/**
* Entity builder: populates the line item title from the purchased entity.
*
* @param string $entity_type
* The entity type identifier.
* @param \Drupal\commerce_order\Entity\LineItemInterface $line_item
* The line item.
* @param array $form
* The complete form array.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The current state of the form.
*/
public static function populateTitle($entity_type, LineItemInterface $line_item, array $form, FormStateInterface $form_state)
{
$purchased_entity = $line_item->getPurchasedEntity();
if ($line_item->isNew() && $purchased_entity) {
$line_item->setTitle($purchased_entity->getLineItemTitle());
}
}
/**
* {@inheritdoc}
*/
public function matchAll(LineItemInterface $line_item, array $line_items)
{
$purchased_entity = $line_item->getPurchasedEntity();
if (empty($purchased_entity)) {
// Don't support combining line items without a purchased entity.
return [];
}
$comparison_fields = ['type', 'purchased_entity'];
$event = new LineItemComparisonFieldsEvent($comparison_fields, $line_item);
$this->event_dispatcher->dispatch(CartEvents::LINE_ITEM_COMPARISON_FIELDS, $event);
$comparison_fields = $event->getComparisonFields();
$matched_line_items = [];
/** @var \Drupal\commerce_order\Entity\LineItemInterface $existing_line_item */
foreach ($line_items as $existing_line_item) {
foreach ($comparison_fields as $comparison_field) {
if (!$existing_line_item->hasField($comparison_field) || !$line_item->hasField($comparison_field)) {
// The field is missing on one of the line items.
continue 2;
}
if ($existing_line_item->get($comparison_field)->getValue() !== $line_item->get($comparison_field)->getValue()) {
// Line item doesn't match.
continue 2;
}
}
$matched_line_items[] = $existing_line_item;
}
return $matched_line_items;
}
/**
* {@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;
}
