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Ruby Object Mapper (rom-rb) is a data mapping and persistence toolkit for Ruby with the goal to provide powerful object mapping capabilities without limiting the full power of your database.

Main rom gem provides following components:

  • core - Core and Adapter APIs
  • changeset - Changeset objects integrated with rom-core
  • repository - Additional repository abstraction integrated with rom-core

Learn more:


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There are other gems within the rom ecosystem that you will find useful:


Framework integrations



This project has a long history and wouldn't exist without following people:


See LICENSE file.