how to store value in session using Magento 2

[rababfzepcc1fc]

I want to access observer.php class value into another observer.php class. How can I access one observer class data into another observer class?

[Bhanu Periwal]

Hi @rababfzepcc1fc 

To set and get value from session, you can take reference from below code:

public function __construct(
        \Magento\Framework\Session\SessionManagerInterface $session,
        ...
    ){
        $this->session = $session;
        ...
    }
 
    public function setValue($value){
        $this->session->start();
        $this->session->setMessage($value);
     }
 
    public function getValue(){
        $this->session->start();
        return $this->session->getMessage();
    }
 
    public function unSetValue(){
        $this->session->start();
        return $this->session->unsMessage();
    }

If issue resolve, please click on 'Kudos' & Accept as Solution!

[gaurav_harsh1]

Hi @rababfzepcc1fc 

For using a value from one observer to another observer class, you must pass the variable in dispatch function in both the events if values are being passed from the controller

$this->_eventManager->dispatch('desired_event_for_dispatch', ['value' => "YOUR VALUE"]);

and inject the needful classes in both observer(s) constructor.

For storing values in session :

• Inject session manager Interface into your observer
  
  

  public function __construct(
          \Magento\Framework\Session\SessionManagerInterface $sessionObj,
      ){
          $this->sessionObj = $sessionObj;
      }

• To set, unset and unset values from session, use below methods
  
  

      public function setValue($value){
          $this->sessionObj->start();
          $this->sessionObj->setVariable($value);
       }
   
      public function getValue(){
          $this->sessionObj->start();
          return $this->sessionObj->getVariable();
      }
  
      public function unSetValue(){
          $this->sessionObj->start();
          return $this->sessionObj->unsVariable();
      }

NOTE : Don't pass sensitive values in session

Please click on 'Kudos' & Accept as Solution if this helped to resolve your issue!