observer to change status after invoicing

Question

I would like to know what is the correct method for change status of order when i create the invoice. I created an observer on the basis of what I saw on the internet :

class statutafterinvoice implements ObserverInterface{


/**
 * Message manager
 *
 * @var \Magento\Framework\Message\ManagerInterface
 */
protected $messageManager;

/**
 * Constructor
 *
 * @param  \Magento\Framework\Message\ManagerInterface $messageManager Message Manager
 *
 * @return void
 */
public function __construct(      
) {
    //$this->messageManager = $messageManager;
}

/**
 * Display a custom message when customer log in
 *
 * @param  \Magento\Framework\Event\Observer $observer Observer
 *
 * @return void
 */
public function execute(\Magento\Framework\Event\Observer $observer)
{
    $methode = $observer->getEvent()->getInvoice()->getOrder()->getPayment()->getMethodInstance()->getCode();
    if($methode=="xxx_bvr"){
        $observer->getEvent()->getInvoice()->getOrder()->setStatus('attente_paiement', true);   

    }
}

}

and here is my events.xml :

<?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="sales_order_invoice_save_after">
       <observer name="bvr_statut_after_invoice" instance="Acme\BVR\Observer\statutafterinvoice"/>
       </event>
</config>

this code dont't work.

do you know the solution for change the status when i invoice the order? i thank you very much

Answer 1

Order states.

After order has been placed, it gets New state. At that point, you can Hold it, Ship it, Invoice it or Cancel it, thereby assigning your order Hold, Processing, Processing, or Cancelled state, respectively. Once you ship and invoice, your order receives Completed state.

Now, each of these states can have a separate status, that you can define yourself if System -> Order statuses. In your case, if you want the order to say Dispatched, after you are finished shipping and invoicing, you would add Dispatched order status and assign it to Complete order state. Same goes for any other order states.

Option 1: Normally when an invoice is created (and no shipment is created) it sets the state to processing and the status to the default status (or some other status if that is set in the payment method).

Option 2: If the shipment is already created or if we are talking about virtual products (gift cards or downloadable products or other virtual products) the state switches to complete and the status to de selected default status (by default also complete).

Link ref :- How to define the order status after creating an invoice