yii\web\Request::post PHP Method

    public function post($name = null, $defaultValue = null)
    {
        if ($name === null) {
            return $this->getBodyParams();
        } else {
            return $this->getBodyParam($name, $defaultValue);
        }
    }

 public function actionUpdate($id = 0)
 {
     //      $out = ['status' => 'err', 'error' => 'Unknown error'];
     if (\Yii::$app->user->isGuest) {
         throw new NotFoundHttpException();
     }
     $r = new Request();
     if (isset($r->post('Project')['id']) && $r->post('Project')['id']) {
         $id = $r->post('Project')['id'];
     }
     //      vd($r->post('Company'));
     $userID = \Yii::$app->user->getId();
     if ($id) {
         $project = Project::findOne(['id' => $id, 'user_id' => $userID]);
     } else {
         $project = new Project();
         //        \Yii::$app->session->setFlash('error', 'Company ID is required.');
         //        $this->redirect(array('view','id'=>$company));
         //        $this->redirect(array('index'));
         //        return;
     }
     //        vd($company);
     if ($project) {
         if ($project->load($r->post())) {
             $project->user_id = $userID;
             if ($project->validate() && $project->save()) {
                 //vd([$r->post(),$order->attributes]);
                 //          $out = [
                 //            'status' => 'ok',
                 //            'order' => $order->id,
                 //            'user' => $order->user_id,
                 //            'sum' => $order->price / 100,
                 //          ];
                 //          $this->redirect(array('view','id'=>$company));
             } else {
                 //          vd($company->errors);
                 \Yii::$app->session->setFlash('error', array_values($project->errors)[0][0]);
                 //          $out['error'] = array_values($order->errors)[0][0];
                 //vd($order->errors);
             }
         }
     } else {
         \Yii::$app->session->setFlash('error', 'Такой проект не существует');
         $this->redirect(array('my'));
         return;
     }
     return $this->render('update', ['project' => $project]);
     //      \Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
     //      return $out;
     /*vd(['get' => $r->getQueryParams() ,
       'post' => $r->post(),
       'order' => $order],1); //*/
 }