Dragonfly feeds | Dragonfly web framework

Reading feeds from other websites

Dragonfly provides some simple functions for reading atom feeds (RSS will follow). The name Atom applies to a pair of related standards. The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol (AtomPub or APP) is a simple HTTP-based protocol for creating and updating web resources. (source: wikipedia.org)

There are two functions in plugins-active/dragonfly_basic.lsp for reading feeds: read-atom-feed and read-rss-feed. They can be used to read feeds server-side. If you want to load a feed on the client's side, use AJAX and Javascript instead for faster page loads and to offload work from the server.

Example: displaying an atom feed



The following will display all of the entries from the atom feed as HTML:

<% (read-atom-feed "http://website.com/atomfeed.xml") %>

If you'd like to limit the number of entries shown:

<% (read-atom-feed "http://website.com/atomfeed.xml" 3) %>

If you want to see the raw XML without limiting the number of entries:

<% (read-atom-feed "http://website.com/atomfeed.xml" nil true) %>

The read-rss-feed function works in the same manner. These functions are used to display the feed below:

NYTimes.com (RSS)

Michael Cohen Secretly Taped Trump Discussing Payment to Playboy Model
Fri, 20 Jul 2018 21:35:42 GMT nil

The F.B.I. seized the recording in a raid. Its existence recording highlights the potential legal and political danger that Mr. Cohen represents to the president.


Trump Blasts Fed, China and Europe for Putting U.S. Economy at a Disadvantage
Fri, 20 Jul 2018 22:14:12 GMT nil

The president turned his ire on the American central bank, as well as trading partners that are fighting back against his tariffs, in a series of Twitter posts.


Republicans Bow to White House on Chinese Telecom Firm ZTE
Fri, 20 Jul 2018 19:13:03 GMT nil

A pending bill no longer contains the toughest restrictions on a Chinese telecom firm, after the Trump administration persuaded congressional leaders to soften their penalties.


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