Developing a MVC Component/Adding a variable request in the menu type/fr
From Joomla! Documentation
< J3.x:Developing a MVC Component
J3.x:Developing a MVC Component/fr
Introduction[edit]
This tutorial is part of the Developing a MVC Component for Joomla! 3.2 tutorial. You are encouraged to read the previous parts of the tutorial before reading this.
[edit]
For the moment, the displayed message is always Hello World!. Joomla!2.5 gives the possibility to add parameters to menu types. In our case, this is done in the site/views/helloworld/tmpl/default.xml file:
site/views/helloworld/tmpl/default.xml
<?xml version="1.0" encoding="utf-8"?>
<metadata>
<layout title="COM_HELLOWORLD_HELLOWORLD_VIEW_DEFAULT_TITLE">
<message>COM_HELLOWORLD_HELLOWORLD_VIEW_DEFAULT_DESC</message>
</layout>
<fields name="request">
<fieldset name="request">
<field
name="id"
type="list"
label="COM_HELLOWORLD_HELLOWORLD_FIELD_GREETING_LABEL"
description="COM_HELLOWORLD_HELLOWORLD_FIELD_GREETING_DESC"
default="1">
<option value="1">Hello World!</option>
<option value="2">Good bye World!</option>
</field>
</fieldset>
</fields>
</metadata>
Two important things to note:
- the request group of fields indicates mandatory fields.
- the name attribute can be passed to the component in the URL. In this case ?option=com_helloworld&id=1 would indicate that you had chosen option 1.
The model has to be modified in order to switch between the two different messages (which is chosen by the user with the field defined above):
site/models/helloworld.php
<?php
/**
* @package Joomla.Administrator
* @subpackage com_helloworld
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
/**
* HelloWorld Model
*
* @since 0.0.1
*/
class HelloWorldModelHelloWorld extends JModelItem
{
/**
* @var string message
*/
protected $message;
/**
* Get the message
* @return string The message to be displayed to the user
*/
public function getMsg()
{
if (!isset($this->message))
{
$jinput = JFactory::getApplication()->input;
$id = $jinput->get('id', 1, 'INT');
switch ($id)
{
case 2:
$this->message = 'Good bye World!';
break;
default:
case 1:
$this->message = 'Hello World!';
break;
}
}
return $this->message;
}
}
Also modify your helloworld.xml file to indicate the new version:
helloworld.xml
<?xml version="1.0" encoding="utf-8"?>
<extension type="component" version="3.2.0" method="upgrade">
<name>Hello World!</name>
<!-- The following elements are optional and free of formatting constraints -->
<creationDate>January 2014</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>
<!-- The version string is recorded in the components table -->
<version>0.0.5</version>
<!-- The description is optional and defaults to the name -->
<description>Description of the Hello World component ...</description>
<update> <!-- Runs on update; New since J2.5 -->
<schemas>
<schemapath type="mysql">sql/updates/mysql</schemapath>
</schemas>
</update>
<!-- Site Main File Copy Section -->
<!-- Note the folder attribute: This attribute describes the folder
to copy FROM in the package to install therefore files copied
in this section are copied from /site/ in the package -->
<files folder="site">
<filename>index.html</filename>
<filename>helloworld.php</filename>
<filename>controller.php</filename>
<folder>views</folder>
<folder>models</folder>
</files>
<administration>
<!-- Administration Menu Section -->
<menu link='index.php?option=com_helloworld'>Hello World!</menu>
<!-- Administration Main File Copy Section -->
<!-- Note the folder attribute: This attribute describes the folder
to copy FROM in the package to install therefore files copied
in this section are copied from /admin/ in the package -->
<files folder="admin">
<!-- Admin Main File Copy Section -->
<filename>index.html</filename>
<filename>helloworld.php</filename>
<!-- SQL files section -->
<folder>sql</folder>
</files>
</administration>
</extension>
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[edit]
Content of your code directory:
- helloworld.xml
- site/helloworld.php
- site/index.html
- site/controller.php
- site/views/index.html
- site/views/helloworld/index.html
- site/views/helloworld/view.html.php
- site/views/helloworld/tmpl/index.html
- site/views/helloworld/tmpl/default.xml
- site/views/helloworld/tmpl/default.php
- site/models/index.html
- site/models/helloworld.php
- admin/index.html
- admin/helloworld.php
- admin/sql/index.html
- admin/sql/updates/index.html
- admin/sql/updates/mysql/index.html
- admin/sql/updates/mysql/0.0.1.sql
Create a compressed file of this directory or directly download the archive 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.
Please create a pull request or issue at https://github.com/joomla/Joomla-3.2-Hello-World-Component for any code descprepancies or if editing any of the source code on this page.