Rails refresh content/force reload
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On visit to index I am creating a new class instance and referencing several database parameters in the view (perfectly normal). 

However, if navigating away from the index page, then on hitting the back button the class instance is not re-created and the index page is using the reference to the old class. Is there a way to force a reload on the content?

Also, I tried using the solution implemented here with the cache:
http://stackoverflow.com/questions/711418/how-to-prevent-browser-page-caching-in-rails

Which made it create a new class instance correctly, however some of the content on the page does not refresh and instead uses the previous page's rendering. So, like above, is there a way to ensure that the view and controller react to the "back" in the same way that a new visit would?