lib/ustyle/engine.rb in ustyle-1.5.8 vs lib/ustyle/engine.rb in ustyle-1.6.1

@@ -15,10 +15,18 @@
     initializer "ustyle.update_asset_paths", &add_paths_block
     initializer "ustyle.update_asset_paths", group: :assets, &add_paths_block
   end
 
   class Railtie < ::Rails::Railtie
-    initializer :setup_autoprefixer, group: :all do |app|
-      AutoprefixerRails.install(app.assets, *Ustyle.autoprefixer_config(app))
+    if config.respond_to?(:assets) and not config.assets.nil?
+      config.assets.configure do |env|
+        AutoprefixerRails.install(env, Ustyle.autoprefixer_config)
+      end
+    else
+      initializer :setup_autoprefixer, group: :all do |app|
+        if defined? app.assets and not app.assets.nil?
+          AutoprefixerRails.install(app.assets, Ustyle.autoprefixer_config)
+        end
+      end
     end
   end
 end