activerecord/lib/active_record/connection_adapters/type/decimal.rb


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module ActiveRecord
  module ConnectionAdapters
    module Type
      class Decimal < Value # :nodoc:
        def type
          :decimal
        end

        private

        def cast_value(value)
          if value.respond_to?(:to_d)
            value.to_d
          else
            value.to_s.to_d
          end
        end
      end
    end
  end
end