问题
From the Github page it would seem that one can use the Sass helpers (asset_path, asset_url, image_path etc.) in Ruby but I can't figure out how.
I need to set the default_url for a Paperclip attachment and want to use one of my assets from the asset pipeline for that.
回答1:
You can use the sass helpers in SCSS files, but you cannot use them elsewhere. In those cases you need to use the regular asset_path and image_tag helpers.
来源：https://stackoverflow.com/questions/7636204/how-to-use-sass-rails-helpers-in-ruby