Add examples describing error handling in ActiveSupport::Notifications and ActiveSupport::LogSubscriber documentation files

1 files changed, 5 insertions, 2 deletions

diff --git a/activesupport/lib/active_support/notifications.rb b/activesupport/lib/active_support/notifications.rb
index 01cc363e2b..d968b3a216 100644
--- a/activesupport/lib/active_support/notifications.rb
+++ b/activesupport/lib/active_support/notifications.rb
@@ -67,9 +67,12 @@ module ActiveSupport
   # have a key <tt>:exception</tt> with an array of two elements as value: a string with
   # the name of the exception class, and the exception message.
   # The <tt>:exception_object</tt> key of the payload will have the exception
-  # itself as the value.
+  # itself as the value:
   #
-  # As the previous example depicts, the class <tt>ActiveSupport::Notifications::Event</tt>
+  #   event.payload[:exception]         # => ["ArgumentError", "Invalid value"]
+  #   event.payload[:exception_object]  # => #<ArgumentError: Invalid value>
+  #
+  # As the earlier example depicts, the class <tt>ActiveSupport::Notifications::Event</tt>
   # is able to take the arguments as they come and provide an object-oriented
   # interface to that data.
   #