We at AnyChart JS Charts have just released a series of 20+ integration templates to help web developers add interactive charts, maps and dashboards to HTML5 apps quicker, with no regard to what technology stack is used.
In particular, now there are two templates for Ruby in the Technical Integrations collection, all distributed under the Apache 2.0 License and forkable on GitHub:
Check that out and ask your questions, if any. Thanks.