Add option to configure Sprockets logger

actionpack/CHANGELOG.md

@@ -1,5 +1,7 @@
 ## Rails 3.2.0 (unreleased) ##
 
+*   Add config.assets.logger to configure Sprockets logger *Rafael França*
+
 *   Use a BodyProxy instead of including a Module that responds to
     close. Closes #4441 if Active Record is disabled assets are delivered
     correctly *Santiago Pastorino*

actionpack/lib/sprockets/railtie.rb

@@ -21,7 +21,7 @@ module Sprockets
       require 'sprockets'
 
       app.assets = Sprockets::Environment.new(app.root.to_s) do |env|
-        env.logger  = ::Rails.logger
+        env.logger  = config.assets.logger || ::Rails.logger
         env.version = ::Rails.env + "-#{config.assets.version}"
 
         if config.assets.cache_store != false

railties/guides/source/configuring.textile

@@ -156,6 +156,8 @@ Rails 3.1, by default, is set up to use the +sprockets+ gem to manage assets wit
 
 * +config.assets.compile+ is a boolean that can be used to turn on live Sprockets compilation in production.
 
+* +config.assets.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby +Logger+ class. Defaults to the same configured at +config.logger+.
+
 
 h4. Configuring Generators