error_messages_for (ActionView::Helpers::ActiveRecordHelper)

    # File lib/action_view/helpers/active_record_helper.rb, line 152
          def error_messages_for(*params)
            options = params.extract_options!.symbolize_keys
            if object = options.delete(:object)
              objects = [object].flatten
            else
              objects = params.collect {|object_name| instance_variable_get("@#{object_name}") }.compact
            end
            count   = objects.inject(0) {|sum, object| sum + object.errors.count }
            unless count.zero?
              html = {}
              [:id, :class].each do |key|
                if options.include?(key)
                  value = options[key]
                  html[key] = value unless value.blank?
                else
                  html[key] = 'errorExplanation'
                end
              end
              options[:object_name] ||= params.first
              options[:header_message] = "#{pluralize(count, 'error')} prohibited this #{options[:object_name].to_s.gsub('_', ' ')} from being saved" unless options.include?(:header_message)
              options[:message] ||= 'There were problems with the following fields:' unless options.include?(:message)
              error_messages = objects.sum {|object| object.errors.full_messages.map {|msg| content_tag(:li, msg) } }.join

              contents = ''
              contents << content_tag(options[:header_tag] || :h2, options[:header_message]) unless options[:header_message].blank?
              contents << content_tag(:p, options[:message]) unless options[:message].blank?
              contents << content_tag(:ul, error_messages)

              content_tag(:div, contents, html)
            else
              ''
            end
          end