fixes #717

lib/Doctrine/Template/Listener/Timestampable.php

@@ -95,6 +95,9 @@ class Doctrine_Template_Listener_Timestampable extends Doctrine_Record_Listener
     {
         $options = $this->_options[$type];
 
+        if ($options['expression'] !== false && is_string($options['expression'])) {
+            return new Doctrine_Expression($options['expression']);
+        } else {
             if ($options['type'] == 'date') {
                 return date($options['format'], time());
             } else if ($options['type'] == 'timestamp') {
@@ -103,4 +106,5 @@ class Doctrine_Template_Listener_Timestampable extends Doctrine_Record_Listener
                 return time();
             }
         }
+    }
 }
\ No newline at end of file

lib/Doctrine/Template/Timestampable.php

@@ -43,11 +43,13 @@ class Doctrine_Template_Timestampable extends Doctrine_Template
                                                     'type'          =>  'timestamp',
                                                     'format'        =>  'Y-m-d H:i:s',
                                                     'disabled'      => false,
+                                                    'expression'    => false,
                                                     'options'       =>  array()),
                                 'updated' =>  array('name'          =>  'updated_at',
                                                     'type'          =>  'timestamp',
                                                     'format'        =>  'Y-m-d H:i:s',
                                                     'disabled'      => false,
+                                                    'expression'    => false,
                                                     'options'       =>  array()));
 
     /**