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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

Setting ordering

Several of Joomla!'s core components allow you to order records in a list by clicking on arrows in the Ordering column. We can accomplish the same by using Joomla!'s JPagination class, and the move() member function of JTable. Before doing this, we should start displaying the records in the correct order. Make the highlighted adjustment to the query in the /administrator/components/com_critic/views/critics/view.html.php file:

$db =& JFactory::getDBO();
$db->setQuery('SELECT * FROM #__critic ORDER BY ordering');

$rows = $db->loadObjectList();

Save the file, and then reload /administrator/index.php?option=com_critic in the browser. Your screen should now have the records sorted by the Ordering column and should look similar to the following:

Setting orderingelements generating, JHTML usedaccess, setting

Next, we need to bring in the JPagination class that will help us generate the up and down arrows on the list screen. Again, in the views/critics/view.html.php file, add the following highlighted code:

...

Visually different images

CONTINUE READING

83

Tech Concepts

36

Programming languages

73

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