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Rails 5.0.0.1 was released on August 10, 2016, with Exclusive use of rails CLI over Rake and support for Ruby version 2.2.2 and above. Rails 5.0 was released on June 30, 2016, introducing Action Cable, API mode, and Turbolinks 5. Rails 4.2 was released on December 19, 2014, introducing Active Job, asynchronous emails, Adequate Record, Web Console, and foreign keys. Rails 4.1 was released on April 8, 2014, introducing Spring, Variants, Enums, Mailer previews, and secrets.yml. Rails 4.0 was released on June 25, 2013, introducing Russian Doll Caching, Turbolinks, Live Streaming as well as making Active Resource, Active Record Observer and other components optional by splitting them as gems. Rails 3.2.x is the last version that supports Ruby 1.8.7. Rails 3.2 was released on Januwith a faster development mode and routing engine (also known as Journey engine), Automatic Query Explain and Tagged Logging. Rails 3.1 was released on August 31, 2011, featuring Reversible Database Migrations, Asset Pipeline, Streaming, jQuery as default JavaScript library and newly introduced CoffeeScript and Sass into the stack. Merb was merged with Rails as part of the Rails 3.0 release. On December 23, 2008, Merb, another web application framework, was launched, and Ruby on Rails announced it would work with the Merb project to bring 'the best ideas of Merb' into Rails 3, ending the 'unnecessary duplication' across both communities.

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The Rack web server interface and Metal allow one to write optimized pieces of code that route around Action Controller. Engines give developers the ability to reuse application pieces complete with routes, view paths and models. Templates enable the developer to generate a skeleton application with custom gems and configurations. Rails version 2.3 was released on March 15, 2009, with major new developments in templates, engines, Rack and nested model forms.

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In August 2006, the framework reached a milestone when Apple announced that it would ship Ruby on Rails with Mac OS X v10.5 'Leopard', which was released in October 2007. Hansson first released Rails as open source in July 2004, but did not share commit rights to the project until February 2005. Well-known sites that use Ruby on Rails include Airbnb, Bloomberg, Crunchbase, Dribbble, GitHub and Shopify.ĭavid Heinemeier Hansson extracted Ruby on Rails from his work on the project management tool Basecamp at the web application company 37signals.

Ruby on Rails' influence on other web frameworks remains apparent today, with many frameworks in other languages borrowing its ideas, including Django in Python Catalyst in Perl Laravel, CakePHP and Yii in PHP Grails in Groovy Phoenix in Elixir Play in Scala and Sails.js in Node.js. Ruby on Rails' emergence in 2005 greatly influenced web app development, through innovative features such as seamless database table creations, migrations, and scaffolding of views to enable rapid application development. In addition to MVC, Rails emphasizes the use of other well-known software engineering patterns and paradigms, including convention over configuration (CoC), don't repeat yourself (DRY), and the active record pattern. It encourages and facilitates the use of web standards such as JSON or XML for data transfer and HTML, CSS and JavaScript for user interfacing. Rails is a model–view–controller (MVC) framework, providing default structures for a database, a web service, and web pages. Ruby on Rails, or Rails, is a server-side web application framework written in Ruby under the MIT License.

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