Difference between revisions of "Developing a MVC Component/Adding a variable request in the menu type"

From Joomla! Documentation

< J2.5:Developing a MVC Component
Line 146: Line 146:
[[Developing a Model-View-Controller (MVC) Component for Joomla!1.6 - Part 03|Prev: Adding a model to the site part]]
[[Developing a Model-View-Controller (MVC) Component for Joomla!1.6 - Part 03|Prev: Adding a model to the site part]]
[[Developing a Model-View-Controller (MVC) Component for Joomla!1.6 - Part 03|Prev: Using the database]]
== Contributors ==
== Contributors ==

Revision as of 09:02, 19 November 2010

Documentation all together tranparent small.png
Under Construction

This article or section is in the process of an expansion or major restructuring. You are welcome to assist in its construction by editing it as well. If this article or section has not been edited in several days, please remove this template.
This article was last edited by Cdemko (talk| contribs) 5 years ago. (Purge)


Articles in this series


This tutorial is part of the Developing a Model-View-Controller (MVC) Component for Joomla!1.6 tutorial. You are encouraged to read the previous parts of the tutorial before reading this.

Adding a variable request in the menu type

For the moment, the displayed message is always Hello World!. Joomla!1.6 gives the possibility to add parameters to menu types. In our case, this is done in the site/views/helloworld/tmpl/default.xml file:


<?xml version="1.0" encoding="utf-8"?>
	<layout title="com_helloworld_HelloWorld_View_Default_Title">
	<fields name="request">
		<fields name="request">
				<option value="1">Hello World!</option>
				<option value="2">Good bye World!</option>

Note two important information:

  • the request group that indicates mandatory fields
  • the array parameter that indicates that these parameters will be added in the request URL

The model has to be modified in order to choose between the two different messages:


// No direct access to this file
defined('_JEXEC') or die('Restricted access');
// import Joomla modelitem library
// inherit the JModelItem class
class HelloWorldModelHelloWorld extends JModelItem
	 * @var string msg
	protected $msg;
	 * Get the message
	 * @return string The message to be displayed to the user
	public function getMsg() 
		if (!isset($this->msg)) 
			$id = JRequest::getInt('id');
			switch ($id) 
			case 2:
				$this->msg = 'Good bye World!';
			case 1:
				$this->msg = 'Hello World!';
		return $this->msg;

Also modify your helloworld.xml file to indicate the new version:


<?xml version="1.0" encoding="utf-8"?>
<extension type="component" version="1.6.0" method="upgrade">
	<name>Hello World!</name>
	<creationDate>November 2009</creationDate>
	<author>John Doe</author>
	<copyright>Copyright Info</copyright>
	<license>License Info</license>
	<description>Description of the Hello World component ...</description>
	<files folder="site">
		<menu>Hello World!</menu>
		<files folder="admin">

You can test this variable request by putting index.php?option=com_helloworld&id=1 or index.php?option=com_helloworld&id=2 in your browser address.

Packaging the component

Content of your code directory

Create a compressed file of this directory or directly download the archive and install it using the extension manager of Joomla!1.6. You can add a menu item of this component using the menu manager in the backend.


Prev: Adding a model to the site part Prev: Using the database