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

Resizing and copying image files


Image files are probably the most commonly uploaded files and often you want to use these files in your site. However, users are not always good at following directions about the sizes or types that you want.

Emmanuel Danan wrote the ChronoForms plug-in that can handle image resizing and a few other useful things. The plug-in has been updated to work with the current versions of ChronoForms and is included as a part of the installation package.

Note

Just to avoid any problems later, the plug-in will only work with one file upload input on any form. If you have multiple files to be uploaded then some more work will be required.

Getting ready

We already have a form with a file upload field that will accept jpg and png image files, so we'll use a new copy of that.

Note

Please ensure that you have a recent version of the plug-in; some of the earlier versions have a bug in the way they handle file names.

You should also check that your site has the PHP GD Graphics...