This is a really useful feature for clients, as it can offer an auto-updating selection within a dropdown list. It is documented fully by KK here: http://www.couchcms.com/forum/viewtopic.php?f=4&t=1671&p=2483&hilit=dynamic%3D%27opt_values%27#p2483

I am doing a site for a Festival which has a page listing the venues and a page listing events. I used it so that when the client adds a new venue, the new venue name automatically becomes an option within the venue dropdown list when they create a new event.

Editable region within events.php:

Code: Select all

<cms:editable 
      name="event_venue" 
      label="Venue" 
      desc="Select one from these"
      opt_values='list_venues.html'
      dynamic='opt_values'
      type='dropdown'
      order='25'
   />

list_venues.html in snippets folder:

Code: Select all

<cms:pages masterpage='venue_details.php'>
   <cms:show k_page_title  />|
</cms:pages>