如何在rails控制器中格式化json？答案

【问题标题】：How to format json in rails controller?如何在rails控制器中格式化json？
【发布时间】：2012-07-31 14:29:27
【问题描述】：

如何在 Rails 控制器中格式化 json？通过link_to我发送并进入方法params [：cat]，然后我通过父（params [：cat]）获取所有孩子，但是如何为我的jqTree以json格式格式化这一切？所以它看起来像 {label : (here go params[:cat]), children: [{all @search_trees.id}]} ？

require 'json'
        @search_trees = SearchTree.find(:all, :include => [:designation], :conditions => { :STR_ID_PARENT => params[:cat]})
        #data = "{ label : '10001',  children : [{label : '10111'},{label : '10122'}]  }"
        respond_to do |format|
          format.html # index.html.erb
          format.xml  { render :xml => @search_trees }
          format.json { render :json => data }
        end

我将从这里的长问题中提取部分问题：

How to correctly do jquery tree in rails app?

她是我的json：

[{"search_tree":{"STR_DES_ID":42275,"STR_ID":10130,"STR_ID_PARENT":10726,"STR_LEVEL":4,"STR_NODE_NR":130,"STR_SORT":621,"STR_TYPE": 1,"designation_id":42275}},{"search_tree":{"STR_DES_ID":42277,"STR_ID":10132,"STR_ID_PARENT":10726,"STR_LEVEL":4,"STR_NODE_NR":132,"STR_SORT": 620,"STR_TYPE":1,"designation_id":42277}},{"search_tree":{"STR_DES_ID":43152,"STR_ID":10730,"STR_ID_PARENT":10726,"STR_LEVEL":4,"STR_NODE_NR": 730,"STR_SORT":622,"STR_TYPE":1,"designation_id":43152}},{"search_tree":{"STR_DES_ID":42209,"STR_ID":12344,"STR_ID_PARENT":10726,"STR_LEVEL": 4,"STR_NODE_NR":2344,"STR_SORT":623,"STR_TYPE":1,"designation_id":42209}}] 我需要这样输出 jqTree - creating tree data from json

【问题讨论】：

标签： jquery ruby-on-rails ruby-on-rails-3 json

【解决方案1】：

如果你想自定义你的 json，你可以使用 RABL 或 JBuilder。您可以在此处找到截屏视频：http://railscasts.com/episodes/320-jbuilder?autoplay=true 和此处：http://railscasts.com/episodes/322-rabl?autoplay=true。

【讨论】：