neo4j gem) is a Ruby wrapper for the Neo4j graph database.
It is a “Drop in” replacement for Rails Active Record.
As of Summer 2015, the master branch reflects v5 of the gem. All new documentation is on our readthedocs site, though some old documentation has yet to be moved from this wiki (also there is the neo4j-core wiki).
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.