome)|Opera/
.test(window.navigator && navigator.userAgent),
imageMaxWidth: 500,
imageMaxHeight: 1000,
imageOrientation: true, //auto rotates images
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i, //I added this to jquery.fileupload-validate: alert('Must Be JPG GIF or PNG Image')
replaceFileInput: false,
progressall: function (e, data) {
var progress = parseInt(data.loaded / data.total * 100, 10);
progressBar.css('width', progress + '%')
},
start: function (e) {
submitButton.prop('disabled', true);
fileInput.after(barContainer);
progressBar.
css('background', 'green').
css('display', 'block').
css('width', '0%').
text("Loading...");
},
done: function(e, data) {
submitButton.prop('disabled', false);
progressBar.text("Pre-uploading done... Please Save or Cancel");
// extract key and generate URL from response
var key = $(data.jqXHR.responseXML).find("Key").text();
var url = 'https://' + s3params.url.host +'/' + key;
// remove first input to prevent phantom upload delay
fileInput.remove();
// create new hidden input with image url
var input = $("<input />", { type:'hidden', name: fileInput.attr('name'), value: url })
var imgPreview = '<img src="' + url + '">';
form.append(input);
form.append(imgPreview);
},
fail: function(e, data) {
submitButton.prop('disabled', false);
progressBar.
css("background", "red").
text("Failed");
}
});
});
}, 'json');
}
});

I guess I should have looked at cocoon documentation first:
http://www.rubydoc.info/gems/cocoon#Callbacks__upon_insert_and_remove_of_items_
http://www.rubydoc.info/gems/cocoon/1.2.6
I modified my upload.js file to the following and it worked for multiple files in nested forms perfectly:
// added for file uploading
// https://devcenter.heroku.com/articles/direct-to-s3-image-uploads-in-rails
// Get our s3params from our endpoint
$(document).on('ready page:load', function () {
$('.direct-upload')
.on('cocoon:after-insert', function(e, photo) {
console.log('inside cocoon image function');
$.get( "/presign", function( s3params ) {
$('.direct-upload').find("input:file").each(function(i, elem) {
console.log('inside nested-fields photo input form');
var fileInput = $(elem);
var form = $(fileInput.parents('form:first'));
var submitButton = form.find('input[type="submit"]');
var progressBar = $("<div class='bar'></div>");
var barContainer = $("<div class='progress'></div>").append(progressBar);
fileInput.fileupload({
fileInput: fileInput,
url: "http://" + s3params.url.host,
type: 'POST',
autoUpload: true,
formData: s3params.fields,
paramName: 'file', // S3 does not like nested name fields i.e. name="user[avatar_url]"
dataType: 'XML', // S3 returns XML if success_action_status is set to 201
disableImageResize: false,
imageQuality: 0.5,
disableImageResize: /Android(?!.*Chrome)|Opera/
.test(window.navigator && navigator.userAgent),
imageMaxWidth: 500,
imageMaxHeight: 1000,
imageOrientation: true, //auto rotates images
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i, //I added this to jquery.fileupload-validate: alert('Must Be JPG GIF or PNG Image')
replaceFileInput: false,
previewMaxWidth: 100,
previewMaxHeight: 100,
previewCrop: true,
progressall: function (e, data) {
var progress = parseInt(data.loaded / data.total * 100, 10);
progressBar.css('width', progress + '%')
},
start: function (e) {
submitButton.prop('disabled', true);
fileInput.after(barContainer);
progressBar.
css('background', 'green').
css('display', 'block').
css('width', '0%').
text("Loading...");
},
done: function(e, data) {
submitButton.prop('disabled', false);
progressBar.text("Photo Uploaded");
// extract key and generate URL from response
var key = $(data.jqXHR.responseXML).find("Key").text();
var url = 'https://' + s3params.url.host +'/' + key;
// remove first input to prevent phantom upload delay
fileInput.remove();
// create new hidden input with image url
var input = $("<input />", { type:'hidden', name: fileInput.attr('name'), value: url })
var imgPreview = '<img src="' + url + '">';
form.append(input);
form.append(imgPreview);
},
fail: function(e, data) {
submitButton.prop('disabled', false);
progressBar.
css("background", "red").
text("Failed");
}
}, 'json'); //fileupload
}); //each file
}); //presign call
}); // function cocoon
}); // page ready
I guess Google and a well documented gem can replace knowledge of JS in the short term :-) I am sure it's not at tight as it could be so please offer any improvements.

Stop file upload when filesize too large - jQuery S3

Please view the snippet below. I am using jQuery fileUpload and a direct s3 form to upload videos to AWS. I would like there to be a filesize limit of 5mb which is imposed before the video hits any local server. How can I amend this code so that the upload is halted completely and alerts the user when the filesize is over 5mb and if its under, everything carries on as usual?
I have added a content length limit of 5mb to the S3 form options, so uploads of larger than this are refused, but it would be preferable if there was something to notify the user that an upload is too large to start with.
$ ->
$(".direct-upload").each ->
form = $(this)
$(this).fileupload
url: form.attr("action")
type: "POST"
autoUpload: true
dataType: "xml"
add: (event, data) ->
if data.files[0].size < 5242880
$.ajax
url: "/signed_urls"
type: "GET"
dataType: "json"
data:
doc:
title: data.files[0].name
async: false
success: (data) ->
form.find("input[name=key]").val data.key
form.find("input[name=policy]").val data.policy
form.find("input[name=signature]").val data.signature
data.submit()
send: (e, data) ->
$(".progress, #dropzone").fadeIn()
$.each data.files, (index, file) ->
$('.well').html("").append("Uploading: " + file.name + '<br>' + "File size: " + (file.size / 1000000 ) + ' MB')
progress: (e, data) ->
percent = undefined
percent = Math.round((e.loaded / e.total) * 100)
$(".bar").css "width", percent + "%"
fail: (e, data) ->
console.log "fail"
success: (data) ->
url = undefined
url = decodeURIComponent($(data).find("Location").text())
$("#video_file").val url
done: (event, data) ->
$("#new_video").submit()
$(".progress").fadeOut 1200, ->
$(".bar").css "width", 0
UPDATE:
This works nicely. Moving the if statement before the /signed_url prevents a file that is too big being sent to the server and alerts the user.
$ ->
$(".direct-upload").each (data) ->
form = $(this)
$(this).fileupload
url: form.attr("action")
type: "POST"
autoUpload: true
dataType: "xml"
add: (event, data) ->
if data.files[0].size < 5242880
$.ajax
url: "/signed_urls"
type: "GET"
dataType: "json"
data:
doc:
title: data.files[0].name
async: false
success: (data) ->
form.find("input[name=key]").val data.key
form.find("input[name=policy]").val data.policy
form.find("input[name=signature]").val data.signature
data.submit()
else
alert("File too big")
send: (e, data) ->
$(".progress, #dropzone").fadeIn()
$.each data.files, (index, file) ->
$('.well').html("").append("Uploading: " + file.name + '<br>' + "File size: " + (Math.round(file.size / 1000000 )) + ' MB')
progress: (e, data) ->
percent = undefined
percent = Math.round((e.loaded / e.total) * 100)
$(".bar").css "width", percent + "%"
fail: (e, data) ->
console.log "fail"
success: (data) ->
url = undefined
url = decodeURIComponent($(data).find("Location").text())
$("#video_file").val url
done: (event, data) ->
$("#new_video").submit()
$(".progress").fadeOut 1200, ->
$(".bar").css "width", 0

<form method="post" action="./step2.php" enctype="multipart/form-data" id="formID" name="formID">
<input type="text" name="title" id="title" />
<input type="file" name="pptfile" id="pptfile"/>
<input type="submit" name="btn" id="btn" />
<script type="text/javascript">
function checkUpload(size)
{
if(size>25)
{
var n = size.toFixed(2);
alert('Your file size is: ' + n + "MB, and it is too large to upload! Please try to upload smaller file (25MB or less).");
document.getElementById("btn").style.display='none';
}
else
{
//alert('File size is OK');
$('#tbn').show();
}
}
$('#pptfile').bind('change', function() {
var fileSize = this.files[0].size/1024/1024;
checkUpload(fileSize);
});
</script>
</form>

That's pretty much exactly the same way I do it. If you don't submit it, it won't send the file.
Do you want to be submitting that ajax requested to /signed_urls when the filesize is too big? Maybe you should move all of that inside the if data.files[0].size < 5242880 block?

Working for me:
checkFileSize(event) {
f = document.getElementById('id_ifile');
if (f.files.length > 0 && f.files[0].size > 3 * 1024 ** 2) {
alert( 'The file is too large (no more than 3MB)' );
event.preventDefault();
}
}