ahabman

You can’t use class variables in rails.  Unless you’d like to develop in production mode (specifically with config.cache_classes = true).  In development mode all classes are reloaded on each request, which clears all class variables.

I had the perfect place to use them - while running a mass synchronization, and needing to store the timestamp (I couldn’t use the latest last_updated from each record).  It worked perfect in ./script/console but failed entirely through the browser.