Contents

# frozen_string_literal: true

require "bigdecimal/util"

module ActiveModel
  module Type
    class Decimal < Value # :nodoc:
      include Helpers::Numeric
      BIGDECIMAL_PRECISION = 18

      def type
        :decimal
      end

      def type_cast_for_schema(value)
        value.to_s.inspect
      end

      private

      def cast_value(value)
        casted_value = \
          case value
          when ::Float
            convert_float_to_big_decimal(value)
          when ::Numeric
            BigDecimal(value, precision || BIGDECIMAL_PRECISION)
          when ::String
            begin
              value.to_d
            rescue ArgumentError
              BigDecimal(0)
            end
          else
            if value.respond_to?(:to_d)
              value.to_d
            else
              cast_value(value.to_s)
            end
          end

        apply_scale(casted_value)
      end

      def convert_float_to_big_decimal(value)
        if precision
          BigDecimal(apply_scale(value), float_precision)
        else
          value.to_d
        end
      end

      def float_precision
        if precision.to_i > ::Float::DIG + 1
          ::Float::DIG + 1
        else
          precision.to_i
        end
      end

      def apply_scale(value)
        if scale
          value.round(scale)
        else
          value
        end
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
options_model-0.0.10	lib/active_model/type/decimal.rb
options_model-0.0.9	lib/active_model/type/decimal.rb
options_model-0.0.8	lib/active_model/type/decimal.rb
options_model-0.0.7	lib/active_model/type/decimal.rb