W3C home > Mailing lists > Public > public-lod@w3.org > September 2012

Re: njh.me - content negotiation in PHP

From: David Wood <david@3roundstones.com>
Date: Sun, 9 Sep 2012 10:31:17 -0400
Cc: <public-lod@w3.org>
Message-Id: <7E7E7E3E-1895-4FFF-AB44-1E2734CBA4E8@3roundstones.com>
To: Nicholas Humfrey <nicholas.humfrey@bbc.co.uk>
Useful, indeed.  Thanks, Nick!

Regards,
Dave




On Sep 9, 2012, at 06:46, Nicholas Humfrey <nicholas.humfrey@bbc.co.uk> wrote:

> Hello,
> 
> Apologies for a bit a shameless self-promotion but I think it might be of
> interest to this group.
> 
> I was recently looking at my WebID:
> http://www.aelius.com/njh#me
> 
> And realised that I could have this instead and save a few bytes ;-)
> http://njh.me/
> 
> So I bought njh.me and I am now using it as the identifier for me, while
> keeping my homepage at http://www.aelius.com/njh/
> 
> 
> 
> Doing content negotiation properly is still badly supported by most
> languages and environments. I wanted to use a lightweight MVC framework and
> chose Slim. Slim has had content negotiation on its backlog for quite a long
> time but I decided that if I wanted to get it working any time soon, I was
> going to have to implement it myself.
> 
> My fork is here:
> https://github.com/njh/Slim/tree/negotiation
> 
> And there is a pull request to bring it into master here:
> https://github.com/codeguy/Slim/pull/376
> 
> 
> The negotiation API is very simple and allows you to do this:
> $format = $app->respondTo('html', 'rdf', 'ttl', 'json');
> 
> The list of suffixes is the file formats that are supported by the
> application. They are ordered by the server's preference of format. The
> client can either use an Accept header to select the desired format or force
> a specific format by appending a suffix to the URL, for example:
> 
> http://njh.me/foaf.rdf
> 
> If you make a request with no Accept header and no suffix, then the first
> format in the list will be returned (HTML). The client can use q values to
> rank its preferred format.
> 
> 
> The Slim application for njh.me is only 32 lines long and it hopefully very
> easy to read:
> https://github.com/njh/njh.me/blob/master/public/index.php
> 
> It depends upon Composer, Slim and EasyRdf. There are some PHPUnit tests to
> ensure the it behaves correctly.
> 
> Web browsers requesting http://njh.me/ will be redirected, using a 303 to my
> homepage. A Semweb clients setting a Accept: application/rdf+xml will be
> sent a 303 redirect to http://njh.me/foaf.rdf, which in turn will return
> RDF/XML. 
> 
> 
> Hopefully this is a pattern that people can re-use and apply to more complex
> examples. 
> 
> 
> nick.
> 
> 
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Received on Sunday, 9 September 2012 14:31:45 UTC

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