Описание тега rails-activerecord

A popular ORM in the Ruby on Rails framework, based on the Active Record pattern.

Features that are provided by this ORM:

• automated mapping between classes and tables, attributes and columns
• associations between objects defined by simple class methods.
• aggregations of value objects
• validation rules that can differ for new or existing objects
• callbacks available for the entire life cycle (instantiation, saving, destroying, validating, etc.)
• inheritance hierarchies
• transactions
• reflections on columns, associations, and aggregations
• database abstraction through simple adapters
• logging support for Log4r and Logger
• database agnostic schema management with Migrations
• scopes for chaining commonly used database queries

Further reading:

• API documentation
• GitHub page
• Ruby on Rails
• Active Record Basics - Rails Guides
• Active Record Query Interface