On CartAddResource endpoint on order item create price is not resolved through chain price resolver before order item is added to cart order.
This causes 'CurrencyMismatchException' and 'EntityStorageException' > 'Drupal\Core\Entity\EntityStorageException: Update existing 'commerce_order' entity while changing the ID is not supported. in Drupal\Core\Entity\ContentEntityStorageBase->doPreSave() (line 706 of /var/www/html/web/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php).' on cart order creation if we have multi-currency site and we use
Commerce Currency Resolver →
module for price resolve, e.g. if price is resolved via IP.
Install and configure commerce_currency_resolver module
Switch to not default currency (e.g. if default currency is USD and you use IP-Country for currency resolve > switch IP to some country that uses e.g. EUR currency)
Add item to cart > in CartAddResource->process() order item will be created form PurchasableEntity with unit price that will be resolved as default site currency > on
$order_item = $this->cartManager->addOrderItem($cart, $order_item, $meta['combine'] ?? TRUE); in cartManager cart order will be saved and will trigger Drupal\commerce_currency_resolver\CurrencyOrderProcessor() that will try to resolve price and re save cart order causing 'EntityStorageException' > 'Drupal\Core\Entity\EntityStorageException: Update existing 'commerce_order' entity while changing the ID is not supported. in Drupal\Core\Entity\ContentEntityStorageBase->doPreSave() (line 706 of /var/www/html/web/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php).'
As order item unit price is populated and resolved via chainPriceResolver on commerce addToCartForm->buildEntity(), do so on CartAddResource->proccess() to avoid unnecessary order total price resolving on Drupal\commerce_currency_resolver\CurrencyOrderProcessor().
Fixed
1.0
Code
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Issue #3214148 by agolubic, guedressel, jsacksick: Populate and resolve...
Automatically closed - issue fixed for 2 weeks with no activity.