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Re: Nestled Template Surrealism


Hi Oliver,

>> I think the root of your problem here is that you never apply
>> templates to the book elements. You need to have something like:
>>
>>   <div align="center">
>>     <xsl:apply-templates />
>>   </div>
>
> I've already tried that - the second nestled table (with all the non
> image data) is not being displayed.

It surprises me a great deal that putting xsl:apply-templates within
the div doesn't work. Perhaps you could send the stylesheet that
contains it and the source XML to me and I could have a look to find
out what's going wrong.

> Now it looks like:
>
> <br /><br /><div align="center">
>
>  <xsl:for-each select="/">
>   <xsl:apply-templates select="book[@variant = 'Book' and @style =
'Fiction']" />>
>   <xsl:apply-templates select="book[@variant = 'Book' and @style =
'Non-Fiction']" />>
>   <xsl:apply-templates select="book[@variant = 'Graphic_Novel' and @style =
'Fiction']" />>
>   <xsl:apply-templates select="book[@variant = 'Magazine' and @style =
'Non-Fiction']" />>
>  </xsl:for-each>
>
> </div><br /><br />
>
>> where at the moment you have a commented-out xsl:for-each.
> ? I'm not sure what you're looking at... :)

In the online stylesheet that I looked at, the xsl:for-each you show
above was given within comments. As this is work in progress, no doubt
the stylesheet is changing all the time. Anyway, the reason the above
xsl:for-each doesn't work is that the xsl:for-each selects the root
node to be the current node. Within the xsl:for-each, all the paths
(selecting the books of various kinds) are relative to this current
node. The book elements are not children of the root node, and
therefore no book elements are selected.  If you change the
xsl:for-each to select the library element (which is the document
element of your XML and holds the book elements) instead, i.e.:

  <xsl:for-each select="/library">
    ...
  </xsl:for-each>

then it will work. Unless there's something else wrong in your
stylesheet, of course.

> It could be that my concept is unworkable in XSL:

I doubt that. From what I saw of your stylesheet, it looked fine aside
from the obvious trouble that you're having selecting nodes properly.
Wherever you have an XPath, you have to think about what the current
node is and therefore what the path you use has to be relative from.
This is your problem in the xsl:for-each and was your problem in the
image_link template as well.

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/


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