How to get the userid of the user that placed an order inside Magento admin panel?

Question

We are rewarding our admin users by how many orders the help customers with per day. So we would need to track which admins placed which orders, I think the easiest way would be to add admin userid into sales flat order table on magento.

Answer 1

You can do this by creating an Event-Observer type module on the sales_order_save_after event, just make sure you enclose it in the <adminhtml> node instead of <global>, otherwise customers placing orders on the front-end of your website could trigger the observer function.

In Observer.php you can relate the two by:

1. Calling $observer->getEvent()->getOrder()->getId(); //this fetches the entity_id value from the sales_flat_order table
2. Relating it to Mage::getSingleton('admin/session')->getUser()->getUserId(); //this fetches the user_id value from the admin_user table

Alternately, it does look like there is a module already available on MagentoConnect:

Administrator Who Placed The Order

It is a paid-for extension though, implementing the Event-Observer method seems simple enough.