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Table Of Contents

Learning Joomla! 1.5 Extension Development - Second Edition

Learning Joomla! 1.5 Extension Development

Overview of this book

Preface

Preface

What this book covers

Who is this book for

Conventions

Reader feedback

Customer support

Free Chapter

1. Joomla! Extension Development: An Overview

1. Joomla! Extension Development: An Overview

Why extend Joomla!?

How to extend Joomla!

Topic overview

Our example project

Summary

2. Getting Started with Component Development

2. Getting Started with Component Development

Joomla!'s component structure

Joomla!'s division of frontend and backend

Registering your component in the database

Creating toolbars

Summary

3. Backend Development

3. Backend Development

Creating the database table

Coding with MVC

Creating the review form

Processing the data

Creating a list screen

Editing records

Summary

4. Frontend Development

4. Frontend Development

Listing the reviews

Displaying a review

Generating search-engine-friendly links

Adding comments

Displaying comments

Summary

5. JTable, JHTML, and JUser

5. JTable, JHTML, and JUser

Overriding JTable methods

Adding ordered records

Recording traffic

Checking out and checking in records

Getting user information

Generating elements with JHTML

Setting ordering

Summary

6. Module Development

6. Module Development

Registering the module in the database

Creating and configuring a basic module

Recruiting some helpers

Trying some different layouts

Mixing it up

Summary

7. Expanding the Project

7. Expanding the Project

Publishing records

Deleting records

Adding Apply

Requiring specific fields

Using pagination to break up long lists

Searching

Migrating toolbars to views

Managing comments

Summary

8. Using JavaScript Effects

8. Using JavaScript Effects

Modal boxes

Tool tips

Sliding panes

Customizing Google Maps

Using jQuery

Summary

9. Behind the Scenes: Plug-ins

9. Behind the Scenes: Plug-ins

Database queries

A simple link plug-in

What events can be registered?

An information box plug-in

Searching the reviews

Summary

10. Configuration Settings

10. Configuration Settings

Adding parameters to extensions

Parameters for modules

Parameters for plug-ins

Parameters for components

Summary

11. Email, Languages, and JFile

11. Email, Languages, and JFile

Sending emails

Managing languages

Creating translations

Handling file uploads

Summary

12. Packing Everything Together

12. Packing Everything Together

Listing all of the files

Packaging the module

Packaging the plug-ins

Packaging the component

Including SQL queries

Creating backend menu items

Extra installation scripts

Distribution

Summary

Index

Index

Displaying comments

After saving the code files, you will be able to submit the form and return to the review. However, nothing will appear to happen as we do not have the code in place to display the comments. On other web sites, you will often see that the content is directly followed by comments, which are also followed by a form for adding more comments.

We will follow the same style in our example. To support this change in the view, we first need to create a model to load the comments. Open the single.php file in the /components/com_restaurants/models folder, and add the following code:

<?php
defined( '_JEXEC' ) or die( 'Restricted access' );
jimport('joomla.application.component.model');
class RestaurantsModelSingle extends JModel
{
var $_comments = null;
function &getComments()
{
$id = JRequest::getInt('id', 0);
if (empty($this->_comments)) {
$query = "SELECT full_name, comment_date, comment_text FROM #__reviews_comments WHERE...

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Programming languages

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