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Re: Need to get previous node

From: Martin Honnen <mahotrash@-----.-->
To: NULL
Date: 8/5/2009 7:30:00 PM
tshad wrote:
> That did it, but now I need to use that number to get a field from a 
> previous set of nodes, but the select is not working.
> 
> If I make the following changes the XML looks like:
> 
>     <FORM>
>         <FIELDS>
>             <TITLE1>This is Title1</TITLE1>
>             <TITLE2>This is Title2</TITLE2>
>             <TITLE3>This is Title3</TITLE3>
>         </FIELDS>
>         <FORMPHOTOS>
>             <PHOTO NUM="1">
>                 <FILENAME>09May001.jpg</FILENAME>
>                 <FILETYPE>JPEG</FILETYPE>
>             </PHOTO>
>             <PHOTO NUM="2">
>                 <FILENAME>09005.jpg</FILENAME>
>                 <FILETYPE>JPEG</FILETYPE>
>             </PHOTO>
>             <PHOTO NUM="3">
>                 <FILENAME>09002.jpg</FILENAME>
>                 <FILETYPE>JPEG</FILETYPE>
>             </PHOTO>
>         </FORMPHOTOS>
>     </FORM>
> 
> I am doing:
> 
>  <xsl:template match="FORMPHOTOS/PHOTO">
>   <xsl:choose>
>    <xsl:when test=". != ''">
>     <attachment>
>      <source>
>       <xsl:value-of select="../../FIELDS/*[name() = concat('TITLE',@NUM)]"/>

Inside of the square brackets the context node is no longer the PHOTO 
element but rather that * child element. So you either need to store the 
attribute value in a variable and use that variable e.g.
    <source>
      <xsl:variable name="n" select="@NUM"/>
      <xsl:value-of select="../../FIELDS/*[name() = concat('TITLE',$n)]"/>

or you can use the current() function e.g.
    <source>
      <xsl:value-of select="../../FIELDS/*[name() = 
concat('TITLE',current()/@NUM)]"/>
as that refers to the node currently processed by an xsl:for-each or 
xsl:apply-templates.



-- 

	Martin Honnen --- MVP XML
	http://msmvps.com/blogs/martin_honnen/


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