enumpath (rubygems): Enumpath is an implementation of the JSONPath spec for Ruby objects, plus some added sugar. It's like Ruby's native Enumerable#dig method, but fancier. It is designed for situations where you need to provide a dynamic way of describing a complex path through nested enumerable objects. This makes it exceptionally well suited for flexible ETL (Extract, Transform, Load) processes by allowing you to define paths through your data in a simple, easily readable, easily storable syntax. 
Keywords: jsonpath|ruby-gem