Ruby on Rail is a free web application framework, which intends to increase the speed and straightforwardness with which database-driven web sites can be created and offers skeleton code frameworks from the outset. Often shortened to Rails, or ROR, Ruby On Rails is an project written in the Ruby programming language and applications using the Rails framework are developed using the Rails framework are developed using the Model-View-Controller Design Pattern.
Rails is a full-stack framework for developing database-backed web applications according to the Model-View-Control pattern. From the Ajax in the view, to the request and response in the controller, to the domain model wrapping the database, Rails gives you a pure-Ruby development environment. To go live, all you need to add is a database and a web server.
The fundamental Ruby on Rails principles includes
The fundamental Ruby on Rails principles includes Convention over Configuration (CoC) and Don't repeat yourself (DRY).
"Don't repeat yourself" means that information is located in a single unambiguous place For example, using Active Record, the developer does not need to specify database column names in class definitions. Instead, Ruby can retrieve this information from the database.
"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.
Because of these strict defaults, Rails is often referred to as "opinionated software", which has been a point of contention for many critics of Rails.
