Rails 3 - returning JSON objects wrapped in a single object?

Question

I currently have a controller that returns JSON objects, that looks like this:

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

This works fine, and returns the following 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}
]

The problem is that the JQuery dropdown I am trying to load the JSON into seems to be expecting a JSON root node. As such, loading the JSON above directly does not work. But if it has a root node, as follows, it works fine:

{"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}
]}

So the question is a simple one - how can I get rails to include a root node?

I should point out that I have attempted to do this by setting ActiveRecord::Base.include_root_in_json = true in my config, but that only added root nodes to each individual object, not one overall root node as I require.

Thanks!

apneadiving · Accepted Answer · 2011-06-23 10:40:17Z

3

You could do the following

 respond_with { :results => @vehicleModels }

answered Jun 23, 2011 at 10:40

apneadiving

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1 Comment

baxang Over a year ago

Can we use to_json with options for a fine control of json output?

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