Book Image

ChronoForms 3.1 for Joomla! site Cookbook

By : Bob Janes
Book Image

ChronoForms 3.1 for Joomla! site Cookbook

By: Bob Janes

Overview of this book

Joomla! is a fantastic way to create a dynamic CMS. Now you want to go to the next step and interact with your users. Forms are the way you ask questions and get replies. ChronoForms is the extension that lets you do that and this book tells you how. From building your first form to creating rich form based applications we will cover the features that ChronoForms offers you in a clear hands-on way. Drawing on three years daily experience using ChronoForms and supporting users there is valuable help for new users and experienced developers alike. We will take you through form development step by step: from creating your first form using ChronoForms’ built-in drag-and-drop tool; validating user input; emailing the results; saving data in the database, showing the form in your Joomla! site and much more.Each chapter addresses a topic like ‘validation’ or ‘email’ and the recipes in the chapter each address a different user question from the beginners’ question ‘How do I set up an email?’ through to more advanced questions like using some PHP to create a custom email Subject line.Over eight chapters and eighty recipes we cover all of the ‘Frequently Asked Questions’ that new users and developers have about using ChronoForms. The recipe structure allows you to pick and choose just the solution that you need.
Table of Contents (17 chapters)
ChronoForms 3.1 for Joomla! Site Cookbook
Credits
About the Author
About the Reviewer
Preface

Creating a double drop-down


A 'double drop-down' is a pair of linked drop downs where the options in the second drop-down depend on the selection in the first drop-down.

As an example, this cookbook has a series of chapters, each of which contain several recipes. We might have a list of chapters in the first drop-down and then show the recipes from the selected chapter in the second drop-down.

For simplicity here we'll just use two chapters each with three recipes:

There are two fundamentally different ways of approaching this recipe. The first is to load all of the options into the Form HTML before the page is sent to the browser and to hide the unwanted options; the second is to load none of the options but to use an AJAX request to get the options we need when we need them.

Both approaches are useful in different situations. Where there are relatively few options, as there are with the book, the "load...