CMS Series:Joomla and Drupal

本文介绍了 Joomla 中插件的功能及工作原理。插件作为 Joomla 扩展的一种,通过触发特定事件来提供附加功能。文章还解释了 Joomla 如何利用 PHP 语言运行,并探讨了模板区域的定义方式。

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A pluginis a kind of joomla extension. Plugins provide functions which areassociated with trigger events. Joomla provides a set of coreplugin events, but any extension can fire events. When a particularevents occurs, all plugin functions of the type associated with theevent are executed in sequence. This is a powerful way of extendingthe functionality of the joomla framework. It also offers extensiondevelopers a wat to allow other extensions to respond to theiractions, making extension extensible.


Thejoomla plugin architecture follows the observer design pattern. Alluser templates installed on a joomla site are stored in thetemplate directory, which is located at the root directory of ajoomla site.


Joomlaoperates directly with the php language and the joomla applicationitself is a framework of php classes. By addressing some of thejoomla objects such as Jdocument and JdocumentHTML in your templatecode, you can render output of modules and components, as well asretrieve information about the current executionenvironment.



A regionis essentially a section of the page on your site. Your can defineas many regions as you wish in your .info file, but you mustinclude page_bottom,page_top,help and content in your .info file,as core requires those regions to function properly. The next stepis to update your page.tpl.php file to address your newregions.

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