Book Image

Learning Joomla! 1.5 Extension Development: Creating Modules, Components, and Plugins with PHP

By : Joseph L. LeBlanc
Book Image

Learning Joomla! 1.5 Extension Development: Creating Modules, Components, and Plugins with PHP

By: Joseph L. LeBlanc

Overview of this book

<p>Joomla! is the world's hottest open-source content management system, and the winner of the 2006 Open Source CMS Prize.<br /><br />While Joomla! is packed with features, its greatest quality is that it is extremely extensible, allowing any number of complex applications to be cleanly integrated. Shopping carts, forums, social networking profiles, job boards, and real estate listings are all examples of extensions developers have written for Joomla!. All of these can run off one Joomla! site, while only one database, template, and core need to be maintained. When you build an extension to Joomla!, it will inherit the look and feel of the overall site. Any type of program that can be coded in PHP is a potential component waiting to be written!<br /><br />If you're eager to start creating extensions for Joomla!, this book is for you. Walk through the development of complete Joomla! components and modules with this tutorial for PHP programmers. Written for Joomla! version 1.5 and tested against pre-final releases, this book will get you started coding your first extensions as quickly as possible, and adds the features that will make your work look professional!<br /><br />The book builds example extensions to create, find, promote, and cross-link restaurant reviews. A component will handle common data items seen across all reviews such as price range, reservations, cuisine type, and location. Your visitors will be able to search and sort through the reviews; adding their own criteria to zero in on their dining options for the evening. <br /><br />Your modules will highlight new reviews, drawing the attention of frequent visitors. Finally, plugins will pull pieces of the reviews into feature articles and others will integrate them into searches. Even if you don't own a restaurant, you will still find the code applicable to your own development projects, and the skills you develop will make you a Joomla! developer to be reckoned with!</p>
Table of Contents (14 chapters)
Copyright
Credits
About the Author
About the Reviewer
Preface

Joomla!’s Division between Front End and Back End


For all Joomla! components, code empowering the back-end portion is kept away from the front-end code. In some instances, such as the database table class, the back end will use certain files from the front end, but otherwise the two are separate. Security is enhanced as you are less likely to slip the administrative functions into the front-end code. This is an important distinction as the front end and back end are similar in structure.

The following folder diagram shows the Joomla! root with the administrator folder expanded:

Notice that the administrator folder has a structure similar to the root folder. It is important to differentiate between the two, else you may place your code in the wrong folder and it will fail to execute until you move it.