Rails initialization with initialize_on_precompile = false should set assets_dir

2 files changed, 10 insertions, 1 deletions

diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
index 7af256fd99..fb810c41b1 100644
--- a/actionpack/lib/action_controller/railtie.rb
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -17,11 +17,14 @@ module ActionController
       ActiveSupport.on_load(:action_controller) { self.cache_store ||= RAILS_CACHE }
     end
 
+    initializer "action_controller.assets_config", :group => :all do |app|
+      app.config.action_controller.assets_dir ||= app.config.paths["public"].first
+    end
+
     initializer "action_controller.set_configs" do |app|
       paths   = app.config.paths
       options = app.config.action_controller
 
-      options.assets_dir           ||= paths["public"].first
       options.javascripts_dir      ||= paths["public/javascripts"].first
       options.stylesheets_dir      ||= paths["public/stylesheets"].first
       options.page_cache_directory ||= paths["public"].first
diff --git a/railties/test/application/assets_test.rb b/railties/test/application/assets_test.rb
index c18e56a606..9e2cd02d64 100644
--- a/railties/test/application/assets_test.rb
+++ b/railties/test/application/assets_test.rb
@@ -427,6 +427,12 @@ module ApplicationTests
       assert_equal "NoPost;\n", File.read("#{app_path}/public/assets/application.js")
     end
 
+    test "initialization on the assets group should set assets_dir" do
+      require "#{app_path}/config/application"
+      Rails.application.initialize!(:assets)
+      assert_not_nil Rails.application.config.action_controller.assets_dir
+    end
+
     test "enhancements to assets:precompile should only run once" do
       app_file "lib/tasks/enhance.rake", "Rake::Task['assets:precompile'].enhance { puts 'enhancement' }"
       output = precompile!