Hobo is an open source web application framework

Web application framework

A web application framework is a software framework that is designed to support the development of dynamic websites, web applications and web services. The framework aims to alleviate the overhead associated with common activities performed in Web development...

 that builds on Ruby on Rails

Ruby on Rails

Ruby on Rails, often shortened to Rails or RoR, is an open source web application framework for the Ruby programming language.-History:...

. It provides functionality that is commonly used on many websites (including user authentication and permissions, object lifecycles and ajax widgets) and tools that make existing Ruby on Rails

Ruby on Rails

Ruby on Rails, often shortened to Rails or RoR, is an open source web application framework for the Ruby programming language.-History:...

 features faster to develop and easier to use (including a powerful template engine, user-definable rich field types and automatic generation of database migrations, routing and controller actions) to make Ruby on Rails

Ruby on Rails

Ruby on Rails, often shortened to Rails or RoR, is an open source web application framework for the Ruby programming language.-History:...

 development even faster and more enjoyable for the developer.

DRYML

DRYML is the XML-based

XML

Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

 programming language used by the template engine in Hobo (the name is derived from the concept of Don't repeat yourself

Don't repeat yourself

In software engineering, Don't Repeat Yourself is a principle of software development aimed at reducing repetition of information of all kinds, especially useful in multi-tier architectures...

). It allows customization of existing tags for widgets

Web widget

In computing a web widget is a software widget for the web. It's a small application that can be installed and executed within a web page by an end user. They are derived from the idea of code reuse. Other terms used to describe web widgets include: portlet, gadget, badge, module, webjit, capsule,...

 through polymorphism

Polymorphism in object-oriented programming

Subtype polymorphism, almost universally called just polymorphism in the context of object-oriented programming, is the ability to create a variable, a function, or an object that has more than one form. The word derives from the Greek "πολυμορφισμός" meaning "having multiple forms"...

 and inheritance

Inheritance (object-oriented programming)

In object-oriented programming , inheritance is a way to reuse code of existing objects, establish a subtype from an existing object, or both, depending upon programming language support...

, as well as parameters, so that the programmer can get as much code re-use as possible.

The default DRYML tag library used in Hobo is called Rapid (DRYML is the language and Rapid is a tag library written in DRYML), but it is possible also to write custom tag libraries in DRYML, and use DRYML in non-Hobo projects.

See also

• Ruby on Rails
  Ruby on Rails
  Ruby on Rails, often shortened to Rails or RoR, is an open source web application framework for the Ruby programming language.-History:...
  
  
• Agile web development
• Don't repeat yourself
  Don't repeat yourself
  In software engineering, Don't Repeat Yourself is a principle of software development aimed at reducing repetition of information of all kinds, especially useful in multi-tier architectures...
  
  
• Convention over configuration
  Convention over Configuration
  Convention over configuration is a software design paradigm which seeks to decrease the number of decisions that developers need to make, gaining simplicity, but not necessarily losing flexibility....
  
  

e-books

• Rapid Rails with Hobo
• Hobo at Work

External links

• Hobo website
• The Hobo GitHub repository
• The Hobo Users Group (on Google Groups)
• Hobo Cookbook (user manuals, tutorials and API reference)