Springer Publishing Ruby on Rails for PHP and Java Developers (2007).pdf

Deepak Vohra

Ruby on Rails

for PHP and

Java Developers

With 202 Figures and 32 Tables

123

Deepak Vohra

dvohra09@yahoo.com

Library of Congress Control Number: 2007929957

ISBN

978-3-540-73144-3 Springer Berlin Heidelberg New York

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Preface

Ruby 1 is an open source programming language that was released in 1995.

Ruby is ranked 10 th in the TIOBE Programming Community index 2 . Ruby

on Rails 3 is an open source web framework that was released in 2004.

Ruby on Rails is being widely adopted because of its simplicity,

maintainability and development speed. Computerworld 4 lists Ruby on

Rails as the one of the top 5 technologies for 2007.

Motivation for this Book

Ruby is often compared with PHP, which is the most commonly used

scripting language, and with Java, which is the most commonly used

programming language. In the trends graph of TIOBE index you might

notice that since the middle of 2006 Ruby shows an increase in usage

while PHP and Java show a decrease in usage. OReilly Radar 5 has noted

the trend towards an increased usage of Ruby on Rails. Statistics aside,

Ruby on Rails has some advantages over PHP, which are discussed below.

1. Ruby on Rails is more object-oriented than PHP, thus providing all

the inherent advantages of an object-oriented language such as

simplicity, modularity, modifiability, extensibility, maintainability

and re-usability.

2. Ruby on Rails is web framework whereas PHP is only a scripting

language.

1 Ruby-http://www.ruby-lang.org/en/

2 TIOBE Index-http://www.tiobe.com/tpci.htm

3 Ruby on Rails-http://www.rubyonrails.org/

4 ComputerWorld-

http://computerworld.com/action/article.do?command=viewArticleBasic

&articleId=9011969

5 OReilly Radar-

http://radar.oreilly.com/archives/2006/08/programming_language_trends_1.html

VI Preface

3. Ruby on Rails includes a web server for development, whereas a web

server has to be installed for PHP.

4. Ruby on Rails implements the Model-View-Controller (MVC)

architecture, whereas the MVC architecture has to be implemented

externally in PHP.

5. Ruby on Rails framework provides the Create-Read-Update-Delete

(CRUD) functionality, PHP doesn’t.

While Java has advantages over Ruby on Rails in scalability, security,

transaction management and availability of development tools, Ruby on

Rails has advantages over Java in simplicity, development speed, and

maintainability. Ruby on Rails provides a tightly coupled web framework

consisting of a persistence framework, a web application framework, and

a Web Services framework. The J2EE application framework is not as

seamless as Ruby on Rails and requires much more configuration. Ruby on

Rails also has the advantage of being dynamically typed, while Java is

statically typed.

While a number of books have been published on Ruby on Rails, none

of the books compare Ruby on Rails with PHP and very few compare

Ruby on Rails with Java.

Who Should Read this Book?

A comparison with PHP and Java is included in most chapters where

relevant. But, you don’t have to be a PHP or Java developer to read the

book. You may be using another scripting language or Ruby on Rails may

be the first scripting language based web framework you are learning

about. If you have used Ajax you would be familiar with the requirement

for a server-side tier, which may be PHP-based, Java-based , or .NET-

based. Ruby on Rails supports Ajax and according to an Ajaxian.com

survey 6 14% of Ajax developers use Rails as the Ajax platform. If you

have been using PHP or Java class libraries to develop PDF and Excel

reports, Ruby on Rails provides Ruby gems for generating PDF and Excel

reports. If you are a web developer and often use PHP or Java to

create/read/update/delete database entries, Ruby on Rails provides a built-

in support for CRUD. If you have been using Java Naming and Directory

Interface (JNDI) or a PHP class library to implement directory services

6 Ajaxian.com Survey- http://ajaxian.com/archives/ajaxiancom-2006-survey-

results

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