This is the Channel Management product, for managing and displaying RDF and RSS news summaries found on many popular portals (including zope.org).

It is a two part product, consisting of a Channel Management product that must be installed, and the tag used for displaying channels.

Install a Channel Management product at the head of your document tree, it will install several channels by default, (which you can delete at your leisure).

There is a default method installed for display channels called showChannel. It is deliberately ugly so that you will change it d8) You can provide a default template by using showChannel, or you can customise individual channels by adding in a showChannel DTML Method underneath that particular channel (you can add images etc under here as well if you wish).

If you want to delete a channel, you can simply delete it using the standard management interface underneath the Channel Manager.

The <dtml-channel> tag takes one parameter show which is an expression. You can pass in a single Channel Id, or a LIST of Channel Ids, so you only display those channels you are interested it (or subscribed to if that's how you're using it to provide content to users).

The Channel Manager also provides a listChannels() method so you can iterate over the list of channels if you want and display them individually.

The Channel Manager allows you to set the number of items displayed for each Channel, 0 means display all the items returned by the remote site. This can get noisy for some sites, so you can set this to 5 or 10 or whatever for a more compact display.

This product is based on the slashbox code, and requires xmllib and sax et. al. to be installed.