Joomla! Documentation - User contributions [en]

Archived:Developing a MVC Component/Introduction

2014-01-03T22:02:40Z

Johan.e.hogdahl: /* Requirements */

{{:J2.5:Developing a MVC Component}}

== Requirements ==
You need Joomla! 2.5 (with PHP, MySQL, Apache and Microsoft II) or greater for this tutorial.

It will help you much if you are running an local instance of Joomla on your computer.
Then backup librarys map tree and put in your own debug code there.
Very much tracing can be done in controller and view code.
You can put a lot of 'error_log(...)' and you can also combine it with 'print_r(debug_backtrace(),true)' to get a better understanding of what really happens behind the surface. You will be able to follow your programs steps in apache's error log.

== Introduction ==
Joomla! 2.5 is constructed using three different applications:
* installation (used for installing Joomla)
* administrator (used for managing content)
* public (used for displaying content)

The installation application is used once. The administrator and public are used through the concept of ''components''. Each component has two entry points:
* one is located in the ''components'' directory (it is used for displaying content)
* one is located in the ''administrator/components'' directory (it is used for managing content)

Both are called ''com_componentname/componentname.php'' (the ''com_'' prefix is a historical trace)

== Contributors ==
*[[User:cdemko|Christophe Demko]]

[[Category:Development]]
[[Category:Joomla! 1.6]]
[[Category:Joomla! 1.7]]
[[Category:Joomla! 2.5]]

Archived:Developing a MVC Component/Adding backend actions

2014-01-03T21:45:44Z

Johan.e.hogdahl: /* Adding a toolbar */

{{version/tutor|2.5}}
{{Chunk:Developing a Model-View-Controller (MVC) Component for Joomla!2.5 - Contents}}

== Introduction ==
This tutorial is part of the [[Developing a Model-View-Controller (MVC) Component for Joomla!2.5]] tutorial. You are encouraged to read the previous parts of the tutorial before reading this.

== Adding a toolbar ==
In Joomla, the administrator interacts generally with components through the use of a toolbar. In the file ''admin/views/helloworlds/view.html.php'' put this content. It will create a basic toolbar and a title for the component.

The args used in ex. JToolBarHelper::addNew is used to set a controller instance which will be used after button is clicked.

<span id ="admin/views/helloworlds/view.html.php">
''admin/views/helloworlds/view.html.php''
<source lang="php">
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import Joomla view library
jimport('joomla.application.component.view');

/**
* HelloWorlds View
*/
class HelloWorldViewHelloWorlds extends JView
{
/**
* HelloWorlds view display method
* @param string $tpl The name of the template file to parse; automatically searches through the template paths.
*
* @return mixed A string if successful, otherwise a JError object.
*/
function display($tpl = null)
{
// Get data from the model
$items = $this->get('Items');
$pagination = $this->get('Pagination');

// Check for errors.
if (count($errors = $this->get('Errors')))
{
JError::raiseError(500, implode('<br />', $errors));
return false;
}
// Assign data to the view
$this->items = $items;
$this->pagination = $pagination;

// Set the toolbar
$this->addToolBar();

// Display the template
parent::display($tpl);
}

/**
* Setting the toolbar
*/
protected function addToolBar()
{
JToolBarHelper::title(JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLDS'));
JToolBarHelper::deleteList('', 'helloworlds.delete');
JToolBarHelper::editList('helloworld.edit');
JToolBarHelper::addNew('helloworld.add');
}
}
</source>
</span>

You can find other classic backend actions in the ''administrator/includes/toolbar.php'' file of your Joomla installation.

Since the view can perform some actions, we have to add some input data. With your favorite file manager and editor, put in the file ''admin/views/helloworlds/tmpl/default.php''

<span id="admin/views/helloworlds/tmpl/default.php">
''admin/views/helloworlds/tmpl/default.php''
<source lang="php">
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted Access');
// load tooltip behavior
JHtml::_('behavior.tooltip');
?>
<form action="<?php echo JRoute::_('index.php?option=com_helloworld'); ?>" method="post" name="adminForm" id="adminForm">
<table class="adminlist">
<thead><?php echo $this->loadTemplate('head');?></thead>
<tfoot><?php echo $this->loadTemplate('foot');?></tfoot>
<tbody><?php echo $this->loadTemplate('body');?></tbody>
</table>
<div>
<input type="hidden" name="task" value="" />
<input type="hidden" name="boxchecked" value="0" />
<?php echo JHtml::_('form.token'); ?>
</div>
</form>
</source>
</span>

== Adding specific controllers ==
Three actions have been added:
* ''helloworlds.delete''
* ''helloworld.edit''
* ''helloworld.add''
read more about [[JController_and_its_subclass_usage_overview|subcontrollers...]]

These are compound tasks (''controller''.''task''). So two new controllers ''HelloWorldControllerHelloWorlds'' and ''HelloWorldControllerHelloWorld'' have to be coded.

<span id="admin/controllers/helloworlds.php">
''admin/controllers/helloworlds.php''
<source lang="php">
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import Joomla controlleradmin library
jimport('joomla.application.component.controlleradmin');

/**
* HelloWorlds Controller
*/
class HelloWorldControllerHelloWorlds extends JControllerAdmin
{
/**
* Proxy for getModel.
* @since 2.5
*/
public function getModel($name = 'HelloWorld', $prefix = 'HelloWorldModel')
{
$model = parent::getModel($name, $prefix, array('ignore_request' => true));
return $model;
}
}
</source>
</span>

<span id="admin/controllers/helloworld.php">
''admin/controllers/helloworld.php''
<source lang="php">
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import Joomla controllerform library
jimport('joomla.application.component.controllerform');

/**
* HelloWorld Controller
*/
class HelloWorldControllerHelloWorld extends JControllerForm
{
}
</source>
</span>

== Adding an editing view ==
With your favorite file manager and editor, put a file ''admin/views/helloworld/view.html.php'' containing:

<span id="admin/views/helloworld/view.html.php">
''admin/views/helloworld/view.html.php''
<source lang="php">
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import Joomla view library
jimport('joomla.application.component.view');

/**
* HelloWorld View
*/
class HelloWorldViewHelloWorld extends JView
{
/**
* display method of Hello view
* @return void
*/
public function display($tpl = null)
{
// get the Data
$form = $this->get('Form');
$item = $this->get('Item');

// Check for errors.
if (count($errors = $this->get('Errors')))
{
JError::raiseError(500, implode('<br />', $errors));
return false;
}
// Assign the Data
$this->form = $form;
$this->item = $item;

// Set the toolbar
$this->addToolBar();

// Display the template
parent::display($tpl);
}

/**
* Setting the toolbar
*/
protected function addToolBar()
{
$input = JFactory::getApplication()->input;
$input->set('hidemainmenu', true);
$isNew = ($this->item->id == 0);
JToolBarHelper::title($isNew ? JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_NEW')
: JText::_('COM_HELLOWORLD_MANAGER_HELLOWORLD_EDIT'));
JToolBarHelper::save('helloworld.save');
JToolBarHelper::cancel('helloworld.cancel', $isNew ? 'JTOOLBAR_CANCEL'
: 'JTOOLBAR_CLOSE');
}
}
</source>
</span>

This view will display data using a layout.

Put a file ''admin/views/helloworld/tmpl/edit.php'' containing

<span id="admin/views/helloworld/tmpl/edit.php">
''admin/views/helloworld/tmpl/edit.php''
<source lang="php">
<?php
// No direct access
defined('_JEXEC') or die('Restricted access');
JHtml::_('behavior.tooltip');
?>
<form action="<?php echo JRoute::_('index.php?option=com_helloworld&layout=edit&id='.(int) $this->item->id); ?>"
method="post" name="adminForm" id="adminForm">
<fieldset class="adminform">
<legend><?php echo JText::_( 'COM_HELLOWORLD_HELLOWORLD_DETAILS' ); ?></legend>
<ul class="adminformlist">
<?php foreach($this->form->getFieldset() as $field): ?>
<li><?php echo $field->label;echo $field->input;?></li>
<?php endforeach; ?>
</ul>
</fieldset>
<div>
<input type="hidden" name="task" value="helloworld.edit" />
<?php echo JHtml::_('form.token'); ?>
</div>
</form>
</source>
</span>

== Adding a model and modifying the existing one ==

The ''HelloWorldViewHelloWorld'' view asks form and data from a model. This model has to provide a ''getTable'', a ''getForm'' method and a ''loadData'' method (called from the ''JModelAdmin'' controller)

<span id="admin/models/helloworld.php">
''admin/models/helloworld.php''
<source lang="php">
<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');

// import Joomla modelform library
jimport('joomla.application.component.modeladmin');

/**
* HelloWorld Model
*/
class HelloWorldModelHelloWorld extends JModelAdmin
{
/**
* Returns a reference to the a Table object, always creating it.
*
* @param type The table type to instantiate
* @param string A prefix for the table class name. Optional.
* @param array Configuration array for model. Optional.
* @return JTable A database object
* @since 2.5
*/
public function getTable($type = 'HelloWorld', $prefix = 'HelloWorldTable', $config = array())
{
return JTable::getInstance($type, $prefix, $config);
}
/**
* Method to get the record form.
*
* @param array $data Data for the form.
* @param boolean $loadData True if the form is to load its own data (default case), false if not.
* @return mixed A JForm object on success, false on failure
* @since 2.5
*/
public function getForm($data = array(), $loadData = true)
{
// Get the form.
$form = $this->loadForm('com_helloworld.helloworld', 'helloworld',
array('control' => 'jform', 'load_data' => $loadData));
if (empty($form))
{
return false;
}
return $form;
}
/**
* Method to get the data that should be injected in the form.
*
* @return mixed The data for the form.
* @since 2.5
*/
protected function loadFormData()
{
// Check the session for previously entered form data.
$data = JFactory::getApplication()->getUserState('com_helloworld.edit.helloworld.data', array());
if (empty($data))
{
$data = $this->getItem();
}
return $data;
}
}
</source>
</span>

This model inherits from the ''JModelAdmin'' class and uses its ''loadForm'' method. This method searches for forms in the ''forms'' folder. With your favorite file manager and editor, put a file ''admin/models/forms/helloworld.xml'' containing:

<span id="admin/models/forms/helloworld.xml">
''admin/models/forms/helloworld.xml''
<source lang="xml">
<?xml version="1.0" encoding="utf-8"?>
<form>
<fieldset>
<field
name="id"
type="hidden"
/>
<field
name="greeting"
type="text"
label="COM_HELLOWORLD_HELLOWORLD_GREETING_LABEL"
description="COM_HELLOWORLD_HELLOWORLD_GREETING_DESC"
size="40"
class="inputbox"
default=""
/>
</fieldset>
</form>
</source>
</span>

== Packaging the component ==

Content of your code directory
* ''[[#helloworld.xml|helloworld.xml]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_02#site/helloworld.php|site/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_02#site/controller.php|site/controller.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/views/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/views/helloworld/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_04#site/views/helloworld/view.html.php|site/views/helloworld/view.html.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/views/helloworld/tmpl/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#site/views/helloworld/tmpl/default.xml|site/views/helloworld/tmpl/default.xml]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_02#site/views/helloworld/tmpl/default.php|site/views/helloworld/tmpl/default.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/models/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#site/models/helloworld.php|site/models/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/language/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|site/language/en-GB/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_08#site/language/en-GB/en-GB.com_helloworld.ini|site/language/en-GB/en-GB.com_helloworld.ini]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/helloworld.php|admin/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/controller.php|admin/controller.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/sql/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/sql/install.mysql.utf8.sql|admin/sql/install.mysql.utf8.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/sql/uninstall.mysql.utf8.sql|admin/sql/uninstall.mysql.utf8.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/sql/updates/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/sql/updates/mysql/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#admin/sql/updates/mysql/0.0.1.sql|admin/sql/updates/mysql/0.0.1.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/sql/install.mysql.utf8.sql|admin/sql/updates/mysql/0.0.6.sql]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/models/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/models/fields/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/models/fields/helloworld.php|admin/models/fields/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/models/forms/index.html]]''
* ''[[#admin/models/forms/helloworld.xml|admin/models/forms/helloworld.xml]]''
* ''[[#admin/models/helloworld.php|admin/models/helloworld.php]]''
* ''[[#admin/models/helloworlds.php|admin/models/helloworlds.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworlds/index.html]]''
* ''[[#admin/views/helloworlds/view.html.php|admin/views/helloworlds/view.html.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworlds/tmpl/index.html]]''
* ''[[#admin/views/helloworlds/tmpl/default.php|admin/views/helloworlds/tmpl/default.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/views/helloworlds/tmpl/default_head.php|admin/views/helloworlds/tmpl/default_head.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/views/helloworlds/tmpl/default_body.php|admin/views/helloworlds/tmpl/default_body.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_07#admin/views/helloworlds/tmpl/default_foot.php|admin/views/helloworlds/tmpl/default_foot.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworld/index.html]]''
* ''[[#admin/views/helloworld/view.html.php|admin/views/helloworld/view.html.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/views/helloworld/tmpl/index.html]]''
* ''[[#admin/views/helloworld/tmpl/edit.php|admin/views/helloworld/tmpl/edit.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/tables/index.html]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_06#admin/tables/helloworld.php|admin/tables/helloworld.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_08#admin/language/en-GB/en-GB.com_helloworld.ini|admin/language/en-GB/en-GB.com_helloworld.ini]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_08#admin/language/en-GB/en-GB.com_helloworld.sys.ini|admin/language/en-GB/en-GB.com_helloworld.sys.ini]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_01#index.html|admin/controllers/index.html]]''
* ''[[#admin/controllers/helloworld.php|admin/controllers/helloworld.php]]''
* ''[[#admin/controllers/helloworlds.php|admin/controllers/helloworlds.php]]''
* ''[[Developing_a_Model-View-Controller_(MVC)_Component_for_Joomla!2.5_-_Part_08#language/en-GB/en-GB.ini|language/en-GB/en-GB.ini]]''

Create a compressed file of this directory or directly download the [http://joomlacode.org/gf/download/frsrelease/11394/58407/com_helloworld-1.6-part09.zip archive], modify the code in /admin/models/helloworld.php and install it using the extension manager of Joomla. You can add a menu item of this component using the menu manager in the backend.

<span id="helloworld.xml">
''helloworld.xml''
<source lang="xml">
<?xml version="1.0" encoding="utf-8"?>
<extension type="component" version="2.5.0" method="upgrade">

<name>Hello World!</name>

<creationDate>November 2009</creationDate>
<author>John Doe</author>
<authorEmail>john.doe@example.org</authorEmail>
<authorUrl>http://www.example.org</authorUrl>
<copyright>Copyright Info</copyright>
<license>License Info</license>

<version>0.0.9</version>

<description>COM_HELLOWORLD_DESCRIPTION</description>

<install> 
<sql>
<file driver="mysql" charset="utf8">sql/install.mysql.utf8.sql</file>
</sql>
</install>
<uninstall> 
<sql>
<file driver="mysql" charset="utf8">sql/uninstall.mysql.utf8.sql</file>
</sql>
</uninstall>
<update> 
<schemas>
<schemapath type="mysql">sql/updates/mysql</schemapath>
</schemas>
</update>



<files folder="site">
<filename>index.html</filename>
<filename>helloworld.php</filename>
<filename>controller.php</filename>
<folder>views</folder>
<folder>models</folder>
<folder>language</folder>
</files>

<administration>

<menu>COM_HELLOWORLD_MENU</menu>


<files folder="admin">

<filename>index.html</filename>
<filename>helloworld.php</filename>
<filename>controller.php</filename>

<folder>sql</folder>

<folder>tables</folder>

<folder>models</folder>

<folder>views</folder>

<folder>controllers</folder>
</files>

<languages folder="admin">
<language tag="en-GB">language/en-GB/en-GB.com_helloworld.ini</language>
<language tag="en-GB">language/en-GB/en-GB.com_helloworld.sys.ini</language>
</languages>
</administration>

</extension>
</source>
</span>

== Navigate ==

[[Developing a Model-View-Controller (MVC) Component for Joomla!2.5 - Part 08|Prev: Adding language management]]
[[Developing a Model-View-Controller (MVC) Component for Joomla!2.5 - Part 10|Next: Adding decorations to the backend]]

== Contributors ==
*[[User:cdemko|Christophe Demko]]
*[[User:oaksu|Ozgur Aksu]]

[[Category:Development]]
[[Category:Joomla! 1.6]]
[[Category:Joomla! 1.7]]
[[Category:Joomla! 2.5]]

Archived talk:Developing a MVC Component/Adding decorations to the backend

2013-12-31T14:18:56Z

Johan.e.hogdahl: /* Icon name don't matchj */

This is just so overly complicated to implement MVC...

== Delete toolbar item shouldn't work ==

In the example code:

JToolBarHelper::deleteListX('', 'helloworlds.delete');

winds up calling HelloworldsModelHellowworlds->delete() which is a function that doesn't exist in base JModelList class or it's descendant.

Clicking the delete button returns an error.

Changing this to:

JToolBarHelper::deleteListX('', 'helloworld.delete');

results in the delete() function of a JModelAdmin object being called but it doesn't delete the record.

== Joomla 3.x ==

The code no longer works :

JToolBarHelper::deleteListX('', 'helloworlds.delete');
JToolBarHelper::editListX('helloworld.edit');
JToolBarHelper::addNewX('helloworld.add');

Use :
JToolBarHelper::deleteList('', 'helloworlds.delete');
JToolBarHelper::editList('helloworld.edit');
JToolBarHelper::addNew('helloworld.add');

--[[User:Flashmath|Flashmath]] ([[User talk:Flashmath|talk]]) 04:25, 13 July 2013 (CDT)

== Icon names don't match ==

In the example there probably is an error:<br>
In the admin/helloworld.php file<br>

"<br>
// Set some global property<br>
$document->addStyleDeclaration('.icon-48-helloworld {background-image: url(../media/com_helloworld/images/tux-48x48.png);}');<br>
"<br>
it should possible be:<br>
$document->addStyleDeclaration('.icon-helloworld {background-image: url(../media/com_helloworld/images/tux-48x48.png);}');<br>
<br>But i can't be sure about it cause i'm trying to follow this example under joomla3.2<br>
and there are differances, some are natural as Legacy add to classname , others are not :-'(<br>

Archived talk:Developing a MVC Component/Adding decorations to the backend

2013-12-31T14:18:15Z

Johan.e.hogdahl: /* Icon name don't matchj */ new section

This is just so overly complicated to implement MVC...

== Delete toolbar item shouldn't work ==

In the example code:

JToolBarHelper::deleteListX('', 'helloworlds.delete');

winds up calling HelloworldsModelHellowworlds->delete() which is a function that doesn't exist in base JModelList class or it's descendant.

Clicking the delete button returns an error.

Changing this to:

JToolBarHelper::deleteListX('', 'helloworld.delete');

results in the delete() function of a JModelAdmin object being called but it doesn't delete the record.

== Joomla 3.x ==

The code no longer works :

JToolBarHelper::deleteListX('', 'helloworlds.delete');
JToolBarHelper::editListX('helloworld.edit');
JToolBarHelper::addNewX('helloworld.add');

Use :
JToolBarHelper::deleteList('', 'helloworlds.delete');
JToolBarHelper::editList('helloworld.edit');
JToolBarHelper::addNew('helloworld.add');

--[[User:Flashmath|Flashmath]] ([[User talk:Flashmath|talk]]) 04:25, 13 July 2013 (CDT)

== Icon name don't matchj ==

In the example there probably is an error:<br>
In the admin/helloworld.php file<br>

"<br>
// Set some global property<br>
$document->addStyleDeclaration('.icon-48-helloworld {background-image: url(../media/com_helloworld/images/tux-48x48.png);}');<br>
"<br>
it should possible be:<br>
$document->addStyleDeclaration('.icon-helloworld {background-image: url(../media/com_helloworld/images/tux-48x48.png);}');<br>
<br>But i can't be sure about it cause i'm trying to follow this example under joomla3.2<br>
and there are differances, some are natural as Legacy add to classname , others are not :-'(<br>