Re: [xsl] Looking for a concise way of specifying an conditional attribute in output

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

At 2011-05-04 13:03 -0500, John McGowan wrote:
> I'm looking for a more concise way of doing this particular pattern
> that shows up a lot in (x)html forms.
>
> ..
> <option value="{@value}>
>  <xsl:if test="@value eq something"><xsl:attribute name="selected"
> select="'selected'" /></xsl:if>
>  other stuff
> </option>
> ..
>
> I tried this out, thinking that it might work...
>
> <option value="{@value}>
>  <xsl:value-of select="isSelected(@value,something)">
>  other stuff
> </option>
>
> with a reusable function like this
>
> <xsl:function name="isSelected">
>  <xsl:param name="v1"/>
>  <xsl:param name="v2"/>
>  <xsl:if test="$v1 eq $v2"><xsl:attribute name="selected"
> select="'selected'" /></xsl:if>
> </xsl:function>
>
> But instead I ended up with the word selected showing up inside of the
> option element, not as an attribute.

Because you are using <xsl:value-of/> you are getting the text.

> I've been doing it the first way for years, and was just hoping I
> could make it a little cleaner, but you must not be able to return
> just an attribute from a function and have it make it's way into the
> element containing the function call.

Use <xsl:copy-of/> and you should be fine.  That copies the attribute 
node, not the attribute value, to the option element.

I hope this helps.

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

--
Contact us for world-wide XML consulting & instructor-led training
Crane Softwrights Ltd.          http://www.CraneSoftwrights.com/s/
G. Ken Holman                 mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
Legal business disclaimers:  http://www.CraneSoftwrights.com/legal