Boolean type checking fixed

Doctrine/Validator.php

@@ -227,6 +227,9 @@ class Doctrine_Validator {
      * @return boolean
      */
     public static function isValidType($var, $type) {
+        if($type == 'boolean')
+            return true;
+
         $looseType = self::gettype($var);
         if($type == 'enum')
             $type = 'integer';