Model.class.to_s don't return Model name

[luizcarvalho]

in file https://github.com/CanCanCommunity/cancancan/blob/develop/lib/cancan/rule.rb#L94 is do follow comparison

subject.class.to_s == sub.to_s

but ´subject.class.to_s´ aways return "Class" instead of "ModelName" . This is correct?

[bryanrite]

When checking permissions on instances of class (i.e. on the show action), the instance is passed in here and instance.class.to_s will be "ModelName".