Unique identifier and multiple classes with XPath

Question

I am using XSLT to display a menu ulcontaining liand a.

I need the following:

• Find the first item li aand add a class .firstitem.
• Find the last item li aand add a class .lastitem.
• Find the active element li aand add a class .active.
• Add a unique identifier to each item li a. (Ie the URL of the menu as an identifier).

I managed to do step 1-3. Also, when I try to add classes, it actually replaces other classes, rather than adding to them.

Here is the code:

<li>
    <a>
        <!-- Add .firstitem class -->
        <xsl:if test="position() = 1">
            <xsl:attribute name="class">firstitem</xsl:attribute>
        </xsl:if>

        <!-- Add .lastitem class -->
        <xsl:if test="postition() = count(//Page)">
            <xsl:attribute name="class">lastitem</xsl:attribute>
        </xsl:if>

        <!-- Add .active class -->
        <xsl:if test="@Active='True'">
            <xsl:attribute name="class">active</xsl:attribute>
        </xsl:if>

        <!-- Add link URL -->
        <xsl:attribute name="href"><xsl:value-of select="@FriendlyHref" disable-output-escaping="yes"/></xsl:attribute>

        <!-- Add link text -->
        <xsl:value-of select="@MenuText" disable-output-escaping="yes"/>
    </a>
</li>

, a . class. ?

4 - , @MenuText. , replace(), , , replace() .

, , id. ?

Answer 1

<a>
       <xsl:attribute name="class">
            <!-- Add .firstitem class -->
            <xsl:if test="position() = 1">
                <xsl:text> firstitem</xsl:text>
            </xsl:if>
            <!-- Add .lastitem class -->
            <xsl:if test="postition() = count(//Page)">
                <xsl:text> lastitem</xsl:text>
            </xsl:if>

            <!-- Add .active class -->
            <xsl:if test="@Active='True'">
                <xsl:text> active</xsl:text>
           </xsl:if>
       </xsl:attribute>

        <!-- Add link URL -->
        <xsl:attribute name="href"><xsl:value-of select="@FriendlyHref" disable-output-escaping="yes"/></xsl:attribute>

        <!-- Add link text -->
        <xsl:value-of select="@MenuText" disable-output-escaping="yes"/>
    </a>

replace() - XSLT2.0. XSLT1.0 , .

Answer 2

Martijn Laarman, 1-3 :

, XSLT 1.0 ( ), .

<!-- declare at top level -->
<xsl:variable 
  name="validRange" 
  select="'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789' 
/>

<!-- later, within a template… -->
<xsl:attribute name="id">
  <xsl:value-of select="
    concat(
      'id_',
      translate(
        @MenuText, 
        translate(@MenuText, $validRange, ''),
        ''
      )
    )
  " />
</xsl:attribute>

translate() @MenuText, . translate(), @MenuText, . .

:

<xsl:template name="HtmlIdFromString">
  <xsl:param name="input" select="''" />
  <xsl:value-of select="
    concat('id_', translate( $input, translate($input, $validRange, ''), ''))
  " />
</xsl:template>

:

<xsl:attribute name="id">
  <xsl:call-template name="HtmlIdFromString">
    <xsl:with-param name="input" select="@MenuText" />
  </xsl:call-template>
</xsl:attribute>

Answer 3

<xsl:template match="@*">
    <xsl:copy>
        <xsl:apply-templates select="@*"/>
    </xsl:copy>
</xsl:template>

.

replace() xslt 2.0, xslt 1.0.