Customizing the news feeds

During the news step, all documents in a docrepo are published in one or more feeds. Each feed is made available in both Atom and HTML formats. You can control which feeds are created, and which documents are included in each feed, by the facets defined for your repo. The process is similar to defining criteria for the TOC pages.

The main differences are:

• Most properties/RDF predicates of a document are not suitable as facets for news feed (it makes little sense to have a feed for eg. dcterms:title or dcterms:issued). By default, only rdf:type and dcterms:publisher based facets are used for news feed generation. You can control this by specifying the use_for_feed constructor argument.
• The dict that is passed to the selector and identificator functions contains extra fields from the corresponding DocumentEntry object. Particularly, the updated value might be used by your key func in order to sort all entries by last-updated-date. The summary value might be used to contain a human-readable summary/representation of the entire document.
• Each row is passed through the news_item() method. You may override this in order to change the title or summary of each feed entry for the particular feed being constructed (as determined by the binding argument).
• A special feed, containing all entries within the docrepo, is always created.