dblayeroo: do not allow an array of array to be provided to displayAdd

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@3901 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

dblayeroo.php

@@ -1562,6 +1562,9 @@ class dblayeroo
       $this->displayColumn = array ();
     foreach ($columnNames as $nb => $display)
     {
+      if (! is_string ($display))
+        $this->DBException (
+          "displayAdd: The display column name #$nb is not a string");
       $display = $name = trim ($display);
       $pos = strpos ($display, "(");
       if ($pos !== false)