Question

我正在使用以下代码呈现序列化的JSON响应：

respond_with(@posts, :only => [:id, :content, :created_at], 
        :include => { :user => { :only => [:id, :name] }, 
                      :comments => { :only => [:content, :created_at] }})

响应是在JAVA代码中解析的，所以我想将created_at值转换为我可以使用的格式，如何在每个created_at值上运行一个方法（例如甚至.to_i）？

Answer 1

我会在评论模型中定义一个新方法，例如。

class Comment < ActiveRecode::Base
  ...
  def created_at_to_i
     created_at.to_i
  end 
  ...
end

和渲染时

respond_with(@posts, :only => [:id, :content, :created_at], 
        :include => { :user => { :only => [:id, :name] }, 
                      :comments => { :only => [:content, :created_at_to_i] }})

Answer 2

在每个模型中定义方法，如：

def formated_created_at
  self.created_at.strftime(FORMAT_AS_YOU_LIKE)
end

在渲染时使用它像：

respond_with（@ postts，：only =＆gt; [：id，：content，：formated_created_at ，：include =＆gt; {：user =＆gt; {：only =＆gt; [：id，：name]}，：comments =＆gt; {：only =＆gt; [：content，：formated_created_at ]}}}）

已编辑：

您可以创建自己的哈希并将其传递给respond_with，而不是仅使用：在respond_with中。喜欢：

post_hash= { :post => [{:id => 1, :content => "abc", :created_at => self.formated_created_at,:user => {:id => 1, :name => 'Vik' }, :comments => { :content => "comment text", :created_at => self.comment.formated_created_at}] }
respond_with(post_hash)

我认为你可以通过javascript，jQuery在显示时格式化created_at。

response_with中属性的内部方法

2 个答案: