belongs_to :author, :class_name => "User", :foreign_key => :author_id
validates_inclusion_of :event, :in => [ "opened", "closed", "reopened", "commented", "hidden" ]
belongs_to :author, :class_name => "User", :foreign_key => :author_id
validates_inclusion_of :event, :in => [ "opened", "closed", "reopened", "commented", "hidden" ]