skeeks\cms\controllers\ModelPropertiesController::actionSubmit PHP Method

    public function actionSubmit()
    {
        if (\Yii::$app->request->isAjax && !\Yii::$app->request->isPjax) {
            \Yii::$app->response->format = Response::FORMAT_JSON;
            $response = ['success' => false, 'message' => 'Произошла ошибка'];
            if (\Yii::$app->request->post('sx-model') && \Yii::$app->request->post('sx-model-value')) {
                $modelClass = \Yii::$app->request->post('sx-model');
                $modelValue = \Yii::$app->request->post('sx-model-value');
                /**
                 * @var RelatedElementModel $modelForm
                 */
                $modelForm = $modelClass::find()->where(['id' => $modelValue])->one();
                if (method_exists($modelForm, "createPropertiesValidateModel")) {
                    $validateModel = $modelForm->createPropertiesValidateModel();
                } else {
                    $validateModel = $modelForm->getRelatedPropertiesModel();
                }
                if ($validateModel->load(\Yii::$app->request->post()) && $validateModel->validate()) {
                    $validateModel->save();
                    $response['success'] = true;
                    $response['message'] = 'Успешно отправлена';
                } else {
                    $response['message'] = 'Форма заполнена неправильно';
                }
                return $response;
            }
        }
    }