[DoctrineBridge] Rewind MongoCursor before use in unique validator

Fixes a regression I introduced in: 265360d
symfony · Mar 8, 2012 · a5ed6ab · a5ed6ab
1 parent 58bd10d
commit a5ed6ab
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntityValidator.php
@@ -94,6 +94,14 @@ public function isValid($entity, Constraint $constraint)
         $repository = $em->getRepository($className);
         $result = $repository->findBy($criteria);
 
+        /* If the result is a MongoCursor, it must be advanced to the first
+         * element. Rewinding should have no ill effect if $result is another
+         * iterator implementation.
+         */
+        if ($result instanceof \Iterator) {
+            $result->rewind();
+        }
+
         /* If no entity matched the query criteria or a single entity matched,
          * which is the same as the entity being validated, the criteria is
          * unique.