3 files changed, 9 insertions, 5 deletions
diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb
index 31787b5cc9..d6ad045294 100644
--- a/railties/lib/rails/application/configuration.rb
+++ b/railties/lib/rails/application/configuration.rb
@@ -5,7 +5,7 @@ module Rails
     class Configuration < ::Rails::Engine::Configuration
       include ::Rails::Configuration::Deprecated
 
-      attr_accessor :cache_classes, :cache_store, :colorize_logging,
+      attr_accessor :allow_concurrency, :cache_classes, :cache_store, :colorize_logging,
                     :consider_all_requests_local, :dependency_loading,
                     :filter_parameters,  :log_level, :logger, :metals,
                     :plugins, :preload_frameworks, :reload_engines, :reload_plugins,
@@ -13,11 +13,13 @@ module Rails
 
       def initialize(*)
         super
+        @allow_concurrency   = false
         @colorize_logging    = true
         @filter_parameters   = []
         @dependency_loading  = true
         @serve_static_assets = true
         @time_zone           = "UTC"
+        @consider_all_requests_local = true
       end
 
       def paths
@@ -50,7 +52,7 @@ module Rails
         self.preload_frameworks = true
         self.cache_classes = true
         self.dependency_loading = false
-        self.action_controller.allow_concurrency = true if respond_to?(:action_controller)
+        self.allow_concurrency = true
         self
       end
 
diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index 6a4ebe883b..7887a5d25f 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -8,10 +8,10 @@ module Rails
       def middleware
         @@default_middleware_stack ||= ActionDispatch::MiddlewareStack.new.tap do |middleware|
           middleware.use('::ActionDispatch::Static', lambda { Rails.public_path }, :if => lambda { Rails.application.config.serve_static_assets })
-          middleware.use('::Rack::Lock', :if => lambda { !ActionController::Base.allow_concurrency })
+          middleware.use('::Rack::Lock', :if => lambda { !Rails.application.config.allow_concurrency })
           middleware.use('::Rack::Runtime')
           middleware.use('::Rails::Rack::Logger')
-          middleware.use('::ActionDispatch::ShowExceptions', lambda { ActionController::Base.consider_all_requests_local })
+          middleware.use('::ActionDispatch::ShowExceptions', lambda { Rails.application.config.consider_all_requests_local })
           middleware.use('::ActionDispatch::Callbacks', lambda { !Rails.application.config.cache_classes })
           middleware.use('::ActionDispatch::Cookies')
           middleware.use(lambda { ActionController::Base.session_store }, lambda { ActionController::Base.session_options })
@@ -88,11 +88,12 @@ module Rails
     end
 
     class Generators #:nodoc:
-      attr_accessor :aliases, :options, :colorize_logging
+      attr_accessor :aliases, :options, :fallbacks, :colorize_logging
 
       def initialize
         @aliases = Hash.new { |h,k| h[k] = {} }
         @options = Hash.new { |h,k| h[k] = {} }
+        @fallbacks = {}
         @colorize_logging = true
       end
 
diff --git a/railties/lib/rails/generators.rb b/railties/lib/rails/generators.rb
index 90b513fcb4..8c54014fcb 100644
--- a/railties/lib/rails/generators.rb
+++ b/railties/lib/rails/generators.rb
@@ -67,6 +67,7 @@ module Rails
       no_color! unless config.colorize_logging
       aliases.deep_merge! config.aliases
       options.deep_merge! config.options
+      fallbacks.merge! config.fallbacks
     end
 
     def self.aliases #:nodoc: