error_messages_for错误信息排序详解编程语言

#error_messages_for方法修改 
  def error_messages_for(*params) 
    options = params.last.is_a?(Hash) ? params.pop.symbolize_keys : {} 
    objects = params.collect {|object_name| instance_variable_get("@#{object_name}") }.compact 
    error_messages = objects.map do |object|  
      sort_show_error_msg(object) 
    end 
    count  = objects.inject(0) {|sum, object| sum + error_messages[0].size} 
    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 
      error_message = "個の入力の不備が" 
      header_message = "#{count} #{error_message} あります。" 
      # Change 'error' to 'errors' for english setups void of a localization plugin 
      header_message.gsub!("error", "errors") if header_message.include?(error_message) and count > 1 
      content_tag(:div, 
                  content_tag(options[:header_tag] || :h2, header_message) << 
      content_tag(:p, 'There were problems with the following fields:') << 
      content_tag(:ul, error_messages), 
      html 
      ) 
    else 
        '' 
    end 
  end 
 
  def sort_show_error_msg(obj) 
#    config = active_scaffold_config 
    msg_arr = obj.errors.sort  
    #去除隐藏字段 
    hidden_attr = obj.class::HIDDEN_ATTRIBUTES rescue [] 
    msg_arr.delete_if{|key,val|hidden_attr.include?(key)} unless hidden_attr.blank? 
    #排序 
    hash_field_orders = obj.class::HUMANIZED_ATTRIBUTES_ORDERS rescue [] 
    unless hash_field_orders.blank? 
      msg_arr = msg_arr.sort do |key_a,key_b| 
        hash_field_orders[key_a[0].to_sym] 
        hash_field_orders[key_a[0].to_sym] <=> hash_field_orders[key_b[0].to_sym] 
      end 
    end 
    full_messages = [] 
      msg_arr.each do|attr,msg| 
         next if msg.nil? 
         if attr == "base" 
           full_messages << msg 
         else 
           label = obj.class.human_attribute_name(attr) 
           full_messages << content_tag(:li,"#{label + " " + msg}") 
         end 
      end 
    return full_messages 
  end

HUMANIZED_ATTRIBUTES_ORDERS =  
  { 
    :login=> 1, 
    :name => 2, 
    :email => 3, 
    :password => 4, 
    :password_confirmation => 5 
  }

<%= error_messages_for :user %>