I need to generate some xslt that will loop through all nodes of a particular nodetypealias, in order to sort them into an order based on a property of the nodetype.
each node has a "votes" property and I need to see what the ranking of a particular node is, e.g.
node 1 - 1000 votes - rank 1
node 2 - 1000 votes - rank 1 (it share's the winning number of votes)
node 3 - 300 votes - rank 2
node 4 - 200 votes - rank3 etc etc.
in sloppy-pseudocode I think the xslt should look something like this.
$count = 1
<xsl:for-each select="umbraco.library:GetXmlNodeById($source)/node [string(data [@alias='umbracoNaviHide']) != '1'>
<xsl:sort by property"votes">
if(thisisfirstnode)
{
$votes = votes property of node 1
}
if(vote property of current node < $votes)
{
$count++;
}
if(currentnode id = "x")
{
break out of for each loop.
}
</xsl:for-each>
do something interesting with the current value of $count
But is any of this possible in xslt? I know amending the variable isn't possible, do I have to use a seperate template containing some recursion, and can anyone point me to a simple example of this type of recursion in xslt?
Hi again - I thought about it some more and came up with this, which will list all the nodes sorted by rank, descending - so you can see how to take that value when rendering a particular node (for CSS maybe?):
<!-- Grab reference to the parent node -->
<xsl:variable name="sourceNode" select="umbraco.library:GetXmlNodeById($source)" />
<xsl:template match="/">
<!-- Grab the top voted node -->
<xsl:variable name="topNode" select="$sourceNode/node[not(../node/data[@alias = 'votes'] > data[@alias = 'votes'] )]" />
<p>
Top voted: <strong><xsl:value-of select="$topNode/@nodeName" /></strong> with
<xsl:value-of select="$topNode/data[@alias = 'votes']" /> votes!
</p>
<p>
Number of nodes with a value less than the top voted:
<xsl:value-of select="count($sourceNode/node[data[@alias = 'votes'] < $topNode/data[@alias = 'votes']])" />
</p>
<!-- List all nodes sorted by rank -->
<xsl:apply-templates select="$sourceNode/node">
<xsl:sort select="count(../node[data[@alias = 'votes'] < current()/data[@alias = 'votes']])" data-type="number" order="descending" />
</xsl:apply-templates>
</xsl:template>
<!-- Output for each individual node -->
<xsl:template match="node">
<xsl:variable name="myVotes" select="data[@alias = 'votes']" />
<div>
<p>
Node: <xsl:value-of select="@nodeName" /> -
Rank: <xsl:value-of select="count(../node[data[@alias = 'votes'] < $myVotes])" />
</p>
</div>
</xsl:template>
<!-- No output for these -->
<xsl:template match="node[data[@alias = 'umbracoNaviHide'] = 1]" />
Wow! thats wonderful Chriztian! I didn't expect a complete bit of xslt, I thought i'd get a link to a example of something using similar methods. Thank you very very much for this, you're a star!
Tricky XSLT question
I need to generate some xslt that will loop through all nodes of a particular nodetypealias, in order to sort them into an order based on a property of the nodetype.
each node has a "votes" property and I need to see what the ranking of a particular node is, e.g.
node 1 - 1000 votes - rank 1
node 2 - 1000 votes - rank 1 (it share's the winning number of votes)
node 3 - 300 votes - rank 2
node 4 - 200 votes - rank3 etc etc.
in sloppy-pseudocode I think the xslt should look something like this.
$count = 1 <xsl:for-each select="umbraco.library:GetXmlNodeById($source)/node [string(data [@alias='umbracoNaviHide']) != '1'> <xsl:sort by property"votes"> if(thisisfirstnode) { $votes = votes property of node 1 } if(vote property of current node < $votes) { $count++; } if(currentnode id = "x") { break out of for each loop. } </xsl:for-each> do something interesting with the current value of $countBut is any of this possible in xslt? I know amending the variable isn't possible, do I have to use a seperate template containing some recursion, and can anyone point me to a simple example of this type of recursion in xslt?
Many thanks
Hi Shaun,
Without understanding your scenario completely, here's a way to get the final value of $count:
<xsl:variable name="sourceNode" select="umbraco.library:GetXmlNodeById($source)" /> <xsl:for-each select="$sourceNode/node[not(data[@alias = 'umbracoNaviHide']) = 1]"> <xsl:sort select="data[@alias = 'votes']" data-type="number" order="descending" /> <xsl:if test="position() = 1"> <!-- Output number of nodes with a votes value less than the top voted --> <xsl:value-of select="count(../node[data[@alias = 'votes'] < current()/data[@alias = 'votes']])" /> </xsl:if> </xsl:for-each>/Chriztian
Hi again - I thought about it some more and came up with this, which will list all the nodes sorted by rank, descending - so you can see how to take that value when rendering a particular node (for CSS maybe?):
/Chriztian
Wow! thats wonderful Chriztian! I didn't expect a complete bit of xslt, I thought i'd get a link to a example of something using similar methods. Thank you very very much for this, you're a star!
Thanks Shaun,
Thing is -- I have CXA ("Compulsory XSLT Addiction" :-)
/Chriztian
Chriztian destroyed another XSLT problem! Sweet solution! Kudos! /Lx
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