validates :reportable_id, :uniqueness => { :scope => [:reportable_type] }
validates :reported_user_id, :presence => true
- validates :assigned_role, :presence => true, :inclusion => %w[administrator moderator]
+
+ ASSIGNED_ROLES = %w[administrator moderator].freeze
+ validates :assigned_role, :presence => true, :inclusion => ASSIGNED_ROLES
before_validation :set_default_assigned_role
before_validation :set_reported_user