Book Image

Catalyst 5.8: the Perl MVC Framework

By : Antano Solar John
Book Image

Catalyst 5.8: the Perl MVC Framework

By: Antano Solar John

Overview of this book

<p>Many web applications are implemented in a way that makes developing them difficult and repetitive. Catalyst is an open source Perl-based Model-View-Controller framework that aims to solve this problem by reorganizing your web application to design and implement it in a natural, maintainable, and testable manner, making web development fun, fast, and rewarding.<br /><br />This book teaches you how to use Catalyst to weave the various components involved in a web application, using methods and tools you personally prefer along with recommendations and details on the most popularly used objects like the DBIX ORM, TT2 Template, and Moose.<br /><br />This book will take you from how the MVC pattern simplifies creating quality applications to how Catalyst allows you to tap this power instantly. It explains advanced design patterns and concludes with the improvements that Moose brings to all this. It also incorporates valuable suggestions and feedback received from the community members and our customers. By the end of the book, you will be able to build clean, scalable, and extendable web applications. This book embodies Catalyst's philosophies of Do It Yourself and Don't Repeat Yourself.</p>
Table of Contents (16 chapters)
Catalyst 5.8
Credits
About the Author
About the Reviewer
Preface
7
Hot Web Topics
Index

Understanding the interface to the database


The exact files generated (inside lib/AddressBook) are:

  • Model/AddressDB.pm: The actual Model that Catalyst uses. It's simply a stub that points DBIx:: Class at the Schema/AddressDB.pm schema. This file also contains the database details like the type of database, driver used, database name, and any username and password, as required.

  • Schema/AddressDB.pm: This is the schema that the Model points to. This is another stub that automatically loads everything in the subdirectory /AddressDB.

  • Schema/AddressDB/Result/People.pm and Schema/AddressDB/Result/Addresses.pm: This is where the real schema data is stored. Each of these files will declare a table name (so that Perl knows that People.pm is the people table in the database) and the column definitions. Relationships between tables are added here, as are any specific access methods you'd like to add. Accessing a column's data by name is available by default, so most people won't need to add their own...