StoryTeller XPath functions

In addition to the standard libxml2 XPath library you have access to the following functions:

 

generate-id()	XSL function that returns a unique node ID.
current()	XSL function that returns the selected node in a Repeater, regardless of current context in the XPath expression.
strs-current-position()	Returns the position of the node returned by current().
strs-current-last()	Returns the position of the last node. Useful if a condition in a repeater should be based on the position of the last node. See Example 42 for an example of an XPath set on a repeater.

Example 42

Only use separator (,) between items in a list, not after the last one

The following XPath expression instantiates a "," separator after all items but the last one.

Items: {item:<description> = <value>{self::*[strs-current-position() = str-current-last()]:,}}