select nodes of a specific document type pass document type by param - XSLT

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RJ 7 posts 27 karma points

Nov 19, 2011 @ 22:08
0

Select Nodes of a specific Document Type - Pass Document Type by Param
I know how to select nodes of a specific document type, i.g. select nodes of document type 'News':
```
<xsl:for-each select="$currentPage/ancestor-or-self::* [@isDoc]/News/* [@isDoc]">
```
But... now I want to pass the name of the specific document type to the xslt file by Param. Something like:
```
<xsl:param name="documentType" select="/macro/documentType" />
```
```
<xsl:for-each select="$currentPage/ancestor-or-self::* [@isDoc]/$documentType/* [@isDoc]">
```
Unfortunately, I get a 'Unexpected token' error, I cannot use the $-sign.

Any suggestions how to solve this?

I'd really appreciate it!
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Chriztian Steinmeier 2800 posts 8790 karma points MVP 8x admin c-trib

Nov 19, 2011 @ 22:56

Hi RJ,

You can use the name() function to perform that test/selection, e.g. to select all documents of a specific type:

<xsl:variable name="documentType" select="/macro/documentType" />
<xsl:variable name="siteRoot" select="$currentPage/ancestor-or-self::*[@level = 1]" />

<xsl:for-each select="$siteRoot//*[name() = $documentType]">
   <!-- do stuff -->
</xsl:for-each>

/Chriztian

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Tom Fulton 2030 posts 4998 karma points c-trib

Nov 19, 2011 @ 22:57
0
Hi,

You can use a variable for a document type alias by using the name() function:
```
<xsl:for-each select="$currentPage/ancestor-or-self::* [@isDoc]/* [@isDoc][name() = $documentType]/* [@isDoc]">
```
Hope this helps,
Tom
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RJ 7 posts 27 karma points

Nov 20, 2011 @ 08:22
0
Hello Chriztian, Tom,

Indeed, the function name() did the trick. Thanks! Currently my select statement looks like this and it works:
```
<xsl:variable name="newsDocumentType" select="'News'" />
<xsl:variable name="activitiesDocumentType" select="'Activities'" />
```
```
<xsl:for-each select="$currentPage/ancestor-or-self::* [@isDoc]/* [name() = $newsDocumentType]/* [@isDoc] | $currentPage/ancestor-or-self::* [@isDoc]/* [name() = $activitiesDocumentType]/* [@isDoc]">
```
Suggestions to make this shorter are welcome. The select statement should select all nodes that are either a News item or an Activity.
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Chriztian Steinmeier 2800 posts 8790 karma points MVP 8x admin c-trib

Nov 20, 2011 @ 10:21
0
Hi RJ,

You can shorten that a bit by way of combining the name() tests inside the same predicate:
```
<xsl:for-each select="$currentPage/ancestor-or-self::*[@isDoc]/*[name() = $newsDocumentType or name() = $activitiesDocumentType]/*[@isDoc]">
```
That way, you're also getting rid of the duplication, which is a good thing(TM)

/Chriztian
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RJ 7 posts 27 karma points

Nov 20, 2011 @ 15:48

0

Hello Chriztian,

That was where I was looking for. Thanks! I already tried something like that, but I think I misused the ‘|’-operator, instead of the ‘or’-operator. Despite http://www.w3schools.com/xpath/xpath_operators.asp as a reference, I still do not fully understand what makes the difference between these two operators.

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Chriztian Steinmeier 2800 posts 8790 karma points MVP 8x admin c-trib

Nov 20, 2011 @ 16:44

0

Hi RJ,

You can think of the pipe ( | ) as a join operator - it will join the nodes of two nodesets into a single nodeset; The or operator is just a boolean operation that works as you're used to in countless other languages.

/Chriztian

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RJ 7 posts 27 karma points

Nov 20, 2011 @ 17:15

0

Hello Chriztian,

Thanks for your explanation. It was a great help.

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Select Nodes of a specific Document Type - Pass Document Type by Param