_assign_attribute

# File activerecord/lib/active_record/attribute_assignment.rb, line 41
    def _assign_attribute(k, v)
      public_send("#{k}=", v)
    rescue NoMethodError
      if respond_to?("#{k}=")
        raise
      else
        raise UnknownAttributeError, "unknown attribute: #{k}"
      end
    end