问如何将变量从模型访问到控制器？

EN

public static function saveAll($inputs){
    $coutner = 0;
    $arr_status = [];

    foreach ($inputs as $input) {
        $s = new Installations;
        foreach ((array)$input as $key => $value) {
            if($key != 'image_names') {
                if ($s->hasAttribute($key)) {
                    $s->$key = $value;

                }
            }
        }



        $user = Yii::$app->user;

        if (isset($input->auth_key) && Users::find()->where(['auth_key' => $input->auth_key])->exists()) {
            $user = Users::find()->where(['auth_key' => $input->auth_key])->one();
        }


        $s->created_by = $user->id;

        if (Installations::find()->where(['ref_no' => $input->ref_no])->exists()) {
            $arr_status[] = ['install_id' => $input->install_id, 'status' => 2, 'messages' => "Ref # Already exists"];
            continue;
        }
        $s->sync_date = date('Y-m-d H:i:s  ');

        if($s->save()){

            if ($s->istallation_status == 'Installed') {

                Meters::change_status_byinstall($s->meter_msn, Meters::$status_titles[4]);
            }
            else if ($s->istallation_status != 'Installed' && $s->comm_status =='Failed')
            {
                Meters::change_status_byinstall($s->meter_msn, Meters::$status_titles[5]);
            }
            $arr_status[] = ['install_id' => $input->install_id, 'status' => 1];
            $coutner++;

            if (isset($input->doc_images_name)) {
                foreach ($input->doc_images_name as $img) {
                    $image = new InstallationImages;
                    $image->image_name = $img->image_name;
                    $image->installation_id = $s->id;
                    $image->save();
                }
            }
            if (isset($input->site_images_name)) {
                foreach ($input->site_images_name as $img2) {
                    $image2 = new InstallationImagesSite;
                    $image2->image_name = $img2->image_name;
                    $image2->installation_id = $s->id;
                    $image2->save();
                }
            }
        }else{
            $arr_status[] = ['install_id' => $input->install_id, 'status' => 0, 'messages' => $s->errors];
        }
        $status = $s->istallation_status;
        $msn = $s->meter_msn;
        $com = $s->comm_status;
        // want to pass these variables to the controller function

    }

    return ['status' => 'OK', 'details' => $arr_status, 'records_saved' => $coutner];

}

public function actionAddnew()
{
    $fp = fopen('debugeeeeeee.txt', 'w+');
    fwrite($fp, file_get_contents('php://input'));
    fclose($fp);
    $inputs = json_decode(file_get_contents('php://input'));

    return Installations::saveAll($inputs);
}

 public function actionSavephoto()
{


    try {
        $count = 0;
        foreach ($_FILES as $f) {
            $dd = pathinfo($f['name']);
            if (!isset($dd['extension']) || !in_array($dd['extension'], array('jpg', 'png', 'gif'))) {
                return ['status' => 'ERROR', 'uploaded_files' => $count, 'message' => 'Invalid File'];
                break;
            }
            if (move_uploaded_file($f['tmp_name'], Installations::UPLOAD_FOLDER . $f['name'])) {
                $count++;

                return ['status' => 'OK', 'uploaded_files' => $count];

                break;
            } else {
                return ['status' => 'ERROR', 'uploaded_files' => $count];
                break;
            }
        }

    } catch (Exception $x) {
        return ['status' => 'ERROR', 'message' => $x->getMessage()];
    }
}