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Chapter 16. Hugh and Dave's Online Wines:A Case Study
This chapter is the first of five that outline the major case study
for this book, Hugh and Dave's Online
Wines. It contains an overview of the system requirements,
a walk-through of the complete application, and a pointer to where
the fundamentals of each component are explained in the book. It also
explains most of the components we've developed for
reuse throughout the application.
The material presented in the winestore chapters
doesn't fully explain the application. Also, we
avoid duplicating our discussions of the principles and basic
techniques for building web database applications. Chapter 2 through Chapter 13 are
required background reading to fully understand the implementations.
To make implementing the winestore a little simpler,
we've developed two template classes. They inherit
from PEAR's ITX templates and are designed to give
every winestore page a generic framework. In particular, our form
class includes code for creating form widgets that can report errors
and display previously entered data. We explain how we use these
classes in this chapter, and list the code and the templates. We also
discuss our functions for general-purpose validation, our custom
error handler, database settings, and general-purpose functions and
constants.
Before you begin this chapter, we recommend downloading and
installing the online winestore on a local machine following the
instructions in Appendix A to Appendix C. The best way to understand the code is to
have a local copy of the application, to open the scripts in an
editor, and to walk through the scripts while using the application
with a browser. Modifications of the scripts are encouraged.
Suggestions are welcome by email to hugh@hughwilliams.com.
The source code to the winestore application (and all other code in
this book) can be redistributed as long as it continues to include a
statement that it's from Hugh E. Williams and David
Lane, Web Database Application with PHP and
MySQL, Second Edition, published by
O'Reilly & Associates. You're
welcome to use it for any purpose with one exception: it cannot be
included in any other book, publication, or educational product
without permission from O'Reilly & Associates.
No warranty is attached, and we can't take
responsibility for errors or fitness for use.
