Rails Url

Large Ruby on Rails Web Site

“Ruby on Rails is a breakthrough in lowering the barriers of entry to programming.
Powerful web applications that formerly might have taken weeks or months
to develop can be produced in a matter of days.”
Tim O'Reilly, Founder of O'Reilly Media

What is Ruby?

Ruby is a pure object-oriented programming language with a super-clean syntax that makes programming elegant and fun. Ruby successfully combines Smalltalk's conceptual elegance, Python's ease of use and learning, and Perl's pragmatism. Ruby originated in Japan in the early 1990s. It has become popular worldwide in the past few years as more English-language books and documentation have become available (and its popularity has really taken off since the introduction of Rails!).

What is Rails?

Rails is an open source Ruby framework for developing web-based, database-driven applications. What's special about that? There are dozens of frameworks out there, and most of them have been around much longer than Rails. Why should you care about yet another framework?

What would you think if I told you that you can develop a web application at least ten times faster with Rails than you can with a typical Java framework? You can--without making any sacrifices in the quality of your application! How is this possible?

Part of the answer lies in the Ruby programming language. Rails takes full advantage of Ruby. The rest of the answer is in two of Rails' guiding principles: less software and convention over configuration.

Less software means you write fewer lines of code to implement your application. Keeping your code small means faster development and fewer bugs, which makes your code easier to understand, maintain, and enhance. Very shortly, you will see how Rails cuts your code burden.

Convention over configuration means an end to verbose XML configuration files--there aren't any in Rails! Instead of configuration files, a Rails application uses a few simple programming conventions that allow it to figure out everything through reflection and discovery. Your application code and your running database already contain everything that Rails needs to know!

History

Ruby on Rails was extracted by David Heinemeier Hansson from his work on Basecamp, a project management tool by the web design (now web application) company 37signals.[1] It was first released to the public in July 2004. In August 2006 Apple announced that it would ship Ruby on Rails with Mac OS X v10.5 Leopard,[2] which was released in October 2007.

Philosophy

The fundamental Ruby on Rails principles include Convention over Configuration (CoC) and Don't repeat yourself (DRY).

"Convention over Configuration" means a developer only needs to specify unconventional aspects of the application. For example, if there's a class Sale in the model, the corresponding table in the database is called sales by default. It is only if one deviates from this convention, such as calling the table "products_sold", that one needs to write code regarding these names.

"Don't repeat yourself" means that information is located in a single, unambiguous place. For example, using ActiveRecord, the developer does not need to specify database column names in class definitions. Instead, Ruby can retrieve this information from the database.

www.railsurl.com
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