Re: [xsl] Expandeable Tree!

[Robert Koberg <rob@xxxxxxxxxx>]

Adam J Knight wrote:
> Hi all,
>
> First time posting, so I hope I am doing ok.
>
> I have a xml document that gets generated from a database (MySql).
> <?xml version="1.0"?>
> <tree>
>   <tree_node id="7" depth="0" parent="0" value="Test">
>     <tree_node id="8" depth="1" parent="7" value="Test Sub"/>
>     <tree_node id="9" depth="1" parent="7" value="Test Sub One">
>       <tree_node id="10" depth="2" parent="9" value="Test Sub Two"/>
>     </tree_node>
>   </tree_node>
> </tree>


First, the depth and parent attributes are not necessary because you 
have that information in the XML hierarchy.


> However all xsl processing is done server side (Using PHP 4 XSLT Processor).
> Default view is all level (depth) 0 nodes displayed. A user clicks a html
> link that sends the id of the node clicked to the xsl file as a parameter
> and all children nodes are displayed. If depth is greater than one, all
> ancestor nodes will need to be displayed also.

You could do something like:

<xsl:template match="/">
  <ul class="nav">
    <xsl:apply-templates/>
  </ul>
</xsl:template>

<xsl:template match="*">
  <xsl:choose>
    <xsl:when test="child::*">
      <li class="folder">
        <a href="my.php?id={@id}">
          <xsl:value-of select="@value"/>
        </a>
        <ul>
          <xsl:apply-templates/>
        </ul>
      </li>
    </xsl:when>
    <xsl:otherwise>
      <li class="page">
        <a href="my.php?id={@id}">
          <xsl:value-of select="@value"/>
        </a>
      </li>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

best,
-Rob