diff --git a/dev/skeletons/modMyModule.class.php b/dev/skeletons/modMyModule.class.php
index e7b3e95e757..60bc466a907 100644
--- a/dev/skeletons/modMyModule.class.php
+++ b/dev/skeletons/modMyModule.class.php
@@ -78,6 +78,7 @@ class modMyModule extends DolibarrModules
 		//							'substitutions' => 0,                            // Set this to 1 if module has its own substitution function file
 		//							'menus' => 0,                                    // Set this to 1 if module has its own menus handler directory
 		//							'barcode' => 0,                                  // Set this to 1 if module has its own barcode directory
+		//							'models' => 0,                                   // Set this to 1 if module has its own models directory
 		//							'css' => '/mymodule/css/mymodule.css.php',       // Set this to relative path of css if module has its own css file
 		//							'hooks' => array('hookcontext1','hookcontext2')  // Set here all hooks context managed by module
 		//                        );
diff --git a/htdocs/admin/commande.php b/htdocs/admin/commande.php
index 7f41578058c..0836989d66f 100644
--- a/htdocs/admin/commande.php
+++ b/htdocs/admin/commande.php
@@ -38,8 +38,8 @@ $langs->load("errors");
 
 if (! $user->admin) accessforbidden();
 
-$action = GETPOST("action");
-$value = GETPOST("value");
+$action = GETPOST('action','alpha');
+$value = GETPOST('value','alpha');
 
 /*
  * Actions
@@ -242,6 +242,11 @@ print "</tr>\n";
 
 clearstatcache();
 
+// Check if there is external models to do asked by plugins
+if (is_array($conf->models_modules) && ! empty($conf->models_modules)) {
+	$conf->file->dol_document_root = array_merge($conf->file->dol_document_root,$conf->models_modules);
+}
+
 foreach ($conf->file->dol_document_root as $dirroot)
 {
 	$dir = $dirroot . "/core/modules/commande/";
@@ -373,6 +378,11 @@ print "</tr>\n";
 
 clearstatcache();
 
+// Check if there is external models to do asked by plugins
+if (is_array($conf->models_modules) && ! empty($conf->models_modules)) {
+	$conf->file->dol_document_root = array_merge($conf->file->dol_document_root,$conf->models_modules);
+}
+
 $var=true;
 foreach ($conf->file->dol_document_root as $dirroot)
 {
diff --git a/htdocs/admin/facture.php b/htdocs/admin/facture.php
index bd145f32ae4..fa4e2f6e0d4 100644
--- a/htdocs/admin/facture.php
+++ b/htdocs/admin/facture.php
@@ -2,7 +2,7 @@
 /* Copyright (C) 2003-2004	Rodolphe Quiedeville		<rodolphe@quiedeville.org>
  * Copyright (C) 2004-2011	Laurent Destailleur			<eldy@users.sourceforge.net>
  * Copyright (C) 2005		Eric Seigne					<eric.seigne@ryxeo.com>
- * Copyright (C) 2005-2011	Regis Houssin				<regis@dolibarr.fr>
+ * Copyright (C) 2005-2012	Regis Houssin				<regis@dolibarr.fr>
  * Copyright (C) 2008		Raphael Bertrand (Resultic)	<raphael.bertrand@resultic.fr>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -34,8 +34,8 @@ $langs->load("errors");
 
 if (! $user->admin) accessforbidden();
 
-$action = GETPOST("action");
-$value = GETPOST("value");
+$action = GETPOST('action','alpha');
+$value = GETPOST('value','alpha');
 
 
 /*
@@ -308,6 +308,11 @@ print '</tr>'."\n";
 
 clearstatcache();
 
+// Check if there is external models to do asked by plugins
+if (is_array($conf->models_modules) && ! empty($conf->models_modules)) {
+	$conf->file->dol_document_root = array_merge($conf->file->dol_document_root,$conf->models_modules);
+}
+
 $var=true;
 foreach ($conf->file->dol_document_root as $dirroot)
 {
@@ -473,6 +478,11 @@ print "</tr>\n";
 
 clearstatcache();
 
+// Check if there is external models to do asked by plugins
+if (is_array($conf->models_modules) && ! empty($conf->models_modules)) {
+	$conf->file->dol_document_root = array_merge($conf->file->dol_document_root,$conf->models_modules);
+}
+
 $var=true;
 foreach ($conf->file->dol_document_root as $dirroot)
 {
diff --git a/htdocs/admin/propale.php b/htdocs/admin/propale.php
index 1689a406f88..2e2e15d398e 100644
--- a/htdocs/admin/propale.php
+++ b/htdocs/admin/propale.php
@@ -4,7 +4,7 @@
  * Copyright (C) 2004      Sebastien Di Cintio         <sdicintio@ressource-toi.org>
  * Copyright (C) 2004      Benoit Mortier              <benoit.mortier@opensides.be>
  * Copyright (C) 2004      Eric Seigne                 <eric.seigne@ryxeo.com>
- * Copyright (C) 2005-2011 Regis Houssin               <regis@dolibarr.fr>
+ * Copyright (C) 2005-2012 Regis Houssin               <regis@dolibarr.fr>
  * Copyright (C) 2008      Raphael Bertrand (Resultic) <raphael.bertrand@resultic.fr>
  * Copyright (C) 2011-2012 Juanjo Menent			   <jmenent@2byte.es>
  *
@@ -35,11 +35,10 @@ require_once(DOL_DOCUMENT_ROOT."/comm/propal/class/propal.class.php");
 $langs->load("admin");
 $langs->load("errors");
 
-if (!$user->admin)
-accessforbidden();
+if (! $user->admin) accessforbidden();
 
-$action =GETPOST("action");
-$value = GETPOST("value");
+$action =GETPOST('action','alpha');
+$value = GETPOST('value','alpha');
 
 /*
  * Actions
@@ -186,7 +185,8 @@ if ($action == 'set')
     $sql.= ")";
 	$resql=$db->query($sql);
 }
-if ($action == 'del')
+
+else if ($action == 'del')
 {
 	$type='propal';
 	$sql = "DELETE FROM ".MAIN_DB_PREFIX."document_model";
@@ -199,7 +199,7 @@ if ($action == 'del')
 	}
 }
 
-if ($action == 'setdoc')
+else if ($action == 'setdoc')
 {
 	$label = GETPOST("label");
 	$scandir = GETPOST("scandir");
@@ -235,7 +235,7 @@ if ($action == 'setdoc')
 	}
 }
 
-if ($action == 'setmod')
+else if ($action == 'setmod')
 {
 	// TODO Verifier si module numerotation choisi peut etre active
 	// par appel methode canBeActivated
@@ -274,6 +274,11 @@ print '</tr>'."\n";
 
 clearstatcache();
 
+// Check if there is external models to do asked by plugins
+if (is_array($conf->models_modules) && ! empty($conf->models_modules)) {
+	$conf->file->dol_document_root = array_merge($conf->file->dol_document_root,$conf->models_modules);
+}
+
 foreach ($conf->file->dol_document_root as $dirroot)
 {
 	$dir = $dirroot . "/core/modules/propale/";
@@ -405,6 +410,11 @@ print "</tr>\n";
 
 clearstatcache();
 
+// Check if there is external models to do asked by plugins
+if (is_array($conf->models_modules) && ! empty($conf->models_modules)) {
+	$conf->file->dol_document_root = array_merge($conf->file->dol_document_root,$conf->models_modules);
+}
+
 $var=true;
 foreach ($conf->file->dol_document_root as $dirroot)
 {
diff --git a/htdocs/core/class/conf.class.php b/htdocs/core/class/conf.class.php
index 84b49901ce8..f8e698e09fb 100644
--- a/htdocs/core/class/conf.class.php
+++ b/htdocs/core/class/conf.class.php
@@ -58,6 +58,7 @@ class Conf
 	public $triggers_modules		= array();
 	public $menus_modules			= array();
 	public $hooks_modules			= array();
+	public $models_modules			= array();
 	public $login_modules			= array();
 	public $sms_engine_modules		= array();
 	public $barcode_modules			= array();
@@ -163,6 +164,7 @@ class Conf
 							if (! is_array($this->$varname)) { $this->$varname = array(); }
 							$arrValue = @unserialize($value);
 							if (is_array($arrValue) && ! empty($arrValue)) $value = $arrValue;
+							else if ($partname == 'models' && $value == 1) $value = dol_buildpath('/'.$modulename);
 							else $value = ($value == 1 ? '/'.$modulename.'/core/'.$partname.'/' : $value);
 							$this->$varname = array_merge($this->$varname, array($modulename => $value));
 						}