Question

我目前有一个返回JSON对象的控制器，如下所示：

def getModels
  @vehicleModels = @vehicleModels.where(:vehicleMake_id => params[:vehicleMake])
  respond_with(@vehicleModels)
end

这很好用，并返回以下JSON：

[
{"created_at":"2011-06-22T15:49:06Z","id":1,"name":"A4","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":2,"name":"A5","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":3,"name":"A6","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":4,"name":"A8","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":5,"name":"TT","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":10,"name":"Touareg","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1}
]

问题是我试图加载JSON的JQuery下拉列表似乎期待一个JSON根节点。因此，直接加载上面的JSON不起作用。但如果它有一个根节点，如下所示，它可以正常工作：

{"results":[
{"created_at":"2011-06-22T15:49:06Z","id":1,"name":"A4","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":2,"name":"A5","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":3,"name":"A6","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":4,"name":"A8","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":5,"name":"TT","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1},
{"created_at":"2011-06-22T15:49:06Z","id":10,"name":"Touareg","updated_at":"2011-06-22T15:49:06Z","vehicleMake_id":1}
]}

所以问题很简单 - 如何让rails包含根节点？

我应该指出，我试图通过在我的配置中设置ActiveRecord::Base.include_root_in_json = true来尝试这样做，但是只根据我的需要将根节点添加到每个单独的对象，而不是一个整体根节点。

谢谢！

Answer 1

您可以执行以下操作

 respond_with { :results => @vehicleModels }

Rails 3 - 返回包装在单个对象中的JSON对象？

1 个答案: