cakephp 3會話變量在其他函數中空

Question

我試圖訪問會話拋出不同的控制器或在一個控制器中的不同功能，但當我嘗試從不同的功能訪問值，變量爲NULL 我讀了一些文件（包括cakephp session cookbook）和更多，但我不明白如何配置會話之前使用它。

我有一個控制器的問題，即時通訊嘗試使用會話，但價值爲零後即時通訊寫入另一個功能！？我的另一個問題是我如何避免寫$ this-> request-> session（）;在我想要使用會話的每個函數中。 CODE：

<?php 
namespace App\Controller; 

use App\Controller\AppController; 
use App\Model\Entity\Answer; 
use Cake\ORM\TableRegistry; 


class ComlibsController extends AppController { 

    public function index() { 

    } 

    public function getResult(){ 

    $this->viewBuilder()->layout('comlib'); //change the layout from default 
     $live_req = $this->request->data['searchBox']; // get the question 

     $session->write('comlib/question' , $live_req); 
      $query = $this->Comlibs->LFA($live_req); // get the first answer 
      $shown_answerID = array($query[0]['answers'][0]['id'], '2'); 
    $this->Session->write(['avoidedID' => $shown_answerID]); //avoid the answer that user saw to repeat agian 

       $this->set('question',$query[0]['question']); // does work 

     //get the answers result 
     //and send the array to the 
          $fields = array('id','answer','rate' , 'view' , 'helpful'); 
          for ($i = 0 ; $i <= 6 ; $i++) { 

           $this->set('id'.$i,$query[0]['answers'][$i][$fields[0]]); 
           $this->set('answer'.$i,$query[0]['answers'][$i][$fields[1]]); 
           $this->set('rate'.$i,$query[0]['answers'][$i][$fields[2]]); 
           $this->set('view'.$i,$query[0]['answers'][$i][$fields[3]]); 
           $this->set('helpful'.$i,$query[0]['answers'][$i][$fields[4]]); 


          }  

    } 
    public function moveon() { 

    $this->render('getResult'); 
     $this->viewBuilder()->layout('comlib'); 
    echo $question = $session->read('comlib/question'); // empty value echo 

    $avoidedIDs = $session->read('avoidedID'); 
    var_dump($avoidedIDs); // returns NULL WHY ? 
     $theid = $this->request->here; 
     $query = $this->Comlibs->LFM($theid,$avoidedIDs,$question); 

      echo 'imcoming'; 
    } 
} 

感謝Adnvanced

Answer 1

您可以使用這些代碼爲write和read會話數據：

$this->request->session()->write($name, $value); $this->request->session()->read($name);

請閱讀本section CakePHP中的書。

Answer 2

嘗試

$this->session()->write('avoidedID', $shown_answerID); 

代替

$this->session()->write(['avoidedID' => $shown_answerID]); 

並嘗試

$avoidedIDs = $this->session()->read('avoidedID'); 

，而不是

$avoidedIDs = $session->read('avoidedID');