Re: [xsl] HOW TO CHECK FOR EXISTENCE OF A NODE

[Rick Taylor <taylor@xxxxxxxx>]

First, read some tutorials in depth.
Then try using an 'if' or a 'choose/when'

     <TABLE BORDER="4" WIDTH="100%" VALIGN="TOP" CELLPADDING="5">
      <!-- put the if at the appropriate level--I'm assuming this is where 
you might want it.-->
       <xsl:if test="header_notes">
       <TR>
         <TD WIDTH="100%" VALIGN="TOP" COLSPAN="2">
             <H4 ALIGN="LEFT">HEADER NOTES AREA</H4>
             <xsl:value-of select="header_notes_text" /><BR/>
         </TD>
       </TR>
     </xsl:if>
     </TABLE>

At 10:54 AM 3/14/03 -0600, you wrote:

> Newbie here.  I am looking for the proper element to evaluate the existence
> of a node in order to suppress the generation of an HTML display 'box' if a
> particular node does not exist.  So, instead of producing a box with a
> caption of 'HEADER NOTES' when there are no header notes, I would rather not
> produce the box at all to cut down on the clutter.  Here is the code which
> makes the box and displays any header_notes_text if it exists.   For
> example,
>
>
>      <TABLE BORDER="4" WIDTH="100%" VALIGN="TOP" CELLPADDING="5">
>        <TR>
>          <TD WIDTH="100%" VALIGN="TOP" COLSPAN="2">
>            <H4 ALIGN="LEFT">HEADER NOTES AREA</H4>
>               <xsl:for-each select="header_notes">
>               <xsl:value-of select="header_notes_text" /><BR/>
>               </xsl:for-each>
>          </TD>
>        </TR>
>      </TABLE>
>
>
>
> I tried wrapping the above with xsl:template but got this error:
> Keyword xsl:template may not be used here.
>
> I have not had any ah-ha experiences yet, so I don't see the obvious.
>
> ----------
>
> Mike Rudolph - EDI Coordinator
> Green Bay Packaging Inc.
> Phone: 920.433.5426
> Fax:   920.438.5426
> Email: mrudolph@xxxxxxx
>
>
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

Rick Taylor
XML Developer
PPDM Association


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