Merge branch 'master' of https://github.com/rails/rails into performance_test

1 files changed, 56 insertions, 0 deletions

diff --git a/actionpack/lib/sprockets/railtie.rb b/actionpack/lib/sprockets/railtie.rb
new file mode 100644
index 0000000000..fe3c8c9783
--- /dev/null
+++ b/actionpack/lib/sprockets/railtie.rb
@@ -0,0 +1,56 @@
+module Sprockets
+  class Railtie < Rails::Railtie
+    def self.using_coffee?
+      require 'coffee-script'
+      defined?(CoffeeScript)
+    rescue LoadError
+      false
+    end
+
+    def self.using_scss?
+      require 'sass'
+      defined?(Sass)
+    rescue LoadError
+      false
+    end
+
+    config.app_generators.javascript_engine :coffee if using_coffee?
+    config.app_generators.stylesheet_engine :scss   if using_scss?
+
+    # Configure ActionController to use sprockets.
+    initializer "sprockets.set_configs", :after => "action_controller.set_configs" do |app|
+      ActiveSupport.on_load(:action_controller) do
+        self.use_sprockets = app.config.assets.enabled
+      end
+    end
+
+    # We need to configure this after initialization to ensure we collect
+    # paths from all engines. This hook is invoked exactly before routes
+    # are compiled.
+    config.after_initialize do |app|
+      assets = app.config.assets
+      next unless assets.enabled
+
+      app.assets = asset_environment(app)
+      app.routes.append do
+        mount app.assets => assets.prefix
+      end
+
+      if config.action_controller.perform_caching
+        app.assets = app.assets.index
+      end
+    end
+
+    protected
+
+    def asset_environment(app)
+      require "sprockets"
+      assets = app.config.assets
+      env = Sprockets::Environment.new(app.root.to_s)
+      env.static_root = File.join(app.root.join("public"), assets.prefix)
+      env.paths.concat assets.paths
+      env.logger = Rails.logger
+      env
+    end
+  end
+end
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