Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and the publisher was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals.
The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein.
The publisher offers excellent discounts on this book when ordered in quantity for bulk purchases or special sales, which may include electronic versions and/or custom covers and content particular to your business, training goals, marketing focus, and branding interests. For more information, please contact:
U.S. Corporate and Government Sales
(800) 382-3419
[email protected]
For sales outside the United States please contact:
International Sales
[email protected]
Visit us on the Web: informit.com/aw
Library of Congress Cataloging-in-Publication Data
Olsen, Russ.
Design patterns in Ruby/Russ Olsen.
p. cm.
Includes index.
ISBN 978-0-321-49045-2 (hbk. : alk. paper)
1. Ruby on rails (Electronic resource) 2. Software patterns. I. Title.
QA76.64.O456 2007
005.1’17—dc22
2007039642
Copyright © 2008 Pearson Education, Inc.
All rights reserved. Printed in the United States of America. This publication is protected by copyright, and permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permissions, write to:
Pearson Education, Inc.
Rights and Contracts Department
501 Boylston Street, Suite 900
Boston, MA 02116
Fax: (617) 848-7047
This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/).
ISBN-13: 978-0-321-49045-2
ISBN-10: 0-321-49045-2
Text printed in the United States on recycled paper at Courier in Westford, Massachusetts.
Second printing, October 2008
Editor-in-Chief: Karen Gettman
Acquisitions Editor: Chris Guzikowski
Managing Editor: John Fuller
Project Editor: Lara Wysong
Copy Editor: Jill Hobbs
Indexer: Ted Laux
Proofreader: Deborah Prato
Composition: International Typesetting and Composition