Robert's Profile

Anybody have got this working with rails 3.1? I'm curious because it isn't working in my 3.1 project, it was okay in 3.0.* . The problem is that when I want to type in something in this input area I've got "Searching..." message and no results listed at all, only when text doesn't match database entries I've got "no results" message. I've tried to add some pre data into the database manually, unfortunately in the result i have pre-populated input with "undefinded x" instead of name I wrote to join table. Maybe somebody had similar problem?