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Old August 30th, 2006, 06:48 AM
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Default Date Formatting

I'm trying to re-format a date and it's starting to drive me insane.
I've got the following XML tag:
& need to convert it to:
<DepartureDate>29 August 2006</DepartureDate>
My XSLT currently has the following:
   <xsl:element name="DepartureDate">
     <xsl:value-of select="concat(substring(DateOfTravel, 9, 2), ' ')"/>
     <xsl:variable name="month" select="substring(DateOfTravel, 6, 2)"></xsl:variable>
     <xsl:call-template name="date:month-name">
       <xsl:with-param name="month" select="format-number($month, '###')"/>
     <xsl:value-of select="concat(' ', substring(DateOfTravel, 1, 4))"/>

  <xsl:template name="date:month-name">
    <xsl:param name="month" select="0"/>
    <xsl:value-of select="document('')/*/date:month-names/date:month[$month]"/>
I've tried it without the <xsl:variable name="month" select="substring(DateOfTravel, 6, 2)"></xsl:variable> & just using the substring(DateOfTravel, 6, 2) in the with-param, plus I've tried it without the format-number as well - all seem to give me January as the month.
However if I just 'hard-code' a number in the with-param it works OK, which seems to imply that the "date:month-name" template is OK, it's the parameter that isn't, but running it in debug the parameter is '08'

I'm sure it's something straight-forward, help please

as always - thanks in advance
Old August 30th, 2006, 06:55 AM
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The meaning of a predicate, like $month in


depends on whether it's a number or something else. In your case it's something else - a string - because for some reason you decided to put the value through format-number(). When you use a string as a predicate, values are selected if the string is non-zero-length, and are omitted otherwise.

Michael Kay
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference
Old August 30th, 2006, 07:28 AM
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To add to Michael's reply you can fix by either making sure that $month is numeric, wrapping it in number() for example. Alternatively you can force the issue in the template:
<xsl:value-of select="document('')/*/date:month-names/date:month[position() = $month]"/>

Joe (Microsoft MVP - XML)
Old August 30th, 2006, 07:42 AM
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Cheers Micheal & Joe - it's working sound as a pound. I'd just changed it to
number(substring(DateOfTravel, 6, 2))
when Joe's relpy came in.

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