Re: [xsl] XSLT - update attribute with new value

["M. David Peterson" <m.david@xxxxxxxxxx>]

Hi Ann Marie,

Ann Marie Rubin wrote:

> Many thanks to everyone who offered help with my stylesheet. Everyone's
> suggestions worked when using a hardcoded value for the attribute name. 
> But I need to use parameters.
>  
Just as is the case with adding dynamic data inline to any attribute you
simply use ="{dynamic logic or assignment of variable value}".

Without looking back at the previous threads to determine the best
approach to determine what the value of attribute name should be you
could do something like this:

<xsl:variable name="attName">
   <xsl:choose>
      <xsl:when test="test to determine value of this boolean">
         ROSE
      </xsl:when>
      <xsl:otherwise>
         NOT A ROSE
      </xsl:otherwise>
   </xsl:choose>
</xsl:variable>

...
<xsl:attribute name="{$attName}">
   <xsl:value-of select="$value"/>
</xsl:attribute>
...

HTH's!

<M:D/>

> this is what I've tried so far.  Is there another way?
>
> thanks,
>
>
> Ann Marie
>
> <xsl:param name="attr">ROSE</xsl:param>
> <xsl:param name="value">RED</xsl:param>
> <xsl:param name="node">orion-web-app</xsl:param>
>
> <xsl:template match="orion-web-app"> 
> <!-- adds attr to orion-web-app node correctly but won't
>    take vars for attr or match="$node" -->
>
>    <xsl:copy>
>         <xsl:if test="not(//@ROSE)">
>               <xsl:attribute name="ROSE"><xsl:value-of
> select="$value"/></xsl:attribute>
>               <xsl:apply-templates select="@*|node()"/>
>         </xsl:if>  
>    </xsl:copy> 
>
>     </xsl:template>
>
> If i include the attr test in this template:
>
> <xsl:template match="@*" priority="10">
> <!--   adds attr to each node in the tree
>         it should only be added to the specified node
>         and vars are not allowed where ROSE is used -->
>
>         <xsl:if test="not(//@ROSE)">
>           <xsl:attribute name="ROSE"><xsl:value-of
> select="$value"/></xsl:attribute>
>         </xsl:if>-->  
>
>
> to get around the restriction on where attribute names can be used, I
> tried this:
>
> <xsl:template match="@*" priority="10">
>       <!--replaces every attr in the result tree w/ RED
>        recoverable error: Cannot write an attribute node when no
>        element start tag is open-->
>     
>        <xsl:choose>
>        <xsl:when test="not(//@*=$attr)"><xsl:value-of
> select="$value"/></xsl:when>
>        <xsl:otherwise><xsl:value-of select="."/></xsl:otherwise>
>        </xsl:choose>