This took me forever to figure out, so I hope I’ll be able to save someone a few hours of annoyance someday.

Serendeputy is always recalculating, and I needed to make sure that the browsers wouldn’t cache the page when someone clicked off and then hit the back button. This is how I was able to do it.


..in application_controller.rb..
  before_filter :set_cache_buster
  def set_cache_buster
    response.headers["Cache-Control"] = "no-cache, no-store, max-age=0, must-revalidate"
    response.headers["Pragma"] = "no-cache"
    response.headers["Expires"] = "Fri, 01 Jan 1990 00:00:00 GMT"
  end


I just tested this out, and it works on Safari and Firefox on the Mac, and IE7, Firefox and Chrome on the PC.

Hope this helps.

This entry was posted on Tuesday, April 14th, 2009 at 12:18 pm and is filed under Web, Programming, Ruby. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.