Introducing dry_views
Enhancer of Rails' content_for system. Allows defaults, and no_content_for overrides in partials. For Rails 3, 4.
Why? Keep the views dry with content_for_with_default and friends! Complete flexibility in defining defaults and overrides. Remove most or all logic from views. Allow for no content to override a default. DryViews provides extensions to ActionView::Helpers::CaptureHelper, which is part of ActionPack: