module Arel module Attributes class Attribute < Struct.new :relation, :name include Arel::Expressions include Arel::Predications include Arel::AliasPredication include Arel::OrderPredications include Arel::Math ### # Create a node for lowering this attribute def lower relation.lower self end def type_cast_for_database(value) relation.type_cast_for_database(name, value) end def able_to_type_cast? relation.able_to_type_cast? end end class String < Attribute; end class Time < Attribute; end class Boolean < Attribute; end class Decimal < Attribute; end class Float < Attribute; end class Integer < Attribute; end class Undefined < Attribute; end end Attribute = Attributes::Attribute end