From 848c1b4f47dd64ea2ca1d4547f1d8a74214335c4 Mon Sep 17 00:00:00 2001
From: Katrina Owen <katrina.owen@gmail.com>
Date: Fri, 13 Jul 2012 18:58:29 +0200
Subject: Add documentation for ActiveRecord::Observer.

The instructions about configuration covered only rails-specific usage.
---
 activerecord/lib/active_record/observer.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'activerecord')

diff --git a/activerecord/lib/active_record/observer.rb b/activerecord/lib/active_record/observer.rb
index fdf17c003c..e940d357da 100644
--- a/activerecord/lib/active_record/observer.rb
+++ b/activerecord/lib/active_record/observer.rb
@@ -74,6 +74,12 @@ module ActiveRecord
   #
   # Observers will not be invoked unless you define these in your application configuration.
   #
+  # If you are using Active Record outside Rails, activate the observers explicitly in a configuration or
+  # environment file:
+  #
+  #   ActiveRecord::Base.add_observer CommentObserver.instance
+  #   ActiveRecord::Base.add_observer SignupObserver.instance
+  #
   # == Loading
   #
   # Observers register themselves in the model class they observe, since it is the class that
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