Rappin - Take my money: accepting payments on the web

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Disclaimer: This book is intended only as an informative guide on setting up a financial transaction website. Information in this book is general, and the author, editors, and The Pragmatic Programmers, LLC disclaim all liability for compliance to federal, state, and local laws in connection with the use of this book. This work is sold with the understanding that the author, editors, and The Pragmatic Programmers, LLC do not offer legal, financial, or other professional services. If professional assistance is required, the services of a competent professional person should be sought.

Many people helped me take this book from an idea to a finished project. Among the many who helped are the following:

Katharine Dvorak edited this book and has helped shape the material, make it more consistent, and point out where it needed to be clearer. Susannah Davidson Pfalzer helped get this project started and remains a pleasure to work with.

Several people provided technical reviews and made this a better book with their comments: Zach Briggs, David Copeland, Robin Dunlop, Kenneth Geisshirt, Jeff Holland, Aaron Kalair, Kaan Karaca, Irakli Nadareishvili, Nigel Lowry, Stephen Orr, Martijn Reuvers, Brian Schau, Nell Shamrell, Tibor Simic, Stefan Turalski, and Brian VanLoo.

Ive been fortunate to work at Table XI while writing this book, and I thank them for their support. The project that inspired this book was a Table XI client project, and I benefited from the skill and insight of many of my coworkers as we built it.

This book, and most of my career, would not exist without the generosity of the community of developers who write and maintain the open source tools that I use. Thanks to all of you.

Thanks also to my children, Emma and Elliot. You are amazing and wonderful. My wife Erin is my favorite person. I love you.

A few years ago, I started working on my first web application that required serious payment business logic. The application was a legacy rescue, meaning that the actual core of the payment section already existedthe application already had a payment gateway, which is the third-party service that handles the credit card transaction, and knew how to communicate credit card information.