validates :preferred_editor, :inclusion => Editors::ALL_EDITORS, :allow_nil => true
validates :auth_uid, :unless => proc { |u| u.auth_provider.nil? },
:uniqueness => { :scope => :auth_provider }
validates :preferred_editor, :inclusion => Editors::ALL_EDITORS, :allow_nil => true
validates :auth_uid, :unless => proc { |u| u.auth_provider.nil? },
:uniqueness => { :scope => :auth_provider }