1 files changed, 35 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/logger.rb b/activesupport/lib/active_support/logger.rb
index 66e8fcadb4..d055767eab 100644
--- a/activesupport/lib/active_support/logger.rb
+++ b/activesupport/lib/active_support/logger.rb
@@ -2,6 +2,41 @@ require 'logger'
 
 module ActiveSupport
   class Logger < ::Logger
+    # Broadcasts logs to multiple loggers
+    def self.broadcast(logger) # :nodoc:
+      Module.new do
+        define_method(:add) do |*args, &block|
+          logger.add(*args, &block)
+          super(*args, &block)
+        end
+
+        define_method(:<<) do |x|
+          logger << x
+          super(x)
+        end
+
+        define_method(:close) do
+          logger.close
+          super()
+        end
+
+        define_method(:progname=) do |name|
+          logger.progname = name
+          super(name)
+        end
+
+        define_method(:formatter=) do |formatter|
+          logger.formatter = formatter
+          super(formatter)
+        end
+
+        define_method(:level=) do |level|
+          logger.level = level
+          super(level)
+        end
+      end
+    end
+
     def initialize(*args)
       super
       @formatter = SimpleFormatter.new