/**
* Handles requests to update a cart item.
*
* @param $nid
* Node id of the cart item.
* @param $data
* Array of extra information about the item.
* @param $qty
* The quantity of this item in the cart.
* @param $cid
* The cart id. Defaults to NULL, which indicates that the current user's cart
* should be retrieved with uc_cart_get_id().
*/
function hook_uc_update_cart_item($nid, $data = array(), $qty, $cid = NULL)
{
$cid = !(is_null($cid) || empty($cid)) ? $cid : uc_cart_get_id();
$result = \Drupal::entityQuery('uc_cart_item')->condition('cart_id', $cid)->condition('nid', $nid)->condition('data', serialize($data))->execute();
if (!empty($result)) {
$item = \Drupal\uc_cart\Entity\CartItem::load(current(array_keys($result)));
if ($item->qty->value != $qty) {
$item->qty->value = $qty;
$item->save();
}
}
}
/**
* {@inheritdoc}
*/
public function addItem($nid, $qty = 1, $data = NULL, $msg = TRUE)
{
$node = Node::load($nid);
if (is_null($data) || !isset($data['module'])) {
$data['module'] = 'uc_product';
}
// Invoke hook_uc_add_to_cart() to give other modules a chance to affect the process.
$result = \Drupal::moduleHandler()->invokeAll('uc_add_to_cart', array($nid, $qty, $data));
if (is_array($result) && !empty($result)) {
foreach ($result as $row) {
if ($row['success'] === FALSE) {
// Module implementing the hook does NOT want this item added!
if (isset($row['message']) && !empty($row['message'])) {
$message = $row['message'];
} else {
$message = t('Sorry, that item is not available for purchase at this time.');
}
if (isset($row['silent']) && $row['silent'] === TRUE) {
return $this->getAddItemRedirect();
} else {
drupal_set_message($message, 'error');
}
// Stay on this page.
$query = \Drupal::request()->query;
return Url::fromRoute('<current>', [], ['query' => UrlHelper::filterQueryParameters($query->all())]);
}
}
}
// Now we can go ahead and add the item because either:
// 1) No modules implemented hook_uc_add_to_cart(), or
// 2) All modules implementing that hook want this item added.
$result = \Drupal::entityQuery('uc_cart_item')->condition('cart_id', $this->id)->condition('nid', $nid)->condition('data', serialize($data))->execute();
if (empty($result)) {
// If the item isn't in the cart yet, add it.
$item_entity = CartItem::create(array('cart_id' => $this->id, 'nid' => $nid, 'qty' => $qty, 'data' => $data));
$item_entity->save();
if ($msg) {
drupal_set_message(t('<strong>@product-title</strong> added to <a href=":url">your shopping cart</a>.', ['@product-title' => $node->label(), ':url' => Url::fromRoute('uc_cart.cart')->toString()]));
}
} else {
// If it is in the cart, update the item instead.
if ($msg) {
drupal_set_message(t('Your item(s) have been updated.'));
}
$item_entity = CartItem::load(current(array_keys($result)));
$qty += $item_entity->qty->value;
\Drupal::moduleHandler()->invoke($data['module'], 'uc_update_cart_item', array($nid, $data, min($qty, 999999), $this->id));
}
// Invalidate the cache.
Cache::invalidateTags(['uc_cart:' . $this->id]);
// Invalidate the cart order.
// @todo Remove this and cache the order object with a tag instead?
$session = \Drupal::service('session');
$session->set('uc_cart_order_rebuild', TRUE);
return $this->getAddItemRedirect();
}