Develop Reference

Problems with displaying text in Javascript "N�O�T�I�C�E�", php displays it with no problem

PHP creates the text from metadata from image file which stores it in variable of the same name of IMG source.
No Problems
JavaScript displays the gallery to show images, scroll & enlarge.
During enlargement it gives description of image from source attribute but always displays the text with � after every character. But PHP doesn't.
I've tried encoding which you will see from code & & echo header("Content-Type: text/html; charset=ISO-8859-1");
PHP:
$path = "gallery/";
$objs = new RecursiveIteratorIterator(new
RecursiveDirectoryIterator($path),
RecursiveIteratorIterator::SELF_FIRST);
$num = 0;
foreach ($objs as $pic){
$pic = str_replace('gallery/', '', $pic);
if ($pic == '..' or $pic == '.'){
continue;
}
$exif = exif_read_data("$DIR/gallery/$pic", 0, true);
$pic = str_replace('.JPG', '', $pic);
${$pic} = $exif['IFD0']['Comments']; ///// php Variable
echo "<script> var $pic = '".$exif['IFD0']['Comments']."';
var $pic = utf8_encode($pic);</script>";
// JS of variable of same name.
}
Sloppy but Works
JQuery:
$('#mSide').on('click',function(){
var src = $('#mPic').attr('src');
var v = src.replace('/gallery/','');
v = v.replace('.JPG','');
v = unescape(encodeURIComponent(v));
$('#fullPic').show();
$('#fullPic').append('<img class=\"fPic\" src=\"'+src+'\"
height=\"90%\" widdth=\"90%\" style=\"margin-left:0px;\" />');
$('#fullPic').append('<span id=\"picSummary\"
style=\"color:#FFFFFF;\" >testing <textarea > '+ window[v] +'</textarea>
</span>');
$('#fullPic').prepend('<input class=\"closeFullP headr\"
value=\"Close\" READONLY><br class=\"closeFullP\">');
});
Sloppy but Works and window[v] is the call
Should display: this is the new val = NOTICE: This e-mail message may contain legally privileged and/or confidential information. If you are not the intended recipient, you are hereby notified that any dissemination of the contents of this message is strictly prohibited. If you have received this message in error, please immediately notify the sender at ########### and delete all copies of this e-mail message and its attachments.
Not: N�O�T�I�C�E�:� �T�h�i�s� �e�-�m�a�i�l�
�m�e�s�s�a�g�e� �m�a�y� �c�o�n�t�a�i�n�
�l�e�g�a�l�l�y� �p�r�i�v�i�l�e�g�e�d� �a�n�d�/�o�r�
�c�o�n�f�i�d�e�n�t�i�a�l� �i�n�f�o�r�m�a�t�i�o�n�.�
�I�f� �y�o�u� �a�r�e� �n�o�t� �t�h�e�
�i�n�t�e�n�d�e�d� �r�e�c�i�p�i�e�n�t�,...............

Never use utf8_encode() or utf8_decode() they make awful assumptions and happily/silently corrupt your data. Always use a function that allows you to explicitly specify your input and output encodings.
The data you're extracting from EXIF is encoded as UTF16-LE, and your page is... something else. I can't tell what and you should probably figure that out and be consistent.
Suggested reading: UTF-8 all the way through
If your page is encoded as ISO-8859-1:
$proper = mb_convert_encoding($input, 'ISO-8859-1', 'UTF-16-LE');
If your page is encoded as UTF-8:
$proper = mb_convert_encoding($input, 'UTF-8', 'UTF-16-LE');
Ref: https://secure.php.net/manual/en/function.mb-convert-encoding.php

Laravel change image in blade file with javascript

I am trying to use javascript to change an image in my blade file
but am getting the following error. As a side note I have enabled HTML forms in laravel, and I am able to display images without javascript.
Fatal error: Class 'HTML' not found (View:/home/vagrant/Code/Laravel/resources/views/pages/progress.blade.php)
Below is my javascript code
<script>
window.onload = function() {
changeImageForSeniorLevel();
};
function changeImageForSeniorLevel() {
var level = '<?php echo $levelValue; ?>';
if (level == 3)
{
document.getElementById("image").src="{{ HTML::image('progress2/Icons/Calls_Icon.png', 'alt',array('width' => 150 )) }}";
}
}
</script>
Here is the code for the image I am trying to change, the code will display an image if I comment my javascript.
{{ HTML::image('progress2/Icons/Meetings_Icon.png', 'alt', array('id' => 'image', 'width' =>150)) }}

HTML::image is a Laravel class / method that is parsed in PHP (which is hosted on your server). You cannot parse it using a browser / HTML. The browser does not know what HTML::image means. In your case, you just want to change the attributes of an image already drawn on your document.
You can use the following to achieve what you are looking for:
if(level == 3){
var myImage = document.getElementById("image");
myImage.src = 'progress2/Icons/Calls_Icon.png';
myImage.alt = 'alt';
myImage.style.width = '150px';
}

How to upload base64 image resource with dropzone?

I'm trying to upload generated client side documents (images for the moment) with Dropzone.js.
// .../init.js
var myDropzone = new Dropzone("form.dropzone", {
autoProcessQueue: true
});
Once the client have finished his job, he just have to click a save button which call the save function :
// .../save.js
function save(myDocument) {
var file = {
name: 'Test',
src: myDocument,
};
console.log(myDocument);
myDropzone.addFile(file);
}
The console.log() correctly return me the content of my document
data:image/png;base64,iVBORw0KGgoAAAANS...
At this point, we can see the progress bar uploading the document in the drop zone but the upload failed.
Here is my (standart dropzone) HTML form :
<form action="/upload" enctype="multipart/form-data" method="post" class="dropzone">
<div class="dz-default dz-message"><span>Drop files here to upload</span></div>
<div class="fallback">
<input name="file" type="file" />
</div>
</form>
I got a Symfony2 controller who receive the post request.
// Get request
$request = $this->get('request');
// Get files
$files = $request->files;
// Upload
$do = $service->upload($files);
Uploading from the dropzone (by drag and drop or click) is working and the uploads are successfull but using the myDropzone.addFile() function return me an empty object in my controller :
var_dump($files);
return
object(Symfony\Component\HttpFoundation\FileBag)#11 (1) {
["parameters":protected]=>
array(0) {
}
}
I think i don't setup correctly my var file in the save function.
I tryied to create JS image (var img = new Image() ...) but without any success.
Thanks for your help !

Finally i found a working solution without creating canvas :
function dataURItoBlob(dataURI) {
'use strict'
var byteString,
mimestring
if(dataURI.split(',')[0].indexOf('base64') !== -1 ) {
byteString = atob(dataURI.split(',')[1])
} else {
byteString = decodeURI(dataURI.split(',')[1])
}
mimestring = dataURI.split(',')[0].split(':')[1].split(';')[0]
var content = new Array();
for (var i = 0; i < byteString.length; i++) {
content[i] = byteString.charCodeAt(i)
}
return new Blob([new Uint8Array(content)], {type: mimestring});
}
And the save function :
function save(dataURI) {
var blob = dataURItoBlob(dataURI);
myDropzone.addFile(blob);
}
The file appears correctly in dropzone and is successfully uploaded.
I still have to work on the filename (my document is named "blob").
The dataURItoBlob function have been found here : Convert Data URI to File then append to FormData
[EDIT] : I finally wrote the function in dropzone to do this job. You can check it here : https://github.com/CasperArGh/dropzone
And you can use it like this :
var dataURI = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAmAAAAKwCAYAAA...';
myDropzone.addBlob(dataURI, 'test.png');

I can't comment currently and wanted to send this to you.
I know you found your answer, but I had some trouble using your Git code and reshaped it a little for my needs, but I am about 100% positive this will work for EVERY possible need to add a file or a blob or anything and be able to apply a name to it.
Dropzone.prototype.addFileName = function(file, name) {
file.name = name;
file.upload = {
progress: 0,
total: file.size,
bytesSent: 0
};
this.files.push(file);
file.status = Dropzone.ADDED;
this.emit("addedfile", file);
this._enqueueThumbnail(file);
return this.accept(file, (function(_this) {
return function(error) {
if (error) {
file.accepted = false;
_this._errorProcessing([file], error);
} else {
file.accepted = true;
if (_this.options.autoQueue) {
_this.enqueueFile(file);
}
}
return _this._updateMaxFilesReachedClass();
};
})(this));
};
If this is added to dropzone.js (I did just below the line with Dropzone.prototype.addFile = function(file) { potentially line 1110.
Works like a charm and used just the same as any other. myDropzone.addFileName(file,name)!
Hopefully someone finds this useful and doesn't need to recreate it!

1) You say that: "Once the client have finished his job, he just have to click a save button which call the save function:"
This implies that you set autoProcessQueue: false and intercept the button click, to execute the saveFile() function.
$("#submitButton").click(function(e) {
// let the event not bubble up
e.preventDefault();
e.stopPropagation();
// process the uploads
myDropzone.processQueue();
});
2) check form action
Check that your form action="/upload" is routed correctly to your SF controller & action.
3) Example Code
You may find a full example over at the official Wiki
4) Ok, thanks to your comments, i understood the question better:
"How can i save my base64 image resource with dropzone?"
You need to embedd the image content as value
// base64 data
var dataURL = canvas.toDataURL();
// insert the data into the form
document.getElementById('image').value = canvas.toDataURL('image/png');
//or jQ: $('#img').val(canvas.toDataURL("image/png"));
// trigger submit of the form
document.forms["form1"].submit();
You might run into trouble doing this and might need to set the "origin-clean" flag to "true". see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#security-with-canvas-elements
how to save html5 canvas to server

How do you access other files stored on an website with JavaScript?

I am trying to write a webpage for a list of files to download. The files are stored with the webpage and I want the webpage to dynamically list all the files in the folder to download. That way when more are added I don't have to modify the webpage. I know how to use JavaScript to create links on the webpage but I need to use it to find the names of the files first.
I found a website that had code for navigating files like a file browser but it only uses a string to store the current location.
This is in the header:
<script type="text/javascript"><!--
var myloc = window.location.href;
var locarray = myloc.split("/");
delete locarray[(locarray.length-1)];
var fileref = locarray.join("/");
//--></script>
this is in the body:
<form>
<input type=button value="Show Files" onClick="window.location=fileref;">
</form>
However this doesn't really help since I am trying to create download links to files not have a file browser.
Edit:
When you host a traditional HTML page you upload the htmlfile and any images or content for the page to what ever server you use.
I want to use javascript to dynamically link to every file hosted with the webpage.
I am trying to combine this with hosting the files in a Dropbox public folder for a simple way to make the files available.

If you want a list of files on the server you will need to use a server-side script to gather their names:
JS--
//use AJAX to get the list of files from a server-side script
$.getJSON('path/to/server-side.php', { 'get_list' : 'true' }, function (serverResponse) {
//check the response to make sure it's a success
if (serverResponse.status == 'success') {
var len = serverResponse.output.length,
out = [];
//iterate through the serverResponse variable
for (var i = 0; i < len; i++) {
//add output to the `out` variable
out.push('<li>' + serverResponse.output[i] + '</li>');
}
//place new serverResponse output into DOM
$('#my-link-container').html('<ul>' + out.join('') + '</ul>');
} else {
alert('An Error Occured');
}
});
PHP--
<?php
//check to make sure the `get_list` GET variable exists
if (isset($_GET['get_list'])) {
//open the directory you want to use for your downloads
$handle = opendir('path/to/directory');
$output = array();
//iterate through the files in this directory
while ($file = readdir($handle)) {
//only add the file to the output if it is not in a black-list
if (!in_array($file, array('.', '..', 'error_log'))) {
$output[] = $file;
}
}
if (!empty($output)) {
//if there are files found then output them as JSON
echo json_encode(array('status' => 'success', 'output' => $output));
} else {
//if no files are found then output an error msg in JSON
echo json_encode(array('status' => 'error', 'output' => array()));
}
} else {
//if no `get_list` GET variable is found then output an error in JSON
echo json_encode(array('status' => 'error', 'output' => array()));
}
?>

Zend_Form Jquery & fileUploadErrorIniSize

Edit, I fixed it by changing my JS to:
$('.zend_form input:not([type="file"]), .zend_form textarea').each(function() {
data[$(this).attr('name')] = $(this).val();
});
Hello,
As I posted earlier, I followed a ZendCast that allowed you to use jQuery to detect and display to users problem with their form.
However, file fields always return: fileUploadErrorIniSize (File 'image_front_url' exceeds the defined ini size" even if the file is within size limits.
TPL For Forms:
<?php $this->headScript()->captureStart(); ?>
$(function() {
$('.zend_form input, .zend_form textarea').blur(function() {
var formElementId = ($(this).parent().prev().find('label').attr('for'));
doValidation(formElementId);
});
});
function doValidation(id) {
var url = '/<?php echo MODULE; ?>/json/validateform/form_name/<?php echo get_class($this->form); ?>';
var data = {};
$('.zend_form input, .zend_form textarea').each(function() {
data[$(this).attr('name')] = $(this).val();
});
$.post(url, data, function(resp) {
$('#'+id).parent().find('.errors').remove();
$('#'+id).parent().append(getErrorHtml(resp[id], id));
}, 'json');
};
function getErrorHtml(formErrors, id) {
var o = '';
if (formErrors != null) {
var o = '<ul id="errors-'+id+'" class="errors">';
for (errorKey in formErrors) {
o += '<li>'+formErrors[errorKey]+'</li>';
}
o += '</ul>';
}
return o;
}
<?php $this->headScript()->captureEnd(); ?>
<?php
if (is_object($this->form) && $this->form->getErrorMessages()) {
echo $this->partial('partials/errors.phtml', array('errors' => $this->form->getErrorMessages(), 'translate' => $this->translate));
}
?>
<?php if (isset($this->errorMsg)) { ?>
<p><?php echo $this->errorMsg; ?></p>
<?php } ?>
<?php echo $this->form; ?>
Which is directed to
<?php
class Administration_JsonController extends Zend_Controller_Action {
public function validateformAction() {
$form_name = $this->_getParam('form_name');
$form = new $form_name();
$data = $this->_getAllParams();
$form->isValidPartial($data);
$json = $form->getMessages();
$this->_helper->json($json);
}
}
Example of returned json:
{"name":{"isEmpty":"Value is required and can't be empty"},"name_url":{"isEmpty":"Value is required and can't be empty"},"image_site_url":{"fileUploadErrorIniSize":"File 'image_site_url' exceeds the defined ini size"},"image_url":{"fileUploadErrorIniSize":"File 'image_url' exceeds the defined ini size"},"image_front_url":{"fileUploadErrorIniSize":"File 'image_front_url' exceeds the defined ini size"},"image_back_url":{"fileUploadErrorIniSize":"File 'image_back_url' exceeds the defined ini size"}}
I noticed a few people had this issue and they said that isValidPartial fixes it, so I changed
$form->isValid($data);
to
$form->isValidPartial($data);
but it didn't fix this issue.
Any ideas?

The problem is that you can't treat file fields in the same manner as regular text fields.
When you call $('input').val(), you get an actual text value for the text field, but for the file field you get the file name - and not the file contents.
Then your script tries to validate your file name as a file and, apparently, fails. In order for file validator to succeed you need to pass actual file contents to the script.
So, basically, you need to upload a file asynchronously to the server to perform all the necessary validations.
Unfortunately, uploading files via Ajax is not quite a trivial thing to do. Your basic options are uploading files via iFrame or swfObject. You can take a look at the broad selection of plugins suitable for this purpose here.
My personal choice for asynchronous file upload would be file-uploader jQuery plugin.

Are you putting an Encrypt type on your form?
I have found two different forum posts about this, including a stack post:
odd Zend_Form_Element_File behavior
You need to add enctype="multipart/form-data" to your form tag.
Basically what is happening is the form is using its default "application/x-www-form-urlencoded" method of encryption before it is sent to the server. File uploading is not supported with this method.