XSL Test

tclancy · #1 (**permalink**) February 3rd, 2006, 11:49 AM

Given XML like this:

Code:

<nav>
    <tree>
        <page id="5004" desc="Site" sort="5004">
            <page id="5242" desc="Careers" sort="5242">
                <page id="350231838" desc="Careers Update" sort="350231838">
                    <page id="350231839" desc="September 2005" sort="350231839" />
                </page>    
            </page>
        </page>
    </tree>
    <hidden>
        <page id="350231839" />
    </hidden>
</nav>

I want to transform the pages (please ignore the badly formed XML) into a series of unordered lists, but I don't want to output any elements if they appear in the <hidden> section. My current test before I output the ul is xsl:if "child::page", but this does not properly handle the case where the current element has children, but they all appear in the hidden section. How would I ask (essentially), "If this element has at least one child element 'page' that does not show up in the hidden list"?

joefawcett · #2 (**permalink**) February 3rd, 2006, 12:35 PM

Think you need the not function:

Code:

<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="html"/>

  <xsl:template match="/">
    <html>
      <body>
        [list]
          <xsl:apply-templates select="nav/tree/page[not(@id = /nav/hidden/page/@id)]" />
        </ul>
      </body>
    </html>
  </xsl:template>

  <xsl:template match="page">
    <li>
      <xsl:value-of select="@desc"/>
      <xsl:if test="page[not(@id = /nav/hidden/page/@id)]">
        [list]
          <xsl:apply-templates select="page[not(@id = /nav/hidden/page/@id)]"/>
        </ul>
      </xsl:if>
    </li>
  </xsl:template>
</xsl:stylesheet>

This assumes that when you hit a hidden item it has no more visible children.

--

Joe (Microsoft MVP - XML)

tclancy · #3 (**permalink**) February 3rd, 2006, 02:49 PM

Perfect. Thanks. I didn't know how to reference elements in that way.

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