FIX #4281

htdocs/product/list.php

@@ -67,6 +67,7 @@ if (! $sortorder) $sortorder="ASC";
 
 $limit = $conf->liste_limit;
 
+if (empty($action)) $action='list';
 
 // Get object canvas (By default, this is not defined, so standard usage of dolibarr)
 $canvas=GETPOST("canvas");
@@ -108,8 +109,8 @@ $form=new Form($db);
 
 if (is_object($objcanvas) && $objcanvas->displayCanvasExists($action))
 {
-	$objcanvas->assign_values('list');       // This must contains code to load data (must call LoadListDatas($limit, $offset, $sortfield, $sortorder))
-    $objcanvas->display_canvas('list');  	 // This is code to show template
+	$objcanvas->assign_values($action);       // This must contains code to load data (must call LoadListDatas($limit, $offset, $sortfield, $sortorder))
+    $objcanvas->display_canvas($action);  	  // This is code to show template
 }
 else
 {