# File lib/cancan/ability.rb, line 213 def unauthorized_message(action, subject) keys = unauthorized_message_keys(action, subject) variables = {:action => action.to_s} variables[:subject] = (subject.class == Class ? subject : subject.class).to_s.underscore.humanize.downcase message = I18n.translate(nil, variables.merge(:scope => :unauthorized, :default => keys + [""])) message.blank? ? nil : message end