Rails3：在多模式表單中顯示驗證錯誤？

Question

是否可以創建這種類型的顯示錯誤像一個簡單的模型？ http://i.imgur.com/8t6ef.png

我得到創建兩個模型...但如果我填寫不正確的形式..錯誤消息不會出現和錯誤Rails屏幕說我，例如，「驗證失敗：field1不能爲空......」

http://i.imgur.com/6KvVh.png

型號：

class Step < ActiveRecord::Base 

    #validates 
    validates :tree_id, :presence => true, :numericality => true 
    validates :is_first, :presence => true, :length => {:maximum => 1} 
    validates :status, :presence => true, :numericality => true 
    validates :step_type_id, :presence => true 

    #relations 
    belongs_to :step_type 
    belongs_to :tree 
    has_many :statements 

    accepts_nested_attributes_for :statements 

end 

class Statement < ActiveRecord::Base 

    #validates 
    validates :step_id, :presence => true, :numericality => true 
    validates :title, :presence => true, :length => {:maximum => 255} 
    validates :statement, :presence => true 
    validates :help, :presence => true 
    validates :is_last_version, :presence => true, :length => {:maximum => 1} 


    #relations 
    belongs_to :step 
    has_many :transitions 

end 

任何例子或者建議？

Answer 1

您在視圖中是否有以下幾行？

<% if @statement.errors.any? %> 
    <% flash[:notice] = "Please correct!" %> 

    <% for message in @statement.errors.full_messages %> 
     <li class="cf-messages-li"><%= message %></li> 
    <% end %> 

<% end %>