public static function VerifyFieldName(&$fieldName, XenForo_DataWriter $dw, $inputName = false) { if (preg_match('/[^a-zA-Z0-9_]/', $fieldName)) { $dw->error(new XenForo_Phrase('please_enter_an_id_using_only_alphanumeric'), $inputName); return false; } if ($fieldName !== $dw->getExisting('field_name')) { $fieldModel = XenForo_Model::create('LiquidPro_SimpleForms_Model_Field'); if (in_array($dw->get('type'), array('global', 'template'))) { $existingField = $fieldModel->getFieldByTypeAndName($dw->get('type'), $fieldName); } else { $existingField = $fieldModel->getFieldByFormIdAndName($dw->get('form_id'), $fieldName); } } if (isset($existingField) && $existingField) { $dw->error(new XenForo_Phrase('field_ids_must_be_unique'), $inputName); return false; } return true; }