Book Image

ColdFusion 9 Developer Tutorial

By : John Farrar
Book Image

ColdFusion 9 Developer Tutorial

By: John Farrar

Overview of this book

Adobe ColdFusion is an application server, renowned for rapid development of dynamic websites, with a straightforward language (CFML), powerful methods for packaging and reusing your code, and AJAX support that will get developers deep into powerful web applications quickly. However, developing rich and robust web applications can be a real challenge as it involves multiple processes.With this practical guide, you will learn how to build professional ColdFusion applications. Packed with example code, and written in a friendly, easy-to-read style, this book is just what you need if you are serious about ColdFusion.This book will give you clear, concise, and practical guidance to take you from the basics of ColdFusion 9 to the skills that will make you a ColdFusion developer to be reckoned with. It also covers the new features of ColdFusion 9 like ORM Database Interaction and CF Builder.ColdFusion expert John Farrar will teach you the basics of ColdFusion programming, application architecture, and object reuse, before showing you a range of topics including AJAX library integration, RESTful Web Services, PDF creation and manipulation, and dynamically generated presentation files that will make you the toast of your ColdFusion developer town.This book digs deep with the basics, with real-world examples of the how and whys, to get more done faster with ColdFusion 9.
Table of Contents (22 chapters)
ColdFusion 9 Developer Tutorial
Credits
About the Author
About the Reviewers
Preface
Index

Getting data to our edit page


The current page looks similar to the page where we put the form. To get the data from our database onto the page, we need to do a few things here. First, let us change the action of the form tag to product_edit.cfm. We can modify the processing section of the page first, which will make things simpler. Add the following code to your product_edit.cfm page:

<!--- Processing --->
<cfparam name="url.id" default="0">
<cfscript>
  objProduct = createObject("component","product").init(dsn="cfb");
  objProduct.load(url.id);
</cfscript>

We need the default value set so that we do not receive an error message if the page is called without an id. After we set our default, we will see that we have created an object from our CFC object class. This time, we are passing the Data Source Name dsn into the object through the constructor method. This makes our code more portable, and ready for reuse. Once we have an instance, we set the current record using...