instance method scope_option_by_partial

# File actionview/lib/action_view/helpers/translation_helper.rb, line 153
        def scope_option_by_partial(scope)
          if (scope.is_a?(String) || scope.is_a?(Symbol)) && scope.start_with?(".")
            if @virtual_path
              resolved = "#{scope_prefix}#{scope}"
              scope.is_a?(Symbol) ? resolved.to_sym : resolved
            else
              raise "Cannot use scope: #{scope.inspect} shortcut because path is not available"
            end
          else
            scope
          end
        end