title: How to re-render a graph at a given interval that retrieves data from a controller in Rails?
body: <p>I have a Highchart's graph that needs to be regenerated every minute.  I was curious as to how one would refresh the following graph?  <a href="http://pastebin.com/bEwkX8Fk" rel="nofollow">http://pastebin.com/bEwkX8Fk</a></p>
  
  <p>I thought perhaps just refreshing the div may be sufficient, but after further thought I realized that I'd probably have to initiate some kind of call from the controller to update the data for the graph.  Any thoughts here as to the correct approach?  </p>
  
  <p>I am thinking now that perhaps updating it with the Highcharts json functionality would be best, but I'm not sure where to start yet there.</p>