2010-10-22T23:30:05+11:00 http://leondewey.com/ Leon Dewey leon@leondewey.com 2010-10-19T00:00:00+11:00 http://leondewey.com/2010/10/19/image-hammer <h1>Image Hammer &#8211; fun with Sinatra and Mini magic</h1> <p class="meta">19 Oct 2010 &#8211; Sydney</p> <p>Image hammer is basically a image manipulation service. It has two modes one is based on a profile you create via a rest api and the another revolves around a <span class="caps">GET</span>.</p> <h4>The <span class="caps">GET</span></h4> <p>The get is the the most basic of the two approaches. You pass a image and some manipulation instructions along with a hash and get back the result.</p> <p><a href="http://image-hammer.heroku.com/anything.jpg?resize=100x100&amp;url=http://leondewey.com/images/bike.jpg&amp;hash=f48c45837044a00f622e66064cd631d5">http://image-hammer.heroku.com/anything.jpg?resize=100&#215;100&amp;url=http://leondewey.com/images/bike.jpg&amp;hash=f48c45837044a00f622e66064cd631d5</a></p> <h4>The rest api</h4> <p>With this approach you create a profile (Via a http <span class="caps">POST</span>) then you get a clean url to hit</p> <script src="http://gist.github.com/636373.js"> </script><p>Then you can hit the following urls:<br /> - <a href="http://image-hammer.heroku.com/leondewey-small/bike.jpg">http://image-hammer.heroku.com/leondewey-small/bike.jpg</a><br /> - <a href="http://image-hammer.heroku.com/leondewey-medium/bike.jpg">http://image-hammer.heroku.com/leondewey-medium/bike.jpg</a></p> <p>Orignal<br /> - <a href="http://leondewey.com/images/bike.jpg">http://leondewey.com/images/bike.jpg</a></p> <h4>Installation</h4> <pre class="terminal"><code>$ git clone git://github.com/leondewey/image-hammer.git $ cd image-hammer $ ruby app.rb</code></pre> <p>Note you will need the following gems:<br /> - sinatra<br /> - sinatra/authorization<br /> - sinatra/sequel<br /> - mini_magick</p>