Re: [xsl] A newbie question in XSL - Using variables

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2005-01-25 18:28 -0800, prasannap@xxxxxx wrote:
> I have a simple question that Im trying to solve:

This is a FAQ

> <xsl-if test="some condition">
>            <font color="red"> Hello 1</font>
> </xsl-if>
> <xsl-if test="some other condition">
>            <font color="blue"> Hello 1</font>
> </xsl-if>
>
> Now, is there a way to obtain the above criteria something like,
>
> <xsl-if test="some condition">
>            $somevariable = "red";
> </xsl-if>
> <xsl-if test="some other condition">
>            $somevariable = "blue";
> </xsl-if>
> <font color=$somevariable> Hello 1</font>
>
> I understand that I cannot use <xml:param> and <xml:variable> as they are 
> constants. Please let me know a solution to this trivial problem.

Put the conditional around the value assigned, not around the assignment:

<xsl:variable name="use-color">
  <xsl:choose>
     <xsl:when test="some condition">red</xsl:when>
     <xsl:when test="other condition">blue</xsl:when>
     <xsl:otherwise>green</xsl:otherwise>
  </xsl:choose>
</xsl:variable>
...
<font color="$use-color">Hello</font>

Some caveats when testing result-tree-fragment variables, they always test 
true() until you cast them to the data type that you need.

I hope this helps.

......................... Ken

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