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Neo4j.rb (neo4j gem) is a Ruby wrapper for the Neo4j graph database.
It is a “Drop in” replacement for Rails Active Record.

Content

As of Summer 2015, the master branch reflects v5 of the gem. See the first link below for information on its changes. Otherwise, the v3 documentation is accurate.

• neo4j 5.x – Released June 2015. Subtle changes to the public API, many performance improvements and feature additions.
• neo4j 4.x – Expected December 2014, already merged into master.
• neo4j 3.x – Released September 2014.
• neo4j 2.x – Legacy, supports Neo4j 1.9 embedded only, no updates since 2013.

Additional Documentation

This gem is tested thoroughly and the specs make great documentation. In particular, see this for general examples but everything in https://github.com/neo4jrb/neo4j/tree/master/spec/e2e should be helpful.