From 5b49112cdd6534e3b280b614b85ddf15ef93f20b Mon Sep 17 00:00:00 2001
From: avl <alex.litovchenko@gmail.com>
Date: Tue, 23 Dec 2008 12:25:45 +0200
Subject: [PATCH] fix UB for m2m

---
 ipf/form/model.php | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/ipf/form/model.php b/ipf/form/model.php
index 499a8cc..0e447b9 100644
--- a/ipf/form/model.php
+++ b/ipf/form/model.php
@@ -46,8 +46,14 @@ class IPF_Form_Model extends IPF_Form
                 }
                 if (array_key_exists($uname,$db_columns))
                     $this->addDBField($uname,$db_columns[$uname]);
-                elseif (array_key_exists($uname,$db_relations))
-                    $this->addDBRelation($uname,$db_relations[$uname],$db_columns[$db_relations[$uname]->getLocalFieldName()]);
+                elseif (array_key_exists($uname,$db_relations)){
+                	$lfn = $db_relations[$uname]->getLocalFieldName();
+                	if (isset($db_columns[$lfn]))
+                		$col = $db_columns[$lfn];
+                	else
+                		$col = array();
+                    $this->addDBRelation($uname,$db_relations[$uname],$col);
+                }
             }
         }
     }
@@ -122,9 +128,7 @@ class IPF_Form_Model extends IPF_Form
                 $rels = $this->model->getTable()->getRelations();
 
                 foreach($rels as $rname=>$rel){
-                    //print "$rname<br>";
                     if (isset($this->cleaned_data[$rname])){
-                        //print $rel->getAlias();
                         $this->model->unlink($rel->getAlias());
                         if (is_array($this->cleaned_data[$rname])){
                             $this->model->link($rel->getAlias(),$this->cleaned_data[$rname]);
-- 
2.49.0