DataMapper plugin providing support for aggregates, functions on collections and datasets.

DataMapper plugin providing support for aggregates, functions on collections and datasets.

Plugin that adds foreign key constraints to associations. Currently supports only PostgreSQL and MySQL All constraints are added to the underlying database, but constraining is implemented in pure ruby.

A unified Ruby API for popular databases.

DataMapper plugin for modifying and maintaining database structure, triggers, stored procedures, and data

dm-serializer allows DataMapper models and collections to be serialized to a variety of formats (currently JSON, XML, YAML and CSV)

DataMapper plugin which adds “magic” to created_at, created_on, et cetera.

DataMapper plugin providing extra data types for use in data models

This is a DataMapper plugin that provides validations for DataMapper model classes.