Joomla! Documentation - User contributions [en]

Archived talk:Creating a file uploader in your component

2011-07-06T23:55:12Z

Yitwail:

Hi

Implementing the SWFUpload Application demo for my component. The joomla document explains only the simple demo (http://docs.joomla.org/Creating_a_file_uploader_in_your_component )

what are the changes i have to do from the joomla doc. How i rewrite the thumbnail picture function for joomla 1.5

I tried so many time but not works out

<?php
// This script accepts an ID and looks in the user's session for stored thumbnail data.
// It then streams the data to the browser as an image

// Work around the Flash Player Cookie Bug
if (isset($_POST["PHPSESSID"])) {
session_id($_POST["PHPSESSID"]);
}

session_start();

$image_id = isset($_GET["id"]) ? $_GET["id"] : false;

if ($image_id === false) {
header("HTTP/1.1 500 Internal Server Error");
echo "No ID";
exit(0);
}

if (!is_array($_SESSION["file_info"]) || !isset($_SESSION["file_info"][$image_id])) {
header("HTTP/1.1 404 Not found");
exit(0);
}

header("Content-type: image/jpeg") ;
header("Content-Length: ".strlen($_SESSION["file_info"][$image_id]));
echo $_SESSION["file_info"][$image_id];
exit(0);
?>

Pls help

Regards
Gopi

== Changed PHP script in Part 5 ==

I made some changes to my own work, before using it. Some tests to use JFile versions and the code is shorter. Return value '''true''' on success or else '''false''' if there was an error.
<source lang="php">
jimport('joomla.filesystem.file');
jimport('joomla.filesystem.folder');

$fieldName = 'file_upload';
$fileTemp = $_FILES[$fieldName]['tmp_name'];
$fileName = JFile::makeSafe( $_FILES[$fieldName]['name'] );
$fileExt = strtolower( JFile::getExt( $fileName ) );
$imageinfo = getimagesize( $fileTemp );
$mimetypes = array( 'image/jpeg', 'image/pjpeg', 'image/png', 'image/x-png', 'image/gif' );
$uploadPath = JPATH_COMPONENT . DS . 'images' . DS . $fileName;

switch ( $_FILES[$fieldName]['error'] ) {
case 1:
echo JText::_( 'FILE LARGER THAN PHP INI ALLOW' );
return false;

case 2:
echo JText::_( 'FILE LARGER THAN HTML FORM ALLOW' );
return false;

case 3:
echo JText::_( 'ERROR PARTIAL UPLOAD' );
return false;

case 4:
echo JText::_( 'ERROR NO FILE' );
return false;

default:
}

if ( $_FILES[$fieldName]['size'] > 2000000 ) {
echo JText::_( 'FILE BIGGER THAN 2MB' );
}

if ( !in_array( $fileExt, explode(',', 'jpeg,jpg,png,gif') ) ) {
echo JText::_( 'INVALID EXTENSION' );
return false;
} else if ( !in_array( $imageinfo['mime'], $mimetypes ) ) {
echo JText::_( 'INVALID FILE TYPE' );
return false;
} else if ( !is_int( $imageinfo[0] ) || !is_int( $imageinfo[0] ) ) {
echo JText::_( 'INVALID FILE SIZE' );
return false;
}

if( !JFile::upload( $fileTemp, $uploadPath ) ) {
echo JText::_( 'ERROR MOVING FILE' );
return false;
}
return true;
</source>

Regards
hasse_bjork

Helpme Please!!

Part 3: Adding The Head Javascript

upload_url: "index.php ?????? ",
post_params:
{
"option" : "com_mycomponent",
"controller" : "?????",
"task" : "????",

Where the code is part 5?

== Suggestion for Part 6 ==

Instead of editing a core file like libraries\joomla\session\session.php I found an alternative. In your component, create a file that looks like this:

<?php

// Restore session that existed prior to flash uplosd

$sn = session_name(); 
if (isset($_COOKIE[$sn]) && isset($_POST[$sn])) { 
$_COOKIE[$sn] = $_POST[$sn]; 
session_id($_POST[$sn]); 
} 

chdir('../..'); 
include('index.php');

Then in part 3, set upload_url equal to the path to the file you just created. It works for me, at least in localhost. What do you think?

regards,
John

Archived talk:Creating a file uploader in your component

2011-07-06T23:37:50Z

Yitwail: /* Suggestion for Part 6 */

Archived talk:Creating a file uploader in your component

2011-07-06T23:31:52Z

Yitwail: Suggestion for Part 6

Hi

Implementing the SWFUpload Application demo for my component. The joomla document explains only the simple demo (http://docs.joomla.org/Creating_a_file_uploader_in_your_component )

what are the changes i have to do from the joomla doc. How i rewrite the thumbnail picture function for joomla 1.5

I tried so many time but not works out

<?php
// This script accepts an ID and looks in the user's session for stored thumbnail data.
// It then streams the data to the browser as an image

// Work around the Flash Player Cookie Bug
if (isset($_POST["PHPSESSID"])) {
session_id($_POST["PHPSESSID"]);
}

session_start();

$image_id = isset($_GET["id"]) ? $_GET["id"] : false;

if ($image_id === false) {
header("HTTP/1.1 500 Internal Server Error");
echo "No ID";
exit(0);
}

if (!is_array($_SESSION["file_info"]) || !isset($_SESSION["file_info"][$image_id])) {
header("HTTP/1.1 404 Not found");
exit(0);
}

header("Content-type: image/jpeg") ;
header("Content-Length: ".strlen($_SESSION["file_info"][$image_id]));
echo $_SESSION["file_info"][$image_id];
exit(0);
?>

Pls help

Regards
Gopi

== Changed PHP script in Part 5 ==

I made some changes to my own work, before using it. Some tests to use JFile versions and the code is shorter. Return value '''true''' on success or else '''false''' if there was an error.
<source lang="php">
jimport('joomla.filesystem.file');
jimport('joomla.filesystem.folder');

$fieldName = 'file_upload';
$fileTemp = $_FILES[$fieldName]['tmp_name'];
$fileName = JFile::makeSafe( $_FILES[$fieldName]['name'] );
$fileExt = strtolower( JFile::getExt( $fileName ) );
$imageinfo = getimagesize( $fileTemp );
$mimetypes = array( 'image/jpeg', 'image/pjpeg', 'image/png', 'image/x-png', 'image/gif' );
$uploadPath = JPATH_COMPONENT . DS . 'images' . DS . $fileName;

switch ( $_FILES[$fieldName]['error'] ) {
case 1:
echo JText::_( 'FILE LARGER THAN PHP INI ALLOW' );
return false;

case 2:
echo JText::_( 'FILE LARGER THAN HTML FORM ALLOW' );
return false;

case 3:
echo JText::_( 'ERROR PARTIAL UPLOAD' );
return false;

case 4:
echo JText::_( 'ERROR NO FILE' );
return false;

default:
}

if ( $_FILES[$fieldName]['size'] > 2000000 ) {
echo JText::_( 'FILE BIGGER THAN 2MB' );
}

if ( !in_array( $fileExt, explode(',', 'jpeg,jpg,png,gif') ) ) {
echo JText::_( 'INVALID EXTENSION' );
return false;
} else if ( !in_array( $imageinfo['mime'], $mimetypes ) ) {
echo JText::_( 'INVALID FILE TYPE' );
return false;
} else if ( !is_int( $imageinfo[0] ) || !is_int( $imageinfo[0] ) ) {
echo JText::_( 'INVALID FILE SIZE' );
return false;
}

if( !JFile::upload( $fileTemp, $uploadPath ) ) {
echo JText::_( 'ERROR MOVING FILE' );
return false;
}
return true;
</source>

Regards
hasse_bjork

Helpme Please!!

Part 3: Adding The Head Javascript

upload_url: "index.php ?????? ",
post_params:
{
"option" : "com_mycomponent",
"controller" : "?????",
"task" : "????",

Where the code is part 5?

== Suggestion for Part 6 ==

Instead of editing a core file like libraries\joomla\session\session.php I found an alternative. In your component, create a file that looks like this:

<?php
/*
* Restore session that existed prior to flash uplosd
*/
$sn = session_name();
if (isset($_COOKIE[$sn]) && isset($_POST[$sn])) {
$_COOKIE[$sn] = $_POST[$sn];
session_id($_POST[$sn]);
}

chdir('../..'); //JPATH_SITE
include('index.php');

Then in part 3, set upload_url equal to the path to the file you just created. It works for me, at least in localhost. What do you think?

regards,
John

J1.5 talk:Developing a MVC Component/Creating an Administrator Interface

2009-05-07T09:18:00Z

Yitwail:

== Renaming Part 4 ==
I checked out the comment below. ;-) Certainly, the multitude of hello(s) is confusing. What I did is to rename most everything.

Whenever there's something like HelloWhateverHello, the first Hello represents the component front-end, and the second represents the view/model. By the way, each view has its own model, which I think is pretty much standard MVC architecture. On the other hand, one controller can control several views, although this example doesn't do so.

Conversely, if you see HellosWhateverHello or HellosWhateverHellos, the first Hellos represents the adminstrative back-end, and the Hello or Hellos at the end refers to the view for editing one greeting or for listing all greetings, respectively. (Replace *Whatever* with Model, View, or Controller as appropriate.)

So, I renamed all this to look like FrontWhateverContent, AdminWhateverEdit, AdminWhateverList, and so on. Then I had to rename directories and files as well, so that models/hello.php became models/content.php in the front-end and models/edit.php in the back-end. Likewise, views/hello/ becomes views/content/ in the front-end and views/edit in the back-end. Also, in the back-end only, models/hellos.php & views/hellos/ become models/list.php & views/list. Lastly, I changed controllers/hello.php to controllers/edit.php, to reflect the change from HellosControllerHello to AdminControllerEdit.

Hope this clears things up a bit. It's a tedious refactoring exercise to do all this renaming, but it *is* doable. Good luck.

== "Hello" Overloaded ==

I'm not sure if anybody checks this, but I'm having a difficult time making my own component out of this document.

The first three chapters of this documentation are great. They are simple and to the point. The fourth, this page, is very confusing.

First off, the word "hello" is way over loaded. In the Creating an Admin Interface there are two models and two views:
Hello and Hellos

It's impossible to know why we need two different models. Why cant we use one model and two views?
Its totally impossible to understand which one gets called when.

I have discovered there are a lot of name conventions used here, but after reading this document over and over, it's still very difficult to know what the conventions are. This is probably stemming from "hello" being way too overloaded.

The method "get()" in JView is called in both views. It is supposed to automatically know which model to use, and which method to call. However, I don't think I followed the naming convention correctly, as it simply is not working (I get empty data with no error).

I think I could untangle the naming conventions myself, but with "hello" so overloaded in this example, I am having no luck guessing.

== Great up to chapter 3 ==

The documentation was great upto chapter 3. Got confused in 4th chapter.

Also, this doesn't cover how to create sub menus for a component [[Image:http://www.vojtechovsky.net/joomla/component/tutorial-joomla-1.5-free-component.png]]

== Suggestions for improvement ==

*This is a really long and tedious tutorial with a lot of very useful information in it. I think it would help to break it down into parts or creating separate tutorials covering this material.
[[Link title]]

== REALLY GOOD DOCUMENTATION ==

Apart from a small error in part 4 which I have now corrected

did read:

$row =& $this->items[$i];
$checked = JHTML::_( 'grid.id', $i, $row->id );
$link = JRoute::_( 'index.php?option=com_hello>controller=hello>task=edit>cid[]='. $row->id );

now reads:

$row =& $this->items[$i];
$checked = JHTML::_( 'grid.id', $i, $row->id );
$link = JRoute::_( 'index.php?option=com_hello&controller=hello&task=edit&cid[]='. $row->id );

[[User:Jamesconroyuk|James Conroy]] 16:29, 16 February 2009 (UTC)