[Rails3] How to send Content-type HTTP header in all my html files generated by Rails3

Hello, I wish to replicate this: <?php header('Content-type: text/html; charset=utf-8'); ?> with Rails 3 in each and every view I got. I guess I should look at application.html.erb to add something. Not only for avoiding this bug: IE 8 Charset Bug - Ravelrumba by Rob Flaherty but also it makes sense to send the html files generated by my views with such header. Can you help me please? Thanks a lot.