From f9a69e8744546602b567dc5787f7d8ee23073bec Mon Sep 17 00:00:00 2001
From: Santiago Pastorino <santiago@wyeworks.com>
Date: Mon, 1 Aug 2011 12:32:17 -0700
Subject: [PATCH] Merge pull request #2324 from zenapsis/3-1-stable

Rails 3.1 throws a Errno::ENOTDIR if files are put in assets directories
---
 railties/lib/rails/engine.rb             |  6 +++---
 railties/lib/rails/paths.rb              |  4 ++++
 railties/test/application/assets_test.rb | 14 ++++++++++++++
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index c41f7d7c2e..2c3f61f404 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -542,9 +542,9 @@ module Rails
     end
 
     initializer :append_assets_path do |app|
-      app.config.assets.paths.unshift(*paths["vendor/assets"].existent)
-      app.config.assets.paths.unshift(*paths["lib/assets"].existent)
-      app.config.assets.paths.unshift(*paths["app/assets"].existent)
+      app.config.assets.paths.unshift(*paths["vendor/assets"].existent_directories)
+      app.config.assets.paths.unshift(*paths["lib/assets"].existent_directories)
+      app.config.assets.paths.unshift(*paths["app/assets"].existent_directories)
     end
 
     initializer :prepend_helpers_path do |app|
diff --git a/railties/lib/rails/paths.rb b/railties/lib/rails/paths.rb
index de3d0b6fc5..55b820b12e 100644
--- a/railties/lib/rails/paths.rb
+++ b/railties/lib/rails/paths.rb
@@ -171,6 +171,10 @@ module Rails
       def existent
         expanded.select { |f| File.exists?(f) }
       end
+      
+      def existent_directories
+        expanded.select {|d| Dir.exists?(d) }
+      end
 
       alias to_a expanded
     end
diff --git a/railties/test/application/assets_test.rb b/railties/test/application/assets_test.rb
index 7fb930bd99..802b737483 100644
--- a/railties/test/application/assets_test.rb
+++ b/railties/test/application/assets_test.rb
@@ -109,5 +109,19 @@ module ApplicationTests
       assert_match "alert()", last_response.body
       assert_equal nil, last_response.headers["Set-Cookie"]
     end
+
+    test "files in any assets/ directories are not added to Sprockets" do
+      %w[app lib vendor].each do |dir|
+        app_file "#{dir}/assets/#{dir}_test.erb", "testing"
+      end
+
+      app_file "app/assets/javascripts/demo.js", "alert();"
+
+      require "#{app_path}/config/environment"
+
+      get "/assets/demo.js"
+      assert_match "alert();", last_response.body
+      assert_equal 200, last_response.status
+    end
   end
 end