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Following on from a recent post of mine about how to setup changeable headers using the media picker in Umbraco a new site I have been working on required something a little extra -they wanted the headers to simply be chosen at random. from a given media folder.
First, create a new (blank) XSLT file and add the following:
What this does is it uses the StartNode (a media folder) passed in from the macro to loop through any valid files (in this case jpg/gif/png and pull out the image if it's valid. I was thinking about replacing the for-each loop and simply using the index but I'm not sure if there would be any performance improvement except for if there were a lot of header images in the folder.
You'll then need to create a new macro and add a parameter with the name "StartNode" and select "mediaCurrent" as the Type. That's it :)
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