Some XSLT Logic

Reference
A quick overview of how to use XSLT in umbraco.

Contents

• What is XSLT
• How umbraco uses XSLT.
• XSLT - The Basics
• Understanding "currentPage"
• Using XPATH
• XPATH and XSLT Loops
• More Commands and the umbraco.library
• Some XSLT Logic
• Using Variables and Parameters
• XPATH Axes and their Shortcuts.

Some XSLT Logic

XSLT has some logic commands that useful to processing criteria based output.  These commands are the "if" and "choose" commands.

The "if" command is useful for deciding to show content or not based on a single criteria.  There is no "else" in XSLT, so, the if is somewhat limited.

<xsl:if test="@nodeName = 'example' ">

     <!-- do this -->

</xsl:if>

The "choose" command is a bit more powerful in that it allows for multiple choices to be selected from.

<xsl:choose>

     <xsl:when test="">

          <!-- do this -->

     </xsl:when>

     <xsl:otherwise>

          <!-- do this -->

     </xsl:otherwise>

</xsl:choose>

In this example, you can have as many when statements as you like, but must have the otherwise statement.