Merge pull request #336 from andrey1s/repo

[orm][bug] fix create contentId by Object

Author: dbu

Doctrine/Orm/ContentRepository.php

@@ -60,16 +60,14 @@ public function getContentId($content)
         }
 
         try {
-            $meta = $this->getObjectManager()->getClassMetadata(get_class($content));
+            $class = get_class($content);
+            $meta = $this->getObjectManager()->getClassMetadata($class);
             $ids = $meta->getIdentifierValues($content);
-            if (0 !== count($ids)) {
-                throw new \Exception('Multi identifier values not supported in '.get_class($content));
+            if (1 !== count($ids)) {
+                throw new \Exception(sprintf('Class "%s" must use only one identifier', $class));
             }
 
-            return implode(':', array(
-                get_class($content),
-                reset($ids),
-            ));
+            return implode(':', array($class, reset($ids)));
         } catch (\Exception $e) {
             return;
         }