Subject: RE: [xsl] templates with optional paramters From: "Michael Kay" <michael.h.kay@xxxxxxxxxxxx> Date: Fri, 22 Mar 2002 10:57:48 -0000 |
The only way you can determine whether a parameter was actually supplied on the call is by testing whether the value is different from the default value. If the caller supplied the default value, you can't tell whether it was supplied explicitly or defaulted. For example you can define <xsl:param name="p1" select="'## default ##'/> and then test <xsl:if test="$p1='## default ##'"> but you can't tell whether it has this value because the parameter wasn't supplied, or because the caller supplied this value. Michael Kay Software AG home: Michael.H.Kay@xxxxxxxxxxxx work: Michael.Kay@xxxxxxxxxxxxxx > -----Original Message----- > From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx > [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of > robert.soesemann@xxxxxx > Sent: 22 March 2002 10:10 > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx > Subject: [xsl] templates with optional paramters > > > I have an xslt template with 2 paramter. One of them must not > be specified. > How can I find out if one or two params where specified? Do I > need two versions of the template with mode? Or can I check with =''? > > <xsl:template name="foo"> > one mandatory paramter > one optional paramter > ...do things... > </xsl:template> > > One can call it by: > > <xsl:call-template name="foo"> > <xsl:with-param name=="bar_mandatory" select="$whatever" /> > <xsl:with-param name="bar_optional" select="$whatever" /> > </xsl:call-template> > > OR > > <xsl:call-template name="foo"> > <xsl:with-param name=="bar_mandatory" select="$whatever" /> > </xsl:call-template> > > > Rob > ______________________________________________________________ > ________________ > Darf es ein bisschen mehr sein? Mehr Speicher, mehr Mail, > mehr Erlebnis, > mehr Leistung, mehr Prämie unter http://club.web.de/?mc=021102 > > > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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