Rails 4.2 Active Record Serializer JSON format issue

Question

I have a serializer on rails that has another nested serializer inside like this

class FeedSerializer < ActiveModel::Serializer
  attributes :id

  has_one :user

  def user
    if object.anonymous
        nil
    else
        UserFeedSerializer.new(object.user)
    end
  end
end

I expected the JSON response to be like

{
    "feed": {
        "id": 10
        "user": {
            "id": 10
        }
    }
}

But instead it's doing this:

{
    "feed": {
        "id": 10
        "user": {
            "user_feed": {
                "id": 10
            }
        }
    }
}

Why is it including an extra nest?

score 1 · Accepted Answer · answered Feb 26 '15 at 21:41

1

Because you are passing serializer for user relation, not the User instance itself. Try disabling root attribute wrapping by placeing root false at the top of UserFeedSerializer.

answered Feb 26 '15 at 21:41

Ahmed Al Hafoudh

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awesome thanks that was it! Do you know if you can turn this on/off if I wanted to use `UserFeedSerializer` as a root for a different feed instead of just adding `self.root = false` in the class file? – Math is Hard Feb 26 '15 at 21:54
Subclass it specially for this case. :) – Ahmed Al Hafoudh Feb 26 '15 at 22:53

Rails 4.2 Active Record Serializer JSON format issue

1 Answers1