_type_cast

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 117
      def _type_cast(value)
        case value
        when Symbol, ActiveSupport::Multibyte::Chars, Type::Binary::Data
          value.to_s
        when true       then unquoted_true
        when false      then unquoted_false
        # BigDecimals need to be put in a non-normalized form and quoted.
        when BigDecimal then value.to_s('F')
        when Date, Time then quoted_date(value)
        when *types_which_need_no_typecasting
          value
        else raise TypeError
        end
      end