Rails provides many features like

☛ Meta-programming: Rails uses code generation but for heavy lifting it relies on meta-programming. Ruby is considered as one of the best language for Meta-programming.

☛ Active Record: It saves object to the database through Active Record Framework. The Rails version of Active Record identifies the column in a schema and automatically binds them to your domain objects using metaprogramming

☛ Scaffolding: Rails have an ability to create scaffolding or temporary code automatically

☛ Convention over configuration: Unlike other development framework, Rails does not require much configuration, if you follow the naming convention carefully

☛ Three environments: Rails comes with three default environment testing, development, and production.

☛ Built-in-testing: It supports code called harness and fixtures that make test cases to write and execute.