id_param now returns nil when the param is nil
Fixes nested ability conditions in issue #859
Merge branch 'master' of https://github.com/ryanb/cancan
Merge branch 'master' of https://github.com/ricec/cancan
treat ActiveRecord::Relation as Array
Fix typo
Merge remote-tracking branch 'francocatena/master' into less_queries

ty message aborts