boundable?

# File activerecord/lib/active_record/relation/query_attribute.rb, line 27
      def boundable?
        return @_boundable if defined?(@_boundable)
        value_for_database unless value_before_type_cast.is_a?(StatementCache::Substitute)
        @_boundable = true
      rescue ::RangeError
        @_boundable = false
      end