fix #88 (wrong number of arguments for transaction method)

CHANGELOG.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 3.0.22 (not yet released)
+
+ * fixed [issue 88](https://github.com/aasm/aasm/issues/88): wrong number of arguments for transaction method
+
 ## 3.0.21
 
  * support nested ActiveRecord transactions ([@ozeias](https://github.com/ozeias))

lib/aasm/persistence/active_record_persistence.rb

@@ -132,7 +132,7 @@ module AASM
         end
 
         def aasm_fire_event(name, options, *args)
-          transaction(:requires_new => true) do
+          self.class.transaction(:requires_new => true) do
             super
           end
         end