Rails 4 list mounted engines

Question

In Rails 3, I was able to do distinguish mounted (or mountable) engines from "other" engines by calling MyEngine::Engine.class.mounted_path. This does not work in Rails 4 anymore. Based on this question, railties seem to have been deprecated.

How can I distinguish between mountable engines in Rails 4?

Answer 1

Rails::Engine.subclasses

This will return the mounted engines.