From e7e1d83ddfceeddd890ecd251bf81e18d3b553cb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Valim?= <jose.valim@gmail.com>
Date: Sat, 14 May 2011 03:59:14 -0700
Subject: [PATCH] Added some docs to controller runtime.

---
 .../lib/active_record/railties/controller_runtime.rb         | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/activerecord/lib/active_record/railties/controller_runtime.rb b/activerecord/lib/active_record/railties/controller_runtime.rb
index a0eecf4f46..9e3b3429e4 100644
--- a/activerecord/lib/active_record/railties/controller_runtime.rb
+++ b/activerecord/lib/active_record/railties/controller_runtime.rb
@@ -2,7 +2,7 @@ require 'active_support/core_ext/module/attr_internal'
 
 module ActiveRecord
   module Railties
-    module ControllerRuntime
+    module ControllerRuntime #:nodoc:
       extend ActiveSupport::Concern
 
     protected
@@ -10,6 +10,9 @@ module ActiveRecord
       attr_internal :db_runtime
 
       def process_action(action, *args)
+        # We also need to reset the runtime before each action
+        # because of queries in middleware or in cases we are streaming
+        # and it won't be cleaned up by the method below.
         ActiveRecord::LogSubscriber.reset_runtime
         super
       end