BUG: refs #0355. Explicitly cast feed revision id as a string for pgsql

Author: zachmullen

core/models/pdo/ItemRevisionModel.php

@@ -89,12 +89,12 @@ function delete($revisiondao)
       $bitstream_model->delete($bitstream);
       }
 
-
+    // explicitly typecast the id to a string, for postgres
     $deleteType = array(MIDAS_FEED_CREATE_REVISION);
     $sql = $this->database->select()
                           ->setIntegrityCheck(false)
                           ->from(array('p' => 'feed'))
-                          ->where('ressource = ?', $revisiondao->getKey());
+                          ->where('ressource = ?', (string)$revisiondao->getKey());
 
     $rowset = $this->database->fetchAll($sql);
     $this->ModelLoader = new MIDAS_ModelLoader();