$form->addInput(array('type'=>'submit','name'=>'btn_save','value'=>$i18n->getKey('button.save')));
}
-if ($request->getMethod() == 'POST') {
+if ($request->isPost()) {
$cl_name = trim($request->getParameter('name'));
$cl_type = $request->getParameter('type');
$cl_required = $request->getParameter('required');