View source for representative-hcard-formats

<h1>representative hCard formats</h1>
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Examples of formats for indicating representative person info about pages that represent individual people.  Part of the [[representative-hcard]] effort.

== FOAF autodiscovery ==
In <cite>[http://lists.usefulinc.com/pipermail/foaf-dev/2002-December/004677.html foaf link rel syntax - for linking to one's foaf from homepage]</cite> on Thu Dec 12 00:44:28 UTC 2002, Dan Brickley proposed:

<pre><nowiki>
<link rel="meta" type="application/rdf+xml" title="FOAF" href="foaf.rdf" />
</nowiki></pre>

for linking from a page that represents an individual to info about that person in a separate resource "foaf.rdf" in the same directory as the current page.  Dan clarifies:

<blockquote><p>If we stick with the convention of a link title of "FOAF", we can get away 
with not worrying too much about defining an html profile for rel="meta".</p><p>BTW I'd also recommend we encourage folk to use the filename foaf.rdf</p></blockquote>

From this we infer the key elements of this format are:
* {{must}} <code>link</code> element in the <code>head</code> of the document
* {{must}} <code>type="application/rdf+xml"</code>
* {{must}} [[rel-meta]] - <code>meta</code> value on the <code>rel</code> attribute
* {{must}} <code>title="FOAF"</code>
* {{should}} <code>href="foaf.rdf"</code>

Some problems with this approach:
* requires use of the <code>link</code> element and thus write access to the <code>head</code> of the document
* <code>meta</code> rel value is too generic, and doesn't really mean "person", or "representative"

== FOAF primaryTopic ==

FOAF also has a facility for specifying the primary topic for a page.

<pre>&lt;link rel="foaf:primaryTopic" href="#somehcard" /></pre>

For people without access to the &lt;head> of a page, an &lt;a> element could be used instead.

== see also ==
* [[representative-hcard]]
* [[representative-hcard-examples]]
* [[representative-hcard-formats]]
* [[representative-hcard-brainstorming]]
* [[hcard]]