updated AS:Callbacks doc for terminator option in define_callbacks method

The change is commited at ba552764344bc0a3c25b8576ec11f127ceaa16da

1 files changed, 4 insertions, 3 deletions

diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb
index 2cffa342ef..fb16c17936 100644
--- a/activesupport/lib/active_support/callbacks.rb
+++ b/activesupport/lib/active_support/callbacks.rb
@@ -658,10 +658,11 @@ module ActiveSupport
       #
       # * <tt>:terminator</tt> - Determines when a before filter will halt the
       #   callback chain, preventing following callbacks from being called and
-      #   the event from being triggered. This is a string to be eval'd. The
-      #   result of the callback is available in the +result+ variable.
+      #   the event from being triggered. This should be a lambda to be executed.
+      #   The current object and the return result of the callback will be called
+      #   with the lambda.
       #
-      #     define_callbacks :validate, terminator: 'result == false'
+      #     define_callbacks :validate, terminator: ->(target,result) { result == false },
       #
       #   In this example, if any before validate callbacks returns +false+,
       #   other callbacks are not executed. Defaults to +false+, meaning no value