The Merb Way

Chapter 5. Models

Models are related data and algorithms that respectively represent the properties and behaviors of domain objects used within an application. Models are used in nearly every decently complex object-oriented application because they organize application data in object form. Within the scope of a typical Merb application, examples of modeled objects may include users, posts, entries, or comments. These objects are most often persisted in a database through the use of an Object Relational Mapper, or ORM. As agnosticism has been central to Merb’s design, application developers are free to integrate whatever Ruby ORM they may need. Nonetheless, the default ORM included as part of the standard Merb stack is DataMapper, an ActiveRecord-like ...