search for: associate_to_a_project

I have some difficulties with text_field_with_auto_complete. I’m new to this, it just will not work, I must be doing something wrong. It would be great if someone could advise me. I have tried to follow advice available on the internet, so I don’t know what the problem is. The script gets as far as the breakpoint in the controller, but it doesn’t like the next line – giving the error message