Re: [xsl] Append Attribute

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

At 2004-11-13 07:18 -0800, Karl J. Stubsjoen wrote:
> Using xsl:attribute (or similar), is there a way to append an attribute to
> an existing attribute set?

No.  Every time you define an attribute value it will replace any pending 
attribute value for the currently open set of specified attributes.  I'm 
assuming when you say "attribute set" you are speaking of the open set of 
specified attributes and not the XSLT "attribute-set" construct.

> Example:
>   <div class="my_div">
>       <xsl:attribute name="class">big_font</xsl:attribute>
>   </div>
>
> Desired Output:
>   <div class="my_div big_font">
>   </div>

Assuming that your <xsl:attribute/> is embedded in some testing logic 
(otherwise you would have explicitly added it), my recommendation would be 
to use the attribute instruction for all of the properties with the logic 
as follows (note the spacing inside the <xsl:text>):

  <div>
    <xsl:attribute name="class">
      <xsl:text>my_div</xsl:text>
      <xsl:if test="$mytest">
        <xsl:text> big_font</xsl:text>
      </xsl:if>
      <xsl:if test="$myothertest">
        <xsl:text> other_property</xsl:text>
      </xsl:if>
    </xsl:attribute>
    ...
   </div>

Since all attributes need to be added before any content, the above should 
not be disruptive to the flow of logic you would need if such a thing as an 
append existed ... which it does not.

I hope this helps.

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

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