XSL foreach-Schleife mit param keine Werte zurückgibt

Question

Also ich das folgende XML-Dokument haben:

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<couriersystem title="Courier System" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:noNamespaceSchemaLocation="system.xsd"> 
    <branches> 
     <branch bid="1"> 
      <name>Headquarters</name> 
      <address> 
       58, Main Street, Edinburgh, R79 2LR 
      </address> 
      <manager mid="1" /> 
      <headoffice hid="1" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="None" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="2"> 
      <name>Convenience Local Branch</name> 
      <address> 
       118, Renfrew Avenue, Dumfries, J6 8CZ 
      </address> 
      <manager mid="2" /> 
      <headoffice hid="1" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="Bicycle" /> 
       <method name="Car" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="3"> 
      <name>Westwood Shopping Centre</name> 
      <address> 
       119, London Street, Nidrie, F57 8NE 
      </address> 
      <manager mid="3" /> 
      <headoffice hid="1" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="Bicycle" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="4"> 
      <name>Logistics Warehouse</name> 
      <address> 
       160, Main Road, Dunfermline, A15 0PO 
      </address> 
      <manager mid="4" /> 
      <headoffice hid="1" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="Car" /> 
       <method name="Van" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="5"> 
      <name>Kingdom of Fife Shopping Centre</name> 
      <address> 
       92, Central Lane, Dunfermline, U38 2OD 
      </address> 
      <manager mid="5" /> 
      <headoffice hid="7" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="Bicycle" /> 
       <method name="Car" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="6"> 
      <name>Capital Branch</name> 
      <address> 
       95, High Street, Inverness, W91 8IW 
      </address> 
      <manager mid="6" /> 
      <headoffice hid="7" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="Car" /> 
       <method name="Van" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="7"> 
      <name>Glasgow City</name> 
      <address> 
       94, Harris Place, BathgateGlasgow, E74 2MR 
      </address> 
      <manager mid="7" /> 
      <headoffice hid="1" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="Car" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="8"> 
      <name>Edinburgh Omni Centre</name> 
      <address> 
       119, West Road, Edinburgh, A79 2EG 
      </address> 
      <manager mid="8" /> 
      <headoffice hid="1" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="None" /> 
      </deliverymethods> 
     </branch> 
     <branch bid="9"> 
      <name>Royal Plaza</name> 
      <address> 
       81, Royal Plaza, Bathgate, U52 7GV 
      </address> 
      <manager mid="9" /> 
      <headoffice hid="7" /> 
      <!-- delivery methods --> 
      <deliverymethods> 
       <method name="Bicycle" /> 
       <method name="Car" /> 
      </deliverymethods> 
     </branch> 
    </branches> 
    <employees> 
     <employee eid="1"> 
      <nin>AZ123518D</nin> 
      <firstname>Peter</firstname> 
      <lastname>Smith</lastname> 
      <gender>Male</gender> 
      <dob>1994-02-11</dob> 
      <email>ps11@gmail.com</email> 
      <address> 
       119, London Street, Nidrie, F57 8NE 
      </address> 
      <tel>07005748900</tel> 
      <salary>30526</salary> 
      <empbranch bid="1" /> 
      <supervisor sid="1" /> 
     </employee> 
     <employee eid="2"> 
      <nin>CN174869F</nin> 
      <firstname>Jennifer</firstname> 
      <lastname>Black</lastname> 
      <gender>Female</gender> 
      <dob>1984-12-24</dob> 
      <email>jb21@gmail.com</email> 
      <address> 
       161, South Road, Nidrie, W79 8WG 
      </address> 
      <tel>07555111222</tel> 
      <salary>40576</salary> 
      <empbranch bid="2" /> 
      <supervisor sid="1" /> 
     </employee> 
     <employee eid="3"> 
      <nin>ET127654M</nin> 
      <firstname>Aaron</firstname> 
      <lastname>Jones</lastname> 
      <gender>Male</gender> 
      <dob>1968-03-15</dob> 
      <email>aj31@gmail.com</email> 
      <address> 
       66, High Road, Yoker, Q47 4SR 
      </address> 
      <tel>07856471267</tel> 
      <salary>30526</salary> 
      <empbranch bid="3" /> 
      <supervisor sid="1" /> 
     </employee> 
     <!-- snip --> 
    </employees> 
</couriersystem> 

Und ich versuche, dieses xsl Dokument unten zu verwenden:

<?xml version="1.0" encoding="utf-8"?> 
<!-- datetime2.xsl --> 
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> 
    <xsl:output method="html"/> 
    <xsl:template match="/"> 
     <html> 
      <body> 
       <h1 class="title">Courier System - Branches</h1><hr /><br /> 
       <nav> 
        <ul> 
         <li><a href="#all">Show All</a></li> 
         <li><a href="#bymanager">By Manager</a></li> 
        </ul> 
       </nav> 

       <!-- show all --> 
       <h2 id="all">All Branches</h2> 
       <table border="1"> 
        <tr bgcolor="#C0C0C0"> 
         <th>ID</th> 
         <th>Branch Name</th> 
         <th>Delivery Methods</th> 
        </tr> 
        <xsl:for-each select="//branch"> 
         <tr> 
          <td><xsl:value-of select="@bid" /></td> 
          <td><xsl:value-of select="address" /></td> 
          <td> 
           <xsl:for-each select="deliverymethods/method"> 
            <xsl:choose> 
             <xsl:when test="position() = last()"> 
              <xsl:value-of select="@name" /> 
             </xsl:when> 
             <xsl:otherwise> 
              <xsl:value-of select="@name" />, 
             </xsl:otherwise> 
            </xsl:choose> 
           </xsl:for-each> 
          </td> 
         </tr> 
        </xsl:for-each> 
       </table> 
       <a class="anchor-top" href="#">Back to top</a> 

       <!-- by manager --> 
       <h2 id="bymanager">Show Branches by Manager</h2> 
       <table border="1"> 
        <tr bgcolor="#C0C0C0"> 
         <th>ID</th> 
         <th>Branch Name</th> 
         <th>Delivery Methods</th> 
         <th>Manager</th> 
        </tr> 
        <xsl:for-each select="//branch"> 
         <xsl:sort select="manager/@mid" order="ascending" /> 
         <tr> 
          <td><xsl:value-of select="@bid" /></td> 
          <td><xsl:value-of select="address" /></td> 
          <td> 
           <xsl:for-each select="deliverymethods/method"> 
            <xsl:choose> 
             <xsl:when test="position() = last()"> 
              <xsl:value-of select="@name" /> 
             </xsl:when> 
             <xsl:otherwise> 
              <xsl:value-of select="@name" />, 
             </xsl:otherwise> 
            </xsl:choose> 
           </xsl:for-each> 
          </td> 
          <td> 
           <xsl:call-template name="showManager"> 
            <xsl:with-param name="mid" select="manager/@mid" /> 
           </xsl:call-template> 
          </td> 
         </tr> 
        </xsl:for-each> 
       </table> 
       <a class="anchor-top" href="#">Back to top</a> 
      </body> 
     </html> 
    </xsl:template> 
    <xsl:template name="show_title" match="//employees"> 
     <xsl:param name="mid" /> 
     <xsl:for-each select="employee[@eid=$mid]"> 
      <xsl:value-of select="firstname" /> 
     </xsl:for-each> 
    </xsl:template> 
</xsl:stylesheet> 

Was Ich versuche zu erreichen, ist der Vorname jedes Managers in der Manager-Spalte in der Zeile: . Dies geschieht mithilfe der Vorlage und des Parameters, über den ich sende.

Allerdings zeigt meine XML-Seite beim Ausführen nur einen leeren Bildschirm, so dass irgendwo ein Fehler auftritt, den ich aber nicht finden kann.

Vielen Dank im Voraus!

Answer 1

Sie haben xsl:call-template name="showManager" aber xsl:template name="show_title". Ich sehe keine Notwendigkeit für call-template, definieren einen Schlüssel <xsl:key name="mid" match="employee" use="@eid"/>, dann anstelle der call-template Verwendung

<xsl:apply-templates select="key('mid', manager/@mid)"/> 

und haben eine Vorlage

<xsl:template match="employee"> 
    <xsl:if test="position() > 1">, </xsl:if> 
    <xsl:value-of select="firstname" /> 
</xsl:template> 

Wenn Sie es wissen, kann nur ein Manager Referenz sein dann brauchen Sie natürlich nicht die <xsl:if test="position() > 1">, </xsl:if> Prüfung.