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I would like to call a different macro based on whether a querystring parameter exists or not. Can you do this in the template.
Here is the pseudo cod
If the category parameter exists and has a value in the querystring then
Can this be done?
Yes that can be done.
You should be able to create two templates, which you can store seperately and then include them in a third xslt file where you check the parameter and decide, which template to serve.
You can also have more templates in the same file and decide, which one to call dependant on the request parameter.
You could have something like this
<xsl:template match="/"><xsl:choose><xsl:when test="umbraco.library:Request('param')" ='myvalue'><xsl:call-template name="template1" /></xsl:when><xsl:otherwise><xsl:call-template name="template2" /></xsl:otherwise></xsl:choose></xsl:template><xsl:template name="template1"><!-- code for template 1 here --></xsl:template><xsl:template name="template2"><!-- code for template 2 here --></xsl:template>
Hope this helps :)
ok cool, if I read it right then your saying just do it in a "macro" and not in the template, no worries and thanks.
so, can you call a macro from xslt? ie create a macro that refers to a different xslt or razor file and call it from this xslt.
or can you call another xslt from this xslt? ie put template1 in a different xslt file and call it from here.
As I also mentioned above it is possible to include other XSLT files in each other, so you can easily save the above templates in 2 different xslt files, which you then can include or import into your third XSLT file where you handle the logic.
Yo can read more about xsl:include and xsl:import here: http://xml.apache.org/xalan-j/xsltc/xsl_include_design.html
If I get your question correct there is no need to call a macro from XSLT - but if you need to then yes it's possible to do using the umbraco.library:RenderMacroContent() extension.
Hope this helps.