index method in controller not working for active model serializer

Question

I want to send a json response containing a collection of my bookmarks resource. For some reason active model serializer is just not manipulating my json as expected. It's only rendering the default response.

Here is my BookmarksSerializer serializer in app/serializers/bookmarks_serializer.rb

class BookmarksSerializer < ActiveModel::Serializer
  attributes :id, :url, :title
end

and my controller method inside my Api::UsersController which has a respond_to :json filter on top

def index
  user = User.find_by(username: params[:username])
  @bookmarks = user.bookmarks
  render json: @bookmarks.to_json
end

Instead of getting only :id, :title and :url, I am getting the full default hash

What am I doing wrong? I am using rails 4.1.5 and the github version of the active_model_serializers gem.

gem 'active_model_serializers', github: 'rails-api/active_model_serializers'

FYI: I have a show method inside the same controller and it's serializer picks up the single resource just fine. It's just the collection in the index method that is not rendering. Please help

Answer 1

Try this

render :json => @bookmarks, each_serializer: BookmarksSerializer

Answer 2

You are using the master branch of active model serializers. The array serializer was added 4 days ago and is not accepting any arguments which is probably erroneous. Your code should work well against 0-9-stable . Try:

gem 'active_model_serializers', github: 'rails-api/active_model_serializers', branch: '0-9-stable'