向XSL调用模板添加IF子句

Question

I'm very new to XSL and am trying to edit someone elses code.

The xsl calls a template "formatAustralianDate" and returns a number. However, if @created is null it returns NaN days

 <xsl:call-template name="formatAustralianDate">
          <xsl:with-param name="dateValue" select="@Created"/>
 </xsl:call-template> day(s)

is there a way I can test if @Created is null (or blank) and if it is, then just return 0 days? or even better, blank

Answer 1

You could use an xsl:choose here

<xsl:choose>
   <xsl:when test="normalize-space(@created)">
      <xsl:call-template name="formatAustralianDate">
         <xsl:with-param name="dateValue" select="@created"/>
      </xsl:call-template>
   </xsl:when>
   <xsl:otherwise>
       <xsl:text>0</xsl:text>
   </xsl:otherwise>
</xsl:choose>
<xsl:text> day(s)</xsl:text>

If created does not exist, or is an empty string (or is a white-space only-string, which normalize-space then converts to an empty string), then the test returns false, and the xsl:otherwise is evaluated instead.

Answer 2

Bit rusty on XSLT but perhaps something along the lines of:

<xsl:if test="floor(@Created)>0">
 <!-- code here if test passes -->
</xsl:if>