symphonycms / symphony-2

                    return self::__OK__;

                }

                if (!General::validateString($data, $this->get('validator'))) {

                    $message = __("'%s' contains invalid data. Please check the contents.", array($this->get('label')));

                    return self::__INVALID_FIELDS__;

                }

            }

            if ($this->get('validator') !== null) {

                $rule = $this->get('validator');

                if (General::validateString($file, $rule) === false) {

                    $message = __('File chosen in ‘%s’ does not match allowable file types for that field.', array(

                        $this->get('label')

                    ));

                    return self::__INVALID_FIELDS__;

                }

            }

            // If the developer did not specified any validator, check for the

            // blacklisted file types instead

            else {

                $blacklist = Symphony::Configuration()->get('upload_blacklist', 'admin');

                if (!empty($blacklist) && General::validateString($file, $blacklist)) {

                    $message = __('File chosen in ‘%s’ is blacklisted for that field.', array(

                        $this->get('label')

                    ));

                    return self::__INVALID_FIELDS__;

                }

            }

            return self::__OK__;