    # File lib/action_view/helpers/active_record_helper.rb, line 103
          def error_messages_for(object_name, options = {})
            options = options.symbolize_keys
            object = instance_variable_get("@#{object_name}")
            if object && !object.errors.empty?
              content_tag("div",
                content_tag(
                  options[:header_tag] || "h2",
                  "#{pluralize(object.errors.count, "error")} prohibited this #{object_name.to_s.gsub("_", " ")} from being saved"
                ) +
                content_tag("p", "There were problems with the following fields:") +
                content_tag("ul", object.errors.full_messages.collect { |msg| content_tag("li", msg) }),
                "id" => options[:id] || "errorExplanation", "class" => options[:class] || "errorExplanation"
              )
            else
              ""
            end
          end