From db2ee54bdad6103359bfd8a00cde28abe3d3332f Mon Sep 17 00:00:00 2001
From: Bernhard Schussek <bschussek@gmail.com>
Date: Thu, 6 Dec 2012 11:27:06 +0100
Subject: [PATCH] [DoctrineBridge] Improved exception message

---
 .../Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php     | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php
index 78594ed8ba..2e385a343f 100644
--- a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php
+++ b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php
@@ -392,7 +392,10 @@ class EntityChoiceList extends ObjectChoiceList
     private function getIdentifierValues($entity)
     {
         if (!$this->em->contains($entity)) {
-            throw new FormException('Entities passed to the choice field must be managed');
+            throw new FormException(
+                'Entities passed to the choice field must be managed. Maybe ' .
+                'persist them in the entity manager?'
+            );
         }
 
         $this->em->initializeObject($entity);