/** * {@inheritdoc} */ public function addLineItem(OrderInterface $cart, LineItemInterface $line_item, $combine = TRUE, $save_cart = TRUE) { $purchased_entity = $line_item->getPurchasedEntity(); $quantity = $line_item->getQuantity(); $matching_line_item = NULL; if ($combine) { $matching_line_item = $this->lineItemMatcher->match($line_item, $cart->getLineItems()); } $needs_cart_save = FALSE; if ($matching_line_item) { $new_quantity = $matching_line_item->getQuantity() + $quantity; $matching_line_item->setQuantity($new_quantity); $matching_line_item->save(); } else { $line_item->save(); $cart->addLineItem($line_item); $needs_cart_save = TRUE; } $event = new CartEntityAddEvent($cart, $purchased_entity, $quantity, $line_item); $this->eventDispatcher->dispatch(CartEvents::CART_ENTITY_ADD, $event); if ($needs_cart_save && $save_cart) { $cart->save(); } return $line_item; }