XML element with optional attribute

[Russ P.]

Suppose I am printing out an XML element like this:

  def toXML: xml.Elem = {

    <waypt name={name}>

      ...

      </waypt>

    }

The "name" attribute is a String and is optional (some waypoints have names and some don't). I want to show it only if it is nonempty. In other words, I don't want to see name=""

I just want the name attribute completely omitted if the name is an empty String.

How can I do that in the toXML method above? Thanks.

[Naftoli Gugenheim]

I don't know if there's a better solution, but Elem is a case class so you can add the attribute on afterwards using the copy method.

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[Daniel Manchester]

Hi,

If you make "name" an Option[scala.xml.Text], I think the XML will be generated as you desire.

Dan

[Russ Paielli]

Nice. Thanks!

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