Fix recursion error for checkout order route

[sneakyvv]

Summary

In the FrontendProxyController::checkoutOrder() the whole order entity is being put in a JsonResponse. If that order has bidirectional associations (for example transactions which also have a reference back to the order, and thus back to the transactions and back to the order etc...) then the JsonResponse object will throw an error: "Recursion detected"

Tested scenarios

Just load an order with some bidirectional associations in some subscriber that's triggered on checkout.

Fixed issue: No issue has been made

Solution

The JS success callback that uses the checkout route response only used the id, so no need to send the whole entity. Just send the id, and that's it.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[candemiralp]

Hello @sneakyvv,

Thank you for your contribution. We will merge this PR after reviewing it.

Best regards,
Can