OroCommerce give ability to user to generate multi coupons with many code dynamically ,  so the developer can use this system for generate coupons for example for custom user or specific cases.

The class CouponGenerator is responsible for that Oro\Bundle\PromotionBundle\CouponGeneration\Coupon\CouponGenerator and the function which generate and save is generateAndSave generateAndSave(CouponGenerationOptions $options) and accept as parameters use Oro\Bundle\PromotionBundle\CouponGeneration\Options\CouponGenerationOptions;

So let’s start by inject the  CouponGenerator with DI and using in any of your class ,

 
    ibnab_automatic_coupon.event_listener.myclass:
        class: Ibnab\Bundle\AutomaticCouponBundle\Helper\MyClass
        arguments:
            - '@oro_promotion.coupon_generation.coupon'
 

And

 
<?php
namespace Ibnab\Bundle\AutomaticCouponBundle\Helper;
use Oro\Bundle\PromotionBundle\CouponGeneration\Coupon\CouponGenerator;
use Oro\Bundle\PromotionBundle\CouponGeneration\\Options\CouponGenerationOptions;
class MyClass
{       
    /** @var CouponGenerator */
    protected $couponGenerator;
    /**
     * @param CouponGenerator  $couponGenerator
     *      
     */
    public function __construct(CouponGenerator $couponGenerator)
    {
        $this->couponGenerator = $couponGenerator;
    }
}
 

Let’s start by creating options for this coupon generator 

 
  $couponQty = 10;
  $couponGenerationOptions = new CouponGenerationOptions();
  $couponGenerationOptions->setCouponQuantity($couponQty);
  $couponGenerationOptions->setPromotion($promotion);
  $couponGenerationOptions->setValidFrom((new \DateTime()));
  $couponGenerationOptions->setValidUntil((new \DateTime())->modify('+1 months'));
  $couponGenerationOptions->setOwner($this->getFirstUserBusinessUnit());
  $couponGenerationOptions->setDashesSequence(2);
 

About:

 
  $couponGenerationOptions->setPromotion($promotion);
 

The coupons should related to specific promotion created by user or programmatically let’s trying  load one by id should inject :
- '@oro_entity.doctrine_helper'

 
    public function __construct(DoctrineHelper $doctrineHelper,
    CouponGenerator $couponGenerator)
    {
        $this->doctrineHelper = $doctrineHelper;
        $this->couponGenerator = $couponGenerator;
    } 
 

So now load promotion:

 
$promotionRepository = $this->doctrineHelper->getEntityRepository(‘Oro\\Bundle\\PromotionBundle\\Entity\\Promotion’);
$promotion = $promotionRepository->find(1);
 

you have now your promotion instance , what’s about :

 
 $couponGenerationOptions->setOwner($this->getFirstUserBusinessUnit());
 

let’s add a function to manage owner by get the first Business Unit:

 
    /**
     * @return BusinessUnit
     * @throws \LogicException
     */
    protected function getFirstUserBusinessUnit()
    {
        $users = $this->doctrineHelper->getEntityRepository('Oro\\Bundle\\UserBundle\\Entity\\User')->findBy([], ['id' => 'ASC'], 1);
       if (!$users) {
            throw new \LogicException('There are no users in system');
        }
        $user = reset($users);
        $businessUnits = $user->getBusinessUnits();
        if (!$businessUnits) {
            throw new \LogicException('Can\'t find Business Unit ');
        }
        return isset($businessUnits[0]) ? $businessUnits[0] : null;
    }
 

Done is the time to generate and save you coupons by :

 
$this->couponGenerator->generateAndSave($couponGenerationOptions);
 

So the system well add 10 coupon with different code linked to promotion with id 1.