//admin.scss
@import 'variables-<%= 'brand-name' %>';

body {
   background: $primary-color;
}

{
  test: /.scss(.erb)?/,
  loader: 'sass-loader',
  options: { importExtensions: ['.scss', '.scss.erb', '.css'] }
}

# Render the template to a string
css = Sass::Engine.new(
  render_to_string("path/to/erb_template", :layout => false),
  syntax:     :scss,
  cache:      false,
  read_cache: false,
  style:      :standard,
  sprockets:  {
    context:     self.view_context,
  }
).render

# respond with the rendered string
respond_to do |format|
  format.css { render plain: css, :content_type => "text/css" }
end

rendered_sass = [render_to_string("stylesheets/colours", :layout => false),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "main.scss")),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "base.scss")),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "reset.scss")),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "type.scss")),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "layout.scss")),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "map.scss")),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "audio-player.scss")),
  File.read(Rails.root.join("app", "javascript", "stylesheets", "slider.scss"))].join("nr")