Removing child root nodes in RABL

Question

I'm trying to render a pretty simple data structure using RABL, but I can't figure out how to remove the child root nodes properly. Here are my two templates.

First, the collection index template.

collection @groups, :object_root => false

attributes :id, :name
child :files do
  extends 'groups/_file'
end

And next, the file partial template.

object @file

attributes :id

Those two templates end up producing the following JSON:

[
   {
      "id":"4f57bf67f85544e620000001",
      "name":"Some Group",
      "files":[
         {
            "file":{
               "id":"4f5aa3fef855441009000007"
            }
         }
      ]
   }
]

I want to find a way to remove the root "file" key inside of the files collection. Something like:

[
   {
      "id":"4f57bf67f85544e620000001",
      "name":"Some Group",
      "files":[
         {
            "id":"4f5aa3fef855441009000007"
         }
      ]
   }
]

mateusmaso · Accepted Answer · 2017-02-18T00:50:47.213

48

On latest versions of Rabl, you have to set this configuration if you want include_root_json to be false in all levels.

Rabl.configure do |config|
  config.include_json_root = false
  config.include_child_root = false
end

edited Feb 18 '17 at 00:50

answered Jul 06 '12 at 19:08

mateusmaso

7,843
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ive been having this same problem also, and i have tried this solution per the wiki and restarted my server a handful of times, all to no avail. – ohayon Jan 27 '13 at 18:04

score 12 · Answer 2 · answered Mar 14 '12 at 08:12

12

Try replacing:

    child :files do
      extends 'groups/_file'
    end

with:

    node :files do |group|
      group.files.map do |file|
        partial 'groups/_file', object: file, root: false
      end
    end

answered Mar 14 '12 at 08:12

kawty

1,656
15
22

the one above is more perfect :P – Dzung Nguyen Mar 01 '13 at 15:18

score 2 · Answer 3 · answered Mar 13 '12 at 01:43

2

This is the usual way of removing the root json (rather than specifying object_root: false)

config/initializers/rabl_config.rb

Rabl.configure do |config|
  config.include_json_root = false
end

Does moving that to there (and restarting rails), fix it?

answered Mar 13 '12 at 01:43

Jesse Wolgamott

40,197
4
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109

3

Well, I'm not really trying to adjust it globally. I want to default to including the root nodes. – BBonifield Mar 13 '12 at 04:18
1

Love this. I would rather tell it to /include/ the object root rather than excluding it. – RyanScottLewis Apr 15 '12 at 06:06
@c00lryguy if you do `include_json_root = false`, how do you tell it to include the root on a case-by-case basis? – Aaron Gibralter Jun 15 '12 at 06:06
I settled with JSONBuilder so I have no idea, have you tried the selected answer, but flipping the value of `root` given to the partial? – RyanScottLewis Jun 17 '12 at 10:54

score 0 · Answer 4 · answered Jun 22 '14 at 16:44

0

just putting it out there, in case you want to apply it for a specific child:

child :files, :object_root => false do
  extends 'groups/_file'
end

answered Jun 22 '14 at 16:44

Nuriel

3,731
3
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23

Removing child root nodes in RABL

4 Answers4

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