1.
Notes
Important: it is not possible to use Sitecore XSL Extension Controls such as <sc:text> in an XSL Library. Use Sitecore XSL Extension Functions instead:
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Sitecore XslControl
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Substitution
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<sc:date>
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sc:formatdate(string IsoDate)
sc:formatdate(string IsoDate, string Format)
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<sc:dot>
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dot:Render(.)
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<sc:html>
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sc:fld('html', .)
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<sc:image>
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sc:image('fieldName', .)
sc:image('fieldName', ., 'parameters')
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<sc:link>
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sc:GetLink(., 'parameters')
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<sc:sec>
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sc:HasRight('right', .)
//where right can be: 'a' - Admin, 'c' - Create, 'd' - Delete, 'n' - Rename, 'r' - Read, 'w' - Write
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<sc:text>
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sc:fld('fieldName, .)
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<sc:enableSecurity>
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sc:EnterSecurityState(bool)
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<sc:disableSecurity>
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sc:ExitSecurityState()
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Sitecore XSL Extension Functions provide a superset of the functionality exposed by Sitecore XSL Extension Controls.
To reference the Library from other XSL renderings, add the following element under the existing <xsl:output> element:
<xsl:include href="functions.xslt" />
If an XSL Library will be referenced from most renderings, backup the existing file and add this reference to the XSL boilerplate /sitecore/client/templates/basic.xslt.
Methods in the Library can be invoked to write output:
<sc:link><xsl:call-template name="GetNavTitle" /></sc:link>
Or populate an XSL variable:
<xsl:variable name="parenttitle">
<xsl:call-template name="GetTitle">
<xsl:with-param name="item" select=".." />
</xsl:call-template>
</xsl:variable>
If the same lines of XSL code are ever needed in multiple contexts, they should almost always be factored out to an XSL Library.