Rails Active Model Serializer - has_many and accessing the parent record

Question

I\'m trying to build a JSON representation of some Rails models using Active Model Serializer, where some models embed others. For example, I have Event and Attendees, Event has

Answer 1

I'd do things manually to get control:

class EventSerializer < ActiveModel::Serializer
  attributes :name, :attendees

  def attendees
    object.attendees.map do |attendee|
      AttendeeSerializer.new(attendee, scope: scope, root: false, event: object)
    end
  end
end

class AttendeeSerializer < ActiveModel::Serializer
  attributes :name, :comments

  def comments
    object.comments.where(event_id: @options[:event].id).map do |comment|
      CommentSerializer.new(comment, scope: scope, root: false)
    end
  end
end