module Api module V2 class EventSerializer < ApplicationSerializer attributes :id, :sequence_id, :kind, :map_id, :created_at has_one :actor, serializer: UserSerializer, root: 'users' has_one :map, serializer: MapSerializer def actor object.user || object.eventable.try(:user) end def map object.eventable.try(:map) || object.eventable.map end end end end