Rails project not detected

[svoop]

I'm not entirely sure whether this is a real bug. I'm trying the rsense plugin with a Rails app. Yet since rsense is invoked with a correct "--detect-project" argument, I'd expect it to find something when a model User with methods exists and I try to complete something like:

user = User.new
user.[Ctrl-/]

However, rsense simply goes "error: superclass not found: User". Any way to make this work or is this a rsense limitation?