Backend\Modules\Locale\Actions\Import::validateForm PHP Метод

    private function validateForm()
    {
        if ($this->frm->isSubmitted()) {
            $this->frm->cleanupFields();
            // redefine fields
            /** @var $fileFile \SpoonFormFile */
            $fileFile = $this->frm->getField('file');
            $chkOverwrite = $this->frm->getField('overwrite');
            // name checks
            if ($fileFile->isFilled(BL::err('FieldIsRequired'))) {
                // only xml files allowed
                if ($fileFile->isAllowedExtension(array('xml'), sprintf(BL::getError('ExtensionNotAllowed'), 'xml'))) {
                    // load xml
                    $xml = @simplexml_load_file($fileFile->getTempFileName());
                    // invalid xml
                    if ($xml === false) {
                        $fileFile->addError(BL::getError('InvalidXML'));
                    }
                }
            }
            if ($this->frm->isCorrect()) {
                // import
                $statistics = BackendLocaleModel::importXML($xml, $chkOverwrite->getValue());
                // trigger event
                BackendModel::triggerEvent($this->getModule(), 'after_import', array('statistics' => $statistics));
                // everything is imported, so redirect to the overview
                $this->redirect(BackendModel::createURLForAction('Index') . '&report=imported&var=' . ($statistics['imported'] . '/' . $statistics['total']) . $this->filterQuery);
            }
        }
    }