Joomla has a feature where it loads the a minified javascript file and the uncompressed version when the site is in debug mode.
I have named both my files correctly and am include it as follows:
JHtml::_('script', JUri::root() . 'path_to_file/jquery-sortable.js');
When I put the site in debug mode, it does not load the uncompressed file.
However, If I use the following instead, it works fine:
JHtml::_('script', 'path_to_file/jquery-sortable.js');
Now I'm not sure whether this is a bug in Joomla or not, but I cannot find any information online regarding this. I would like to use JURI::root() in the path.
Does anyone have any information on this?
Indeed, if the script URL begins with http, the code that is responsible for including the uncompressed version (i.e, remove the min. segment if such exists or add -uncompressed otherwise) is ignored.
The source for this behavior:
JHtml::includeRelativeFiles() in libraries/cms/html/html.php:298
protected static function includeRelativeFiles($folder, $file, $relative, $detect_browser, $detect_debug)
{
// If http is present in filename
if (strpos($file, 'http') === 0)
{
$includes = array($file);
}
else
//process the script sourch.
}
...
}
Most of the script files, including frameworks, are included as relative paths. I guess that this behavior is meant to prevent remote resources from getting 404ed.
Related
I am creating my first Grafana panel plugin to display GLG grphics. I am using react simple panel plugin.
For GLG implementation I am having GLG static library(can't install with npm). So I added my GLG library files(GlgCE.js, GlgTooklitCE.js, gunzip.min.js) in external folder. I am importing all these library files in SimplePanel.tsx file. One of my step is to decompress created the data.In my GlgToolkit.js I am having below code which creates object for Zlib.Gunzip and decompress the data which is in Uint8Array format.
tproto.__glg_gunzip_hook__ = (data) => {
var gunzip = new Zlib.Gunzip(data);
return gunzip.decompress();
};
My problem is that above code is not working, while debugging I can say its unable to create object for Zlib.Gunzip. It returing undefine for gunzip variable, and data is not getting decompress.
I will be great if anybody caan help me on this.How can one library file can communicate with other(in this case gunzip.min.js).
I found my own solution, I imported the gunzip.min.js file in my library file.
import * as Zlib from './gunzip.min.js';
I am using the PDF.js library to display PDf files within my site (using the pdf_viewer.js to display documents on-screen), but the PDF files I am displaying are confidential and I need to be able to show them within the site but block non-authorized public folks from being able to view the same files just by typing in theie URLs and seeing them show up right in their browser.
I tried to add the Deny from all line in my htaccess file, but that also of courfse blocked the viewer from showing the docs, so that seems to be a no-go. Clearly anyone could simply look at inspector and see the pdf file that is being read by the viewer, so it seems a direct URL is not going to be secure in any way.
I did read about PDF.js being able to read binary data, but I have no knowledge of how I might read in a PDF in my own file system and prep it for use by the library, eveen if that means it is all a bit slower in loading to get the file contents and prep it on the fly.
Anyone have a solution that allows PDFJS to work without revealing the source PDF URL, or to otherwise read the file using local file calls?
Okay, after some testing, the solution is very easy:
Get the PDF data using an Ajax-called function that can figure out what actual file is to be viewed.
In that PHP file...
Read the file into memory, using fopen and fread normally.
Convert to base64 using the base64_encode
Pass that string back to the calling Javascript.
In the original calling function, use the following to convert the string to a Uint array and then pass that to the PDFJS library...
## The function that turns the base64 string into whatever a Uint8 array is...
function base64ToUint8Array(base64) {
var raw = atob(base64);
var uint8Array = new Uint8Array(raw.length);
for (var i = 0; i < raw.length; i++) {
uint8Array[i] = raw.charCodeAt(i);
}
return uint8Array;
}
## the guts that gets the file data, calls the above function to convert it, and then calls PDF.JS to display it
$.ajax({
type: "GET",
data: {file: <a file id or whatever distinguishes this PDF>},
url: 'getFilePDFdata.php', (the PHP file that reads the data and returns it encoded)
success: function(base64Data){
var pdfData = base64ToUint8Array(base64Data);
## Loading document.
PDFJS.getDocument(pdfData).then(function (pdfDocument) {
## Document loaded, specifying document for the viewer and
## the (optional) linkService.
pdfViewer.setDocument(pdfDocument);
pdfLinkService.setDocument(pdfDocument, null);
});
}
});
I just upgraded from cakephp 1.1 to 1.3. I have everything on the site updated and working great, except for creating and downloading zip files.
Here is the code in my accounts_controller.php:
function zip() {
$this->checkSession();
$this->checkUpgradedAccount();
$files = array();
$this->layout="zip";
/*
code where I locate the files to zip, combine them, etc
*/
$tmp_file = "/home/[userdirectory]/tmp/".md5(mktime()).".zip"; //directory name edited
$command = "/usr/bin/zip -j $tmp_file ".implode(" ",$zip_files);
exec($command);
foreach($zip_files as $zf) {
unlink($zf);
}
$file_path = $tmp_file;
$this->set("path",$file_path);
$this->render();
}
When I call this action, however, I get an error:
Error: The requested address '/accounts/zip' was not found on this
server.
It worked just like this in version 1.1. I'm assuming something has changed, but I'm not sure what, and was unable to find anything pertinent in the documentation.
The zip.ctp view file does exists, but it has nothing in it other than: <?php ?>
I suspect something is different with layouts. There is NO "zip.ctp" in the /layouts directory. However, I have changed that line to $this->layout('default'); and it renders a blank page with NO ERROR, but also with no download.
Please direct me on the proper way to download my zip file in cake 1.3. Thanks in advance.
You have two different problems here. That error you're getting is because you don't have a zip layout file. As for your problem with getting the zip file, you should be using the media view class - http://book.cakephp.org/1.3/en/The-Manual/Developing-with-CakePHP/Views.html#media-views
I know that in folder config are file called core.php which I can configure application options as a debug mode, session, cache etc.
But I want do configure file for my application. I want for example configure how many post can be displayed in main page, thubnails size etc.
I think that the best place in config folder but where and when parse thos file in application (bootstrap, AppController another mechanism ?) and what is the best extension .ini or PHP array (for performance reason too). What is the best practice to do this ?
DEFINE OWN CONSTANT FILE
Create a file lets suppose 'site_constants.php' containing some constant variables in app/Config folder. Define the following constants into it:
<?php
define('HTTP_HOST', "http://" . $_SERVER['HTTP_HOST'].'/');
if(HTTP_HOST == 'localhost' || HTTP_HOST == '127.0.0.1')
{
define('SITE_URL', HTTP_HOST.'app_folder_name/');
}
else
{
define('SITE_URL', HTTP_HOST);
}
Include it in app/Config/bootstrap.php
require_once('site_constants.php');
Now you can use it anywhere into your website. And this is also a dynamic.
DEFINE OWN CONFIGURATION FILE
Create a file lets suppose 'my_config.php' containing some constant variables in app/Config folder. Define the constant in the following way:
<?php
$config['PageConfig'] = array('PostPerPage' => 5, 'UserPerPage' => 15);
Then in your app/Controller/AppController.php write the following line in beforeFilter() method:
function beforeFilter()
{
Configure::load('my_config');
}
Now in your controller's method, where you want to access the page number to be listed in your pagination list. You can use it by following code:
$page_config = Configure :: read('PageConfig');
$user_per_page = $page_config['UserPerPage'];
//or
$post_per_page = $page_config['PostPerPage'];
This might looks long process to handle this task, but once done, it will help you in many senses.
Here are the advantages:
you can easily define some more constants (like any file path etc).
you can put all your ajax code into external JS files.
you can directly deploy it onto any server without changing in constants as well as work perfectly onto your localhost.
following standard conventions etc.
CakePHP provides the Configure class for this purpose. See the documentation.
You can use Configure::write($key,$value) in your own config file, and then read the values elsewhere in your application through Configure::read($key). It also allows you to use readers that automate the process and read in external configuration files. CakePHP provides a PHPreader and an INIreader by default and you can create readers to extend it.
Create a new file with configuring variables, like:
Configure::write('Twitter', array(
'consumer_key' => "OTh1sIsY0urC0n5um3rK3Y4T878676",
'consumer_secret' => "OTh1sIsY0ur53cReT76OTIMGjEhiWx94f3LV",
'oauth_access_token' => "12345678-OTh1sIsY0urAcc355K3YT878676Y723n4hqxSyI4",
'oauth_access_token_secret' => "OTh1sIsY0urACC355T0KEnsdjh4T878676FPtRRtjDA29ejYSn"
));
save this file in app/Config/twitter.php
Include that file in app/Config/bootsrap.php:
require_once('twitter.php');
In the Controller (this example 'app/Controller/TwitterController.php'), you can use that like:
$settings = Configure :: read('Twitter');
I am writing an action in a controller where in a certain case, I want to output raw image data directly, and want to set the header content-type appropriate. However I think the header is already being set earlier by CakePHP (I am setting render to be false).
Is there a way to get around this? Thanks!
As said before, CakePHP does not send headers when render is false. Beware though, that any code doing an 'echo' will send headers (except you are using output-buffering). This includes messages from PHP (warnings etc.).
Sending the file can be done in numerous ways, but there are two basic ways:
Send the file using plain PHP
function send_file_using_plain_php($filename) {
// Avoids hard to understand error-messages
if (!file_exists($filename)) {
throw RuntimeException("File $filename not found");
}
$fileinfo = new finfo(FILEINFO_MIME);
$mime_type = $fileinfo->file($filename);
// The function above also returns the charset, if you don't want that:
$mime_type = reset(explode(";", $mime_type));
// gets last element of an array
header("Content-Type: $mime_type");
header("Content-Length: ".filesize($filename));
readfile($filename);
}
Use X-Sendfile and have the Webserver serve the file
// This was only tested with nginx
function send_file_using_x_sendfile($filename) {
// Avoids hard to understand error-messages
if (!file_exists($filename)) {
throw RuntimeException("File $filename not found");
}
$fileinfo = new finfo(FILEINFO_MIME);
$mime_type = $fileinfo->file($filename);
// The function above also returns the charset, if you don't want that:
$mime_type = reset(explode(";", $mime_type));
// gets last element of an array
header("Content-Type: $mime_type");
// The slash makes it absolute (to the document root of your server)
// For apache and lighttp use:
header("X-Sendfile: /$filename");
// or for nginx: header("X-Accel-Redirect: /$filename");
}
The first function occupies one PHP-process / thread while the data is being send and supports no Range-Requests or other advanced HTTP-features. This should therefore only be used with small files, or on very small sites.
Using X-Sendfile you get all that, but you need to know which webserver is running and maybe even a change to the configuration is needed. Especially when using lighttp or nginx this really pays off performance-wise, because these webservers are extremly good at serving static files from disk.
Both functions support files not in the document-root of the webserver. In nginx there are so called "internal locations" (http://wiki.nginx.org/HttpCoreModule#internal). These can be used with the X-Accel-Redirect-Header. Even rate-throtteling is possible, have a look at http://wiki.nginx.org/XSendfile.
If you use apache, there is mod_xsendfile, which implements the feature needed by the second function.
It's not $this->render(false), it's $this->autoRender=false; The header is not sent in the controller action unless you echo something out.
If render is false, cake will not send a header.
You can rely on plain ol' php here.
PNG:
header('Content-Type: image/gif');
readfile('path/to/myimage.gif');
JPEG:
header('Content-Type: image/jpeg');
readfile('path/to/myimage.jpg');
PNG:
header('Content-Type: image/png');
readfile('path/to/myimage.png');