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The data attributes work great. They can fool you when you're not looking out for specific sitatuons. Like a typical error page will be show create or update action and not edit or new.

The killer feature for me is being able to organize my coffeescript code into various classes and execute it all on one page. Makes it much easier to get other developers up to speed on the javascript code.

I'm still looking for a way not to load specific javascript files from the asset pipeline and not litter my views with content_for :head. It's better all in one place.

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