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RE: Dynamic Sort Value Solved

2003-07-02 09:14:07
I have used Jeni's suggestion of

<xsl:sort select="@*[name() = $filterOrderBy]" order="ascending" />

which works perfectly. I understand what you are saying about needing to change 
the select so that the order has different values to operate on.

-----Original Message-----
From: David Carlisle [mailto:davidc(_at_)nag(_dot_)co(_dot_)uk]
Sent: 02 July 2003 16:58
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] Dynamic Sort Value Solved



there is only one filterOrderBy node. They are nodes that represent
query parameters from a web page. 

It doesn't matter how many there are, you never want to start a sort key
with / or // or have it be a variable, or any other expression that
gives the same result for every item.

the point of a sort key is that for _each_ item in the list the sort
expression is evaluated to return a number or string and it is these
numbers/strings that are used to order the items.

if every item uses the same string as its sort key, then sorting will
not change the order of any list.

So a sort key effectively has to be a relative path expression that is
evaluated from each item in the list.

(this isn't quite true, a path such as //x[(_at_)name()=current()] would also
give different values for different items)

David

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