1 files changed, 8 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/transactions.rb b/activerecord/lib/active_record/transactions.rb
index a5955ccba4..62920d936f 100644
--- a/activerecord/lib/active_record/transactions.rb
+++ b/activerecord/lib/active_record/transactions.rb
@@ -10,7 +10,9 @@ module ActiveRecord
     end
 
     included do
-      define_callbacks :commit, :rollback, :terminator => "result == false", :scope => [:kind, :name]
+      define_callbacks :commit, :rollback,
+                       terminator: ->(_, result) { result == false },
+                       scope: [:kind, :name]
     end
 
     # = Active Record Transactions
@@ -243,7 +245,7 @@ module ActiveRecord
         if options.is_a?(Hash) && options[:on]
           assert_valid_transaction_action(options[:on])
           options[:if] = Array(options[:if])
-          fire_on = Array(options[:on]).map(&:to_sym)
+          fire_on = Array(options[:on])
           options[:if] << "transaction_include_any_action?(#{fire_on})"
         end
       end
@@ -286,17 +288,17 @@ module ActiveRecord
       clear_transaction_record_state
     end
 
-    # Call the after_commit callbacks
+    # Call the +after_commit+ callbacks.
     #
     # Ensure that it is not called if the object was never persisted (failed create),
-    # but call it after the commit of a destroyed object
+    # but call it after the commit of a destroyed object.
     def committed! #:nodoc:
       run_callbacks :commit if destroyed? || persisted?
     ensure
       clear_transaction_record_state
     end
 
-    # Call the after rollback callbacks. The restore_state argument indicates if the record
+    # Call the +after_rollback+ callbacks. The +force_restore_state+ argument indicates if the record
     # state should be rolled back to the beginning or just to the last savepoint.
     def rolledback!(force_restore_state = false) #:nodoc:
       run_callbacks :rollback
@@ -304,7 +306,7 @@ module ActiveRecord
       restore_transaction_record_state(force_restore_state)
     end
 
-    # Add the record to the current transaction so that the :after_rollback and :after_commit callbacks
+    # Add the record to the current transaction so that the +after_rollback+ and +after_commit+ callbacks
     # can be called.
     def add_to_transaction
       if self.class.connection.add_transaction_record(self)