class StreamEntry < ActiveRecord::Base belongs_to :account, inverse_of: :stream_entries belongs_to :activity, polymorphic: true validates :account, :activity, presence: true scope :with_includes, -> { includes(:activity) } def object_type orphaned? ? :activity : (targeted? ? :activity : self.activity.object_type) end def verb orphaned? ? :delete : self.activity.verb end def targeted? [:follow, :share, :favorite].include? verb end def target orphaned? ? nil : self.activity.target end def title orphaned? ? nil : self.activity.title end def content orphaned? ? nil : self.activity.content end def threaded? verb == :favorite || object_type == :comment end def thread orphaned? ? nil : self.activity.thread end def mentions orphaned? ? [] : self.activity.mentions end private def orphaned? self.activity.nil? end end