您如何在Umbraco中使用Exslt.dyn（尤其是“评估”方法）？

Question

I am trying to execute the string contained in an XSL variable.

Umbraco has hooks for several Exslt pieces, but it seems the Exslt.dyn (Exslt.dynamic) is not one of them.

How do you add it in? Acceptable methods (in order of preference:

1. Writing your own XSLT extension (possibly using existing Umbraco code for Exslt Dynamic).
2. Uploading the XSL from http://www.exslt.org/dyn/functions/evaluate/index.html into Umbraco.
3. Modifying the Umbraco source to add it (possibly using existing Umbraco code for Exslt Dynamic).

The reason I mention Exslt Dyanmic is because some Umbraco XSLT sources show a reference that I am assuming existing in some versions of Umbraco. I cannot find it in the source code, however. (Example: the XSL sources pasted in here: http://our.umbraco.org/projects/starter-kits/business-website-starter-pack/general-%28bugs,-feedback,-feature-requests%29/8085-Changing-the-first-day-to-fx-monday )

Answer 1

Very few XSLT processors implement dyn:evaluate() and Umbraco obviously doesn't use one of these.

There isn't anything you can do in this case.

Ask the Umbraco developers to incorporate an XSLT 2.0 processor in the future -- XSLT 2.0 has a native <xsl:function> instruction for defining functions that can be referenced in any XPath expression.

Answer 2

Not sure if this will work, but if Exslt.ExsltDynamic is supported out of the box in the .Net implementation of XSLT, this should work. In your stylesheet add the namespace xmlns:Exslt.ExsltDynamic="urn:Exslt.ExsltDynamic" (as in the example you linked) and in the exclude-result-prefixes property add Exslt.ExsltDynamic to make it accessible in your xslt file.

Then you can just do something like in your template.