Sass with erb won't compile

Question

In Rails, file file.css.sass.erb:

.class-name
    width: <%= \"10px\" %>

Is throwing the error:

Invalid          


        

Answer 1

You can use asset helpers if the erb is only for referencing assets:

background-image: asset-url("rails.png")

...instead of...

background-image: url("<%= image_path('rails.png') %>");

Answer 2

This is indeed a problem with sass-rails, as discussed on GitHub.

So this guy wrote this patch, which completely solves the problem.

The Solution

Add to Gemfile:

gem "sass_rails_patch", "~> 0.0.1"

then run bundle and you're good!