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J1.5

Creating a content plugin

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Contents

Description

XML file

The XML file is named the same as the PHP file, and is one of the two required files. Always start off with the XML tag and define that it is written in a UTF-8 format.

<?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE install PUBLIC 
  "-//Joomla! 1.5//DTD plugin 1.0//EN" "http://dev.joomla.org/xml/1.5/plugin-install.dtd">

To define that the plugin has to be a system plugin, add this line:

<install version="1.5" type="plugin" group="search">

The type will define it is a Plugin, the group defines the Plugin is in the group of Search Plugins.

After that, add some information about yourself and the Plugin, like this:

<name>Name of your Search Plugin</name>
<creationDate>Created Date</creationDate>
<author>Your name</author>
<authorEmail>Your e-mail address</authorEmail>
<authorUrl>Your website</authorUrl>
<copyright>Copyright</copyright>
<license>License, for example GNU/GPL</license>
<version>Version of the plugin</version>
<description>Description of the Plugin; showed with installation and when editing 
the Plugin in the Plugin Manager</description>

And now include your PHP file to the Search Plugin. The name of this file should be the same as the name of this XML file. Put this name also behind the plugin="" part.

You could also add more files for your plugin, for example an image. Just add another row between <files> and </file>, and then place the file between <filename> tags.

<files>
   <filename plugin="nameofplugin">nameofplugin.php</filename>
</files>

For the internationalization, we will use language files. This is not required, but people from other countries will love it they can easily translate your plugin to their own language. The language tags can be found here: [1] (use the ISO 639-1 column) and here: [2]

<languages>
   <language tag="en-GB">language/en-GB/en-GB.plg_search_nameofplugin.ini</language>
</languages>

Optionally, you could add some parameters to the Plugin. These will look like this:

<params>
   <param name="paramname" type="typeofparameter" default="defaultsetting" label="title" description="description"/>
</params>
  • Param name: The name of the parameter. You will need this when creating the PHP file.
  • Param type: You could choose between several types of parameters. Look at this document to learn something about the different types: [3]
  • Param default: The default setting for this parameter.
  • Param label: The name of this parameter displayed in the edit screen of this Plugin in the Plugin Manager.
  • Param description: The text which appears as a tool tip for this parameter.

And do not forget to end your XML file with the following tag:

</install>

PHP file - Example 1

PHP file - Example 2

INI file(s)

Coding examples

Quick tips