ryanb/cancan — Issue #517: Argument Error (1 for 0) in Controller or in view (depending on when the instance variable is accessed?)
Author: victorbstan
Created: 2011-11-20 23:25:29+00:00
State: open

I'm not sure if this is CanCan's fault or not, but I have a very detailed description of a problem I can't figure out on StackOverflow:

http://stackoverflow.com/questions/8204590/rails-3-form-for-argument-error-1-for-0-but-it-must-have-at-least-one-argume